年第 36 卷 现代电子技术 构更加简单 且张口处没有波纹壁的厚度 可以实现更 络 在此给出几种具有周期结构馈源阵排布方式的模式 小的间距组阵 有利于改善交叠电平 和对应的激励系数 如图 5 所示 以及各馈源阵模式对 应的初级方向图 如图 3 和图 6 所示 其中图 6 中方向图 为

Size: px
Start display at page:

Download "年第 36 卷 现代电子技术 构更加简单 且张口处没有波纹壁的厚度 可以实现更 络 在此给出几种具有周期结构馈源阵排布方式的模式 小的间距组阵 有利于改善交叠电平 和对应的激励系数 如图 5 所示 以及各馈源阵模式对 应的初级方向图 如图 3 和图 6 所示 其中图 6 中方向图 为"

Transcription

1 2013 年 5 月 1 日 第 36 卷第 9 期 May 2013 Vol. 36 No. 9 现代电子技术 Modern Electronics Technique 57 周期结构馈源阵对多波束天线性能的影响 时政欣 曹多礼 中国空间技术研究院 西安分院 陕西 西安 摘 要 具有周期结构的馈源阵能够最大化实现馈源的共用 并且能够用相干耦合周期结构 波束形成网络 CORPS BFN 实现 通过设计一种双模圆锥喇叭 按照一定规律进行排布组成馈源阵 结合 CORPS BFN 设计思想 得出各馈源阵中 每个喇叭的激励系数并进行仿真分析 从而得出与单个馈源相比 周期结构馈源阵能够降低多波束天线副瓣电平的结论 关键词 周期结构 馈源阵 多波束天线 副瓣电平 中图分类号 TN82 34 文章编号 X 文献标识码 A Impact of feed source array with periodic structure on performance of multi beam antenna SHI Zheng xin CAO Duo li Xi an Branch China Academy of Space Technology Xi an China Abstract The feed source array with periodic structure can realize the maximization sharing of feed source and can be easily achieved by coherently coupling periodic structures beam forming network CORPS BFN. A dual mode conical horn was de signed and arrayed to form feed source array by a certain law. The excitation coefficient of each horn in the feed source array was got and simulated in combination with design concept of CORPS BFN. According to the detected results comparing with sin gle feed source the feed source array with periodic structure can lower the side lobe level of multi beam antenna Keywords periodic structure feed source array multi beam antenna side lobe level 0 引 基 于 相 干 耦 合 周 期 结 构 的 波 束 形 成 网 络 [5] CORPS 言 自 20 世纪 70 年代发射的国际通信卫星首次采用多 [1] BFN 提供了一种简单的波束形成网络设计思想 其效 果呈现了产生与所需地区相符合独立小辐射区域的使 波束天线 以来 星载多波束天线技术得到迅速发展和 用方式 并且能重新配置系统资源和重复利用 从而辐 广 泛 应 用 其 中 波 束 形 成 网 络 Beam Forming Net 射性能得到提高 网络的传统矩阵网络结构中 波束形成是基本馈源形成 源阵作为馈源 对多波束天线进行仿真 并分析其对天 法 每个波束都是由一个馈源形成的 所以不能满足波 线的方向性系数和副瓣电平等天线性能的影响 work BFN 是构成多波束天线的主要部件 波束形成 束交叠和副瓣要求 为了满足相邻波束之间的交叠性 能 需要相邻波束之间共享馈源 用 一簇 馈源形成一个 本文结合 CORPS BFN 设计思想 利用周期结构馈 1 波束 即采用增强型成束法 [2] 天线模型选取 由于反射面多波束卫星通信天线结构简单 质轻 周期结构在近几年得到许多学者的研究 其结构特 技术较为成熟 目前已经得到广泛应用 为避免馈源系 征和特殊的电磁性能促进了它的广泛应用 如频率选择 统遮挡 一般采用偏置单 双 反射面结构 本文选取该 表 面 FSS EBG 等 同 时 西 班 牙 UPNA Public Uni 天 线 形 式 并 且 取 反 射 器 口 径 为 mm 焦 距 比 为 [3] versity of Navarra 的 天 线 组 织 对 周 期 结 构 所 涉 及 的 领 [4] 域做了深入的研究 并提出了相干耦合周期结构 Co herently Radiating Periodic Structures CORPS 的概念及 其应用 其中应用之一是多波束天线的波束形成网络 收稿日期 偏移距离为 200 mm 如图 1 所示 其中 x a y a z a 为反射 面坐标系 x f y f z f 为馈源阵坐标系 2 馈源的选取 双模圆锥喇叭 [6] 在 5%~12%带宽内具有旋转性能好 的辐射方向图 与作为馈源最多的波纹喇叭相比 其结

2 年第 36 卷 现代电子技术 构更加简单 且张口处没有波纹壁的厚度 可以实现更 络 在此给出几种具有周期结构馈源阵排布方式的模式 小的间距组阵 有利于改善交叠电平 和对应的激励系数 如图 5 所示 以及各馈源阵模式对 应的初级方向图 如图 3 和图 6 所示 其中图 6 中方向图 为 E 面和 H 面 图1 天线系统几何图 图4 选 取 喇 叭 尺 寸 口 径 为1.3λ 经 设 计 优 化 得 喇 叭 口 馈源喇叭驻波比 径波导长度 L = 1.37λ 喇叭馈电段的波导半径为 0.37λ 工作在 Ka 频段的双模圆锥喇叭的模型如图 2 所示 其 辐射方向图和驻波比分别为图 3 和图 4 所示 图2 喇叭模型 3.2 图5 周期结构馈源阵各模式的排布方式及其激励系数 二次辐射分析 根据上述选取的天线模型和参数 并结合馈源阵各 模 式 排 布 和 激 励 系 数 利 用 Grasp 软 件 进 行 仿 真 得 到 图 各模式在焦点处次级方向图的方向性系数和副瓣电平 馈源喇叭辐射方向图 周期结构馈源阵的仿真 周期结构排布 根据文献[5] 本文结合 CORPS BFN 的设计思路 并 用一分二等功分器进行设计等相位输入输出的馈电网 数据 见表 1 从表 1 可以看出 各模式馈源阵次级方向图的方向 性系数均大于 41 db 其中菱形 2 2 和 3 3 模式大于单 个 喇 叭 的 值 而 菱 形 4 4 和 5 5 模 式 小 于 单 个 喇 叭 的 值 是由于有副瓣照射进反射面 由图 1 和图 6 可知 就 副 瓣 电 平 而 言 单 个 喇 叭 的 值 大 于 -20 db 其 他 均 小

3 第9期 59 时政欣 等 周期结构馈源阵对多波束天线性能的影响 于-20 db 其中菱形 3 3 和 4 4 模式的副瓣电平在-26 db 以下 可见馈源阵模式改善了单个馈源高副瓣的缺点 偏移量 N λ 其中 N = 0, 1,, 7 得到偏焦后的数据如图 8 所示 从图 8 可以看出 其结论与 x f 轴偏焦时的结论相 似 y f 轴偏焦时方向性系数均在 41.5 db 以上 其中菱形 2 2 和 3 3 模式最高 单个喇叭次之 菱形 5 5 最 低 y f 轴 偏 焦 时 副 瓣 电 平 单个喇叭的最差 较优的是菱形 4 4 模式 4 结 论 本 文 主 要 基 于 CORPS BFN 的设计思想 对馈源按照一定规 律性进行了具有周期结构的排 布 组 成 多 种 模 式 的 馈 源 阵 并 与单个馈源一起进行仿真与分 析 得到馈源阵对单个馈源副瓣 电平高的缺点较为明显的改善 在多波束天线设计时 还应 根据天线指标要求和实际情况 图6 表1 天线性能 各模式次级方向图的天线性能 单个喇叭 菱形 2 2 菱形 3 3 菱形 4 4 菱形 方向性系数 D /db 副瓣电平 SL /db 进行选取馈源阵列的排布模式 菱形 和 5 5 模式的初级方向图 当馈源组的喇叭数目增多时 通 过文献可知 网络的级联层数就随着增多 伴随着网络 的损耗就增加 横向偏焦分析 在馈源坐标系 x f y f z f 中 各模式的馈源阵在 x f 轴方向 上分别偏移整数倍个波长 进行偏焦仿真并分析天线的 性能结果 其中偏移量表示为 N λ N = 0, ±1,, ±7 偏 焦后的天线性能分别在图 7 a 和 b 中表示 从图 7 a 中可知 馈源阵各模式在 x f 轴方向上偏焦 时的方向性系数变化量为±0.5 db 且菱形 2 2 模式的值 最高 次之为菱形 3 3 模式 均在 45 db 以上 菱形 4 4 和 5 5 模式比单个喇叭的要低一些 这是由于副瓣照进去 的缘故 图 b 中可以看出 单个喇叭偏焦时副瓣电平值 是最高的 当偏移量为 7 个波长时 达到-16 db 左右 菱形 2 2 模式偏焦时副瓣电平为 -20 ± 1.5 db 其他三种模式 均小于-22.5 db 其中菱形 4 4 模式偏焦时副瓣电平均优 于-24.8 db 就副瓣电平而言 该模式的排布方式最优 接下来对馈源阵各模式进行馈源坐标 y f 轴偏焦 由 于馈源指向的反射面相对于馈源坐标的 y f 轴方向是对 称的 只需对各模式进行 y f 轴正方向偏焦仿真 在此取 图7 馈源阵各模式 x f 轴偏焦时天线性能曲线图

4 60 现代电子技术 2013 年第 36 卷 社 [3] LEE Y J YEO J MITRA R et al. Application of electromag netic band gap EBG superstrates withcontrollable defects for a class of patch antennas asspatial angular filters [J]. IEEE Transactions on Antennas Propag [4] GARCIA R BETANCOURT D IBAÑEZ A et al. Coherently periodic radiation structures CORPS A step towards high resolution radiations systems [C]// IEEE Symp. on Antenna and Propagation. Washington USA IEEE [5] BETANCOURT D DELRIO C. Multi beam applications of CORPS BFN reflector antenna feeding system [C]// 30th An tenna Workshop on Antennas for Earth Observation Science Telecommunication and Navigation Space Missions. Noordwijk Netherlands ESA [6] 李 明 洋 刘 敏 杨 放.HFSS 天 线 设 计 [M].北 京 电 子 工 业 出 版 社 [7] 魏 文 元 宫 德 明 陈 毕 森.天 线 原 理 [M].北 京 国 防 工 业 出 版 社 [8] 杨可忠 杨智友 章日荣.现代面天线新技术[M].北京 人民邮 图8 馈源阵各模式 y f 轴偏焦时天线性能曲线图 参 考 文 献 [1] 谢崇进 王华芝.卫星多波束天线综述[J].中国空间科学技术 [2] 叶云裳.航天器天线 理论与设计[M].北京 中国科学技术出版 作者简介 时政欣 电出版社 [9] BETANCOURT D DEL RIO C. A novel methodology to feed phased array antennas [J]. IEEE Transactions on Antennas and Propagation [10] BETANCOURT D DEL RIO C. Applications of the human eye working principle CORPS BFN [C]// EUCAP rd European Conference on Antennas and Propagation Berlin EUCAP 男 在读研究生 主要研究方向为航天器天线技术 上接第 49 页 4 结 [3] FARINA Alfonso. Antenna based signal processing techniques 论 将自适应旁瓣对消技术应用于通信对抗系统中是 确实可行的 它能够有效抑制来自旁瓣的强干扰信号 提高了主瓣内通信信号的侦察能力 参 考 文 献 [1] HAIMOVICH A M. A sampling based approach to wideband in for radar systems [M]. [S.l.] Artech House [4] COMPTON R T Jr. Adaptive antennas concepts and perfor mance [M]. England Cliffs New Jersy Prentice Hall [5] WIDROW Bernard STEARNS S D. Adaptive signal processing [M]. England Cliffs New Jersy Prentice Hall [6] WIENER N. Extrapolation interpretation and smoothing of stationary times series [M]. NY MIT Press and Wiley terference cancellation [J]. IEEE Trans. on Aerospace and Elec [7] LEONG H W H. A comparision of sidelobe cancellation tech [2] 保铮.自适应天线旁瓣相消的几个主要问题[J].西北电讯工程 surface wave radar [M]. Ottawa Defence Research Establish tronic Systems 学院学报 作者简介 杨瑞民 niques using auxiliary horizontal and vertical antennas in HF ment 男 1966 年出生 陕西富平人 副教授 研究方向为信号处理 电路设计

5 易迪拓培训 专注于微波 射频 天线设计人才的培养网址 : 如何学习天线设计 天线设计理论晦涩高深, 让许多工程师望而却步, 然而实际工程或实际工作中在设计天线时却很少用到这些高深晦涩的理论 实际上, 我们只需要懂得最基本的天线和射频基础知识, 借助于 HFSS CST 软件或者测试仪器就可以设计出工作性能良好的各类天线 易迪拓培训 ( 专注于微波射频和天线设计人才的培养, 推出了一系列天线设计培训视频课程 我们的视频培训课程, 化繁为简, 直观易学, 可以帮助您快速学习掌握天线设计的真谛, 让天线设计不再难 HFSS 天线设计培训课程套装套装包含 6 门视频课程和 1 本图书, 课程从基础讲起, 内容由浅入深, 理论介绍和实际操作讲解相结合, 全面系统的讲解了 HFSS 天线设计的全过程 是国内最全面 最专业的 HFSS 天线设计课程, 可以帮助你快速学习掌握如何使用 HFSS 软件进行天线设计, 让天线设计不再难 课程网址 : CST 天线设计视频培训课程套装套装包含 5 门视频培训课程, 由经验丰富的专家授课, 旨在帮助您从零开始, 全面系统地学习掌握 CST 微波工作室的功能应用和使用 CST 微波工作室进行天线设计实际过程和具体操作 视频课程, 边操作边讲解, 直观易学 ; 购买套装同时赠送 3 个月在线答疑, 帮您解答学习中遇到的问题, 让您学习无忧 详情浏览 : MHz NFC/RFID 线圈天线设计培训课程套装套装包含 4 门视频培训课程, 培训将 13.56MHz 线圈天线设计原理和仿真设计实践相结合, 全面系统地讲解了 13.56MHz 线圈天线的工作原理 设计方法 设计考量以及使用 HFSS 和 CST 仿真分析线圈天线的具体操作, 同时还介绍了 13.56MHz 线圈天线匹配电路的设计和调试 通过该套课程的学习, 可以帮助您快速学习掌握 13.56MHz 线圈天线及其匹配电路的原理 设计和调试 详情浏览 :

6 ` 专注于微波 射频 天线设计人才的培养易迪拓培训网址 : 关于易迪拓培训 : 易迪拓培训 ( 由数名来自于研发第一线的资深工程师发起成立, 一直致力和专注于微波 射频 天线设计研发人才的培养 ; 后于 2006 年整合合并微波 EDA 网 ( 现已发展成为国内最大的微波射频和天线设计人才培养基地, 成功推出多套微波射频以及天线设计经典培训课程和 ADS HFSS 等专业软件使用培训课程, 广受客户好评 ; 并先后与人民邮电出版社 电子工业出版社合作出版了多本专业图书, 帮助数万名工程师提升了专业技术能力 客户遍布中兴通讯 研通高频 埃威航电 国人通信等多家国内知名公司, 以及台湾工业技术研究院 永业科技 全一电子等多家台湾地区企业 我们的课程优势 : 成立于 2004 年,10 多年丰富的行业经验 一直专注于微波射频和天线设计工程师的培养, 更了解该行业对人才的要求 视频课程 既能达到了现场培训的效果, 又能免除您舟车劳顿的辛苦, 学习工作两不误 经验丰富的一线资深工程师主讲, 结合实际工程案例, 直观 实用 易学 联系我们 : 易迪拓培训官网 : 微波 EDA 网 : 官方淘宝店 :

易迪拓培训 专注于微波 射频 天线设计人才的培养网址 :http://www.edatop.com 如何学习天线设计 天线设计理论晦涩高深, 让许多工程师望而却步, 然而实际工程或实际工作中在设计天线时却很少用到这些高深晦涩的理论 实际上, 我们只需要懂得最基本的天线和射频基础知识, 借助于 HFSS CST 软件或者测试仪器就可以设计出工作性能良好的各类天线 易迪拓培训 (www.edatop.com)

More information

易迪拓培训 专注于微波 射频 天线设计人才的培养网址 :http://www.edatop.com 如何学习天线设计 天线设计理论晦涩高深, 让许多工程师望而却步, 然而实际工程或实际工作中在设计天线时却很少用到这些高深晦涩的理论 实际上, 我们只需要懂得最基本的天线和射频基础知识, 借助于 HFSS CST 软件或者测试仪器就可以设计出工作性能良好的各类天线 易迪拓培训 (www.edatop.com)

More information

易迪拓培训 专注于微波 射频 天线设计人才的培养网址 :http://www.edatop.com 射频和天线设计培训课程推荐 易迪拓培训 (www.edatop.com) 由数名来自于研发第一线的资深工程师发起成立, 致力并专注于微波 射频 天线设计研发人才的培养 ; 我们于 2006 年整合合并微波 EDA 网 (www.mweda.com), 现已发展成为国内最大的微波射频和天线设计人才培养基地,

More information

ANSYS 在航空航天器电磁兼容、电磁干扰分析中的应

ANSYS 在航空航天器电磁兼容、电磁干扰分析中的应 易迪拓培训 专注于微波 射频 天线设计人才的培养网址 :http://www.edatop.com 射频和天线设计培训课程推荐 易迪拓培训 (www.edatop.com) 由数名来自于研发第一线的资深工程师发起成立, 致力并专注于微波 射频 天线设计研发人才的培养 ; 我们于 2006 年整合合并微波 EDA 网 (www.mweda.com), 现已发展成为国内最大的微波射频和天线设计人才培养基地,

More information

西南交通大学硕士学位论文微带天线的小型化研究姓名 : 邓曦申请学位级别 : 硕士专业 : 电磁场与微波技术指导教师 : 刘运林 20100501 微带天线的小型化研究 作者 : 邓曦 学位授予单位 : 西南交通大学 本文链接 :http://d.g.wanfangdata.com.cn/thesis_y1688108.aspx

More information

3 MIMO 2 l WLAN FIR l0 t l -t l0 l60 l6 T 64 l6 GI 80 0 OFDM 2 64 OFDM OFDM l6 CP CP FFT Viterbi G 2 3 IEEE802.lla CSI ChanneI State Information l GI

3 MIMO 2 l WLAN FIR l0 t l -t l0 l60 l6 T 64 l6 GI 80 0 OFDM 2 64 OFDM OFDM l6 CP CP FFT Viterbi G 2 3 IEEE802.lla CSI ChanneI State Information l GI OFDM-WLAN 1 2 1 2 1 1 1 450002 2 710077 E-mail gjx516@sohu.com IEEE802.11a OFDM-WLAN OFDM-WLAN WLAN 1002-8331- 2004 04-0022-04 A TN925.93 Modeling and Simulation for OFDM-WLAN Systems with Multiple Antennas

More information

西安电子科技大学博士学位论文机载阵列雷达动目标检测与定位方法研究姓名 : 曲毅申请学位级别 : 博士专业 : 信号与信息处理指导教师 : 廖桂生 20090901 机载阵列雷达动目标检测与定位方法研究

More information

*P Q RSS &T OO!! " #$% "" " "&! "! (! " "! " "! ) " *! +, -."/0! 1 23! )+4 5! * " 6&73 " F M <6&,3 = ; - <,3 => -&A4">3 %<,3B /0C D E? > 1&>">3 6

*P Q RSS &T OO!!  #$%   &! ! (!  !  ! )  *! +, -./0! 1 23! )+4 5! *  6&73  F M <6&,3 = ; - <,3 => -&A4>3 %<,3B /0C D E? > 1&>>3 6 BE A DCCB 0 12345!627*#8429!:;< :lp~be5l~a 14*@HI/JK I *>20*@FL F4*>@F;6)450*> "MNOPQPNRSOPTUVWTXOSYQWYPPVWYQ@Z[P\WXYQ]YW^PV_WU

More information

usbintr.PDF

usbintr.PDF USB(Universal Serial Bus) USB( ) USB, USB PCI PC USB (host) USB (device) USB 1 PC PC USB PC 2 Plug-and-Play PC Plug-and- Play USB Plug-and-Play 3 PC / USB (USB 2.0 480Mb/s) USB USB 1 1 USB Toplogy USB

More information

,,: 65,A - 10A, 9, M1A1, 85 %: 148,35 72,1/ 6, 17 % (20 15 %) [1 ] ;1994,, 2 2,;2001, ; , ; ; F - 16 ;2 ;; F - 15 ; ;, :,,,, ,,,, M

,,: 65,A - 10A, 9, M1A1, 85 %: 148,35 72,1/ 6, 17 % (20 15 %) [1 ] ;1994,, 2 2,;2001, ; , ; ; F - 16 ;2 ;; F - 15 ; ;, :,,,, ,,,, M 2004 6 32 3 MODERN DEFENCE TECHNOLOGY J une 2004 Vol. 32 No. 3 Ξ,, (, 264001) :, :,,,,,,4 :; ;; : TN95911 + 7 ; TN957151 :A :10092086X(2004) 0320064205 Present situation, development and enlightenment

More information

untitled

untitled 1 2 3 MTBF 4 5 6 7 8 1 PCB EMC 2 3 FMEA FMEA FMEA FMEA F M E A RPN 1 FMEA 2 3 4 5 6 7 FMEA 4 5 6 7 1 2 3 4 5 FIT 5 FIT 5 FIT 6 6 7 7 3 8 MTBF MTTR FMEA A-availability MTBF-mean time between failure MTTF-mean

More information

Ω Ω 75Ω

Ω Ω 75Ω 18 A A A 0.1 AWG10 0.001 0.7m 1 0.083 m 1 90 RC=/Kρ /P /F N+R RC K ρ / 2 1 1 ρ 2.54 P / 2 F N R 0 A 1. 2. 3. 4. 5. 1.0 0.1 0.05Ω 10 100Ω 75Ω 50Ω 12 100 0.1A 1.0V 1.0A 10V 1.0A 10V I 2 R 100V 50A 100V 1.

More information

g g,, IFA [6 ] IFA (7),, H, IPFA, L, ; H, E E 1 IFA [8 ], L S [ 8 ], F ( PIFA), 2 L C, L C d ν H, Z0 [ 7 ], E : L C L C Z0 = ( 0 /

g g,, IFA [6 ] IFA (7),, H, IPFA, L, ; H, E E 1 IFA [8 ], L S [ 8 ], F ( PIFA), 2 L C, L C d ν H, Z0 [ 7 ], E : L C L C Z0 = ( 0 / : RFID RFID 1,2, 1,2, 2 (1. 710127 ;2. 518057) : U HF 840 845 M Hz 920 925 M Hz, E F,, E, 850 M Hz 920 M Hz, (VSWR < 2) E F,, :RFID ; IFA ; ; : TN82 :B :10042373X(2009) 102140203 Design of Novel Dual2frequency

More information

PCB a 2.5mm b 4.0mm A mm W/cm 3 PCB PCB 2.0mm 1.5mm PCB PCB

PCB a 2.5mm b 4.0mm A mm W/cm 3 PCB PCB 2.0mm 1.5mm PCB PCB 1. PCB PCB PCB PCB EMC EMI 2. PCB PCB PCB 3. via Blind via Buried via Through via Component hole Stand off 4. / TS S0902010001 TS SOE0199001 TS SOE0199002 IEC60194 > > > > Printed Circuit

More information

PowerPoint Presentation

PowerPoint Presentation Sizing Handbook I 6 to 10 10w, w or 5w (3 to 4), w < Note: Port sizing guidelines are not inviolable rules true in all cases. For example, if meeting te eigt and widt requirements outlined result in a

More information

Design of Dual-Frequency Microstrip Antennas Using a Shorting-Pin Loading - Antennas and Propagation Society International Symposium, IEEE

Design of Dual-Frequency Microstrip Antennas Using a Shorting-Pin Loading - Antennas and Propagation Society International Symposium, IEEE DESIGN OF DUAL-FREQUENCY MICROSTRIP ANTENNA USING A SHORTING-PIN LOADING *Shan-Cheng Pan' and Kin-Lu Wong2 'Department of Electronic Engineering, Yung Ta College of Technology and Commerce, Pingtung. Taiwan,

More information

pages.pdf

pages.pdf A Novel Dual-Band Microstrip Antenna for WLAN Application R.J. Lin, M. Ye School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China Keywords: dual-band; microstrip

More information

2014 年 8 月 第4 期 Aug 2014 No 4 城 市 勘 测 Urban Geotechnical Investigation Surveying 文章编号 1672 8262 2014 04 91 04 中图分类号 P228 文献标识码 B GNSS 接 收 机 天 线 相 位 中 心 改 正 的 影 响 分 析 1倡 2 3 2 张碧波 李江卫 熊佑祥 孙伟 1畅天门市勘察测绘研究院

More information

Microsoft PowerPoint L10

Microsoft PowerPoint L10 6.00 CRCUTS AND ELECTRNCS Amplifiers -- Small Signal Model 6.00 Fall 000 Lecture 10 1 Reiew MSFET amp V S R L i DS Saturation discipline operate MSFET only in saturation region Large signal analysis 1.

More information

PCB Layout using ADS November 29, 2005 PCB Layout using ADS Dr. B. Frank Department of Electrical and Computer Engineering Queen's University Slide 1

PCB Layout using ADS November 29, 2005 PCB Layout using ADS Dr. B. Frank Department of Electrical and Computer Engineering Queen's University Slide 1 Dr. B. Frank Department of Electrical and Computer Engineering Queen's University Slide 1 Motivation Need circuit more reliable than breadboard? Working at RF/microwave frequencies? Printed circuit board

More information

RFID Transponder operating at MHz

RFID Transponder operating at MHz RF-ID Transponder operating at 13.56 MHz Radio Frequency Identification Systems (RF-ID) are widely used and allow advanced solutions for a variety of applications in the area of authentication, ticketing,

More information

TB215.doc

TB215.doc 2 1 C5 10uF +28 V C4 R3 3.9k C8 R5 1k C18 R10 3.9k C23 10uF D1 5.6V D2 5.6V C11 10uF D3 5.6V L6 B P1 10k L3 P2 10k L5 P3 10k L7 B R2 9.1k R4 C6 SP201 C7 T1 R6 9.1k C9 R8 C12 L4 C13 T2 C16 T3 T4a R11 9.1k

More information

CAM350 CAM350 CAM350 CAM350 Export Gerber 274D 274X Fire9000 Barco DPF NC Drill Mill Excellon Sieb Meyer IPC D 350 IPC D A Modification CAM/Ger

CAM350 CAM350 CAM350 CAM350 Export Gerber 274D 274X Fire9000 Barco DPF NC Drill Mill Excellon Sieb Meyer IPC D 350 IPC D A Modification CAM/Ger CAM350 CAM350 CAM350 PCB CAM CAM350 CAM350 Fabrication Modules C350-750 C350-460 C350-260 C350-110 C350-050 Import X X X X X Information X X X X X Export X X X X Opt. Modification X X X X Opt. Optimization

More information

The project High Datarate satellite transmission system Design of a space qualifiable transmitter Suited for LEO satellites and other small satellites

The project High Datarate satellite transmission system Design of a space qualifiable transmitter Suited for LEO satellites and other small satellites Satellite Downlink Simulation with VSS including Matlab Models Slide 1 The project High Datarate satellite transmission system Design of a space qualifiable transmitter Suited for LEO satellites and other

More information

, V m 3,, I p R 1 = ( I p + I 1 ) / R 0 I p, R 1 / 4, R m V d, 1. 1 Doherty MRF6P21190 LDMOS,,, Doherty B Freescale M6P21190 ADS 2 Doherty 3 Doherty,

, V m 3,, I p R 1 = ( I p + I 1 ) / R 0 I p, R 1 / 4, R m V d, 1. 1 Doherty MRF6P21190 LDMOS,,, Doherty B Freescale M6P21190 ADS 2 Doherty 3 Doherty, TN702 A 1009-2552(2007) 03-0045 - 06 Doherty, (, 430074) Doherty WCDMA ADS, 35 (45. 4dBm), ACLR - 55dBc WCDMA ; ; Doherty ; ; PAE Design of linearized Doherty power amplifier GENG Zhi, GUO Wei (Department

More information

西 安 电 子 科 技 大 学 硕 士 学 位 论 文 人 体 对 移 动 通 信 手 机 天 线 辐 射 特 性 的 影 响 姓 名 : 郑 婕 申 请 学 位 级 别 : 硕 士 专 业 : 生 物 医 学 工 程 指 导 教 师 : 赵 建 勋 20090101 易 迪 拓 培 训 专 注

More information

Dual-band Dipole Antenna for ISO /ISO Passive RFID Tag Applications

Dual-band Dipole Antenna for ISO /ISO Passive RFID Tag Applications Dual-band Dipole Antenna for ISO 18-6/ISO 18-4 Passive RFID Tag Applications Seunggil Jeon (1), Yeonsik Yu (1), Sungtek Kahng (2), Juderk Park (3), NaeSoo Kim (3), Jaehoon Choi (1) * (1)Department of Electrical

More information

The width and length of those microstrip lines control the coupled power amplitude to the patches. Likewise, each subarray is fed by means of a vertic

The width and length of those microstrip lines control the coupled power amplitude to the patches. Likewise, each subarray is fed by means of a vertic IEEE MELECON 26, May 16-19, Benalmádena (Málaga), Spain Monopulse Waveguide Patch Array Antenna in 37 GHz Band Manuel Sierra Pérez, Pedro Rodríguez Fernández, José Luis Masa Campos, José Luis Fernández

More information

6 7 EPCOS S+M 4 = å r =21, 7 GHz Q 7 200, MgTiO 3 -CaTiO 3 å r =38 7 GHz Q (Zr Sn)TiO 4 å r = GHz Q Ba(Zr Zn Ta)O 3 å r

6 7 EPCOS S+M 4 = å r =21, 7 GHz Q 7 200, MgTiO 3 -CaTiO 3 å r =38 7 GHz Q (Zr Sn)TiO 4 å r = GHz Q Ba(Zr Zn Ta)O 3 å r 6 Vol.23 No.6 2004 6 ELECTRONIC COMPONENTS & MATERIALS Jun. 2004 1 2 3 4 5 TM28 TN61 A 1001-2028 2004 06-0006-04 Development of Microwave Dielectric Materials and Its Applications ZHANG Jin-tai 1, XU Sai-qing

More information

Directional Couplers.doc

Directional Couplers.doc Directional ouplers [] THE QUADRATURE (90 ) HYBRID The Hybrid coupler is often made of microstrip or stripline as shown in Figure. The microstrip form is also pictured in Figure 2. These couplers are 3

More information

Design System Designer RF Analog - Designer Ptolemy Simulator System level - Designer E D A - s Modelsim RTL EDGE GSM WLAN Numeric Ptolemy Timed NC-Ve

Design System Designer RF Analog - Designer Ptolemy Simulator System level - Designer E D A - s Modelsim RTL EDGE GSM WLAN Numeric Ptolemy Timed NC-Ve Content Reprint Advanced Design System for Designer E D A 21 GPRS WCDMA TDS-CDMA IEEE 802.11a IEEE 802.11b IEEE 802.11g PDA CICeNews-23 CIC Agilent Advanced 1 Design System Designer RF Analog - Designer

More information

Yageo Chip Antenna Sum V doc

Yageo Chip Antenna Sum V doc 1 Yageo - Chip Antenna Version :Step. 2010 Features : Embedded antenna - small antennas with moderate gain and efficiency performance Ultra compact - various sizes (2012, 3012, 3216, 4018, 5010, 5320,

More information

untitled

untitled S http://www.mweda.com ADS Momentum Patch Antenna microstrip line circuit high Qbroadside directivity( end-fired antenna) feed in cavityads(advanced Design System) feed in Transmission Line Feed 1 feedfeed

More information

Presentation - Advanced Planar Antenna Designs for Wireless Devices

Presentation - Advanced Planar Antenna Designs for Wireless Devices 2003-11 Ansoft Workshop Advanced Planar Antenna Designs for Wireless Devices 翁金輅 (Kin-Lu Wong) 國立中山大學電機系 Dept. of Electrical Engineering National Sun Yat-Sen University Kaohsiung 80424, Taiwan E-mail:

More information

1262 PIERS Proceedings, Beijing, China, March 23 27, 2009 with the tag IC, the gap width of the capacitive coupling structure was varied to tune the i

1262 PIERS Proceedings, Beijing, China, March 23 27, 2009 with the tag IC, the gap width of the capacitive coupling structure was varied to tune the i Progress In Electromagnetics Research Symposium, Beijing, China, March 23 27, 2009 1261 A Metal Tag Antenna for Passive UHF RFID Applications Hsien-Wen Liu, Yu-Shu Lin, Kuo-Hsien Wu, and Chang-Fa Yang

More information

1! ] : ; "4 ] 5 ] 6 "7 ] 3 8 ] 1 <sub-cell : ; <cl ust er 1 ] M M <ti er 1 Bs 1 M {f 1 - f M } Bs - Bs M {f M - f 1 } 1 1 f <6 9 ] f <6 = f e <

1! ] : ; 4 ] 5 ] 6 7 ] 3 8 ] 1 <sub-cell : ; <cl ust er 1 ] M M <ti er 1 Bs 1 M {f 1 - f M } Bs - Bs M {f M - f 1 } 1 1 f <6 9 ] f <6 = f e < 19 1 004 Vol.19!o.1 CHI ESE J 0 URAL 0 F RADI 0 SCI ECE Febr uar y!004 1005-0388 "004 #01-014-05 % 1 1 "1.!ZhangZf!cCupt.edu.cn! 400065 $.! 610054 #! " " 3 "!!!!! T99. 5 B Handover perf or mance anal ysis

More information

( ) T arget R ecogn ition),,,,,,, ( IFF, Iden tification F riend o r Foe),,,,,,, ( N CTR, N on2 Cooperative T arget R ecogn ition), (

( ) T arget R ecogn ition),,,,,,, ( IFF, Iden tification F riend o r Foe),,,,,,, ( N CTR, N on2 Cooperative T arget R ecogn ition), ( V o l. 33, N o. 11 N ovem ber, 2008 F ire Contro l and Comm and Contro l 33 11 2008 11 : 100220640 (2008) 1120005203 1, 1, 1, 2, 1 (11, 100072, 21, 100072) :,,,, g :,,, : TN 97111 : A The Iden tif ication

More information

渐 变 槽 线 天 线 的 研 究 及 其 在 移 动 通 信 基 站 中 的 应 用 作 者 : 沈 薇 学 位 授 予 单 位 : 东 南 大 学 本 文 链 接 :http://d.g.wanfangdata.com.cn/thesis_y1039826.aspx 易 迪 拓 培 训 专 注 于 微 波 射 频 天 线 设 计 人 才 的 培 养 网 址 :http://www.edatop.com

More information

3.1.doc

3.1.doc SMEMA FIDUCIAL MARK STANDARD Standard 3.1 1.0 SCOPE: This SMEMA standard is for fiducial marks. It was developed to facilitate the accurate placement of components on printed circuit boards. SMEMA standards

More information

DATASHEET SEARCH SITE |

DATASHEET SEARCH SITE | 2 18 GHz Ultra Low Noise Pseudomorphic HEMT Technical Data ATF-3677 Features PHEMT Technology Ultra-Low Noise Figure:.5 db Typical at 12 GHz.3 db Typical at 4 GHz High Associated Gain: 12 db Typical at

More information

untitled

untitled ( RF Application list Application Wireless mouse Wireless Keyboard Wireless joystick FRS (Family Radio Service) Remote control Car alarm Home security Cordless phone Video sender Wireless earphone microphone

More information

DSCHA Jun 06

DSCHA Jun 06 CHA3666 RoHS COMPLIANT 6-17GHz Low Noise Amplifier GaAs Monolithic Microwave IC Description The CHA3666 is a two-stage self biased wide band monolithic low noise amplifier. D1 D2 The circuit is manufactured

More information

Microsoft PowerPoint - Pres_ansoft_elettronica.ppt

Microsoft PowerPoint - Pres_ansoft_elettronica.ppt 1,5-40 GHz Meander Spiral Antenna Simulation and Design Presenter: Fabrizio Trotta Ansoft Corporation Application Introduction Design Specification Antenna Topology Numerical Method Approach Design Methodology

More information

amp_b3.PDF

amp_b3.PDF San Jose State University Department of Electrical Engineering ELECTRICAL ENGINEERING SENIOR PROJECT Microwave Amplifier Design (part 3) by Steve Garcia Jaime Cordoba Inderpreet Obhi December 15, 2003

More information

Special Materials in CST STUDIO SUITE 2012

Special Materials in CST STUDIO SUITE 2012 Modelling Thin Materials in CST STUDIO SUITE 2012 Lossy Metal Ohmic Sheets Tabulated Surface Impedance Thin Panel Various Material Types Material types Available in which solvers? * FIT TLM *Apart from

More information

Title

Title Broadband Microstrip-Fed Modified Quasi-Yagi Antenna Shih-Yuan Chen and Powen Hsu Department of Electrical Engineering and Graduate Institute of Communication Engineering National Taiwan University Taipei

More information

Combline Cavity Filter Design in HFSS

Combline Cavity Filter Design in HFSS Presented by Jim Reed of Optimal Designs 3 Pole Cavity Combline Filter to be used in Demonstration for Filter Tuning Simulated / Measured Data for Real World Example, Compliments of Sierra Microwave Technologies

More information

Microsoft PowerPoint - Lecture-08.ppt

Microsoft PowerPoint - Lecture-08.ppt Introduction to Algorithms 6.046J/18.401J Lecture 8 Prof. Piotr Indyk Data structures Previous lecture: hash tables Insert, Delete, Search in (expected) constant time Works for integers from {0 m r -1}

More information

Microsoft Word - AN95007.doc

Microsoft Word - AN95007.doc Understanding VCO Concepts OSCILLATOR FUNDAMENTALS An oscillator circuit can be modeled as shown in Figure 1 as the combination of an amplifier with gain A (jω) and a feedback network β (jω), having frequency-dependent

More information

Microsoft PowerPoint - seminaari 26_5_04_antenniteknologiat.ppt

Microsoft PowerPoint - seminaari 26_5_04_antenniteknologiat.ppt Antenna technologies Antenna technologies Current status trends Outlook to different antenna solutions, examples Summary, challenges for the future Current status trends dual-band GSM tri-band GSM GPS

More information

RF Balum Transformers integrated circuit is a common application of these devices. Figure 4 shows the first mixer stage and second mixer stage of a re

RF Balum Transformers integrated circuit is a common application of these devices. Figure 4 shows the first mixer stage and second mixer stage of a re Application Note RF Balun Transformers Introduction This application note is designed to help the reader understand how balun transformers can be used in today s RF/Microwave communication applications.

More information

Novel 2-D Photonic Bandgap Structure For Microstrip Lines - IEEE Microwa ve and Guided Wave Letters

Novel 2-D Photonic Bandgap Structure For Microstrip Lines - IEEE Microwa
ve and Guided Wave Letters IEEE MICROWAVE AND GUIDED WAVE LETTERS, VOL. 8, NO. 2, FEBRUARY 1998 69 Novel 2-D Photonic Bandgap Structure for Microstrip Lines Vesna Radisic, Student Member, IEEE, Yongxi Qian, Member, IEEE, Roberto

More information

Progress In Electromagnetics Research Symposium 27, Prague, Czech Republic, August W1 H Feed Line Z L2 L1 W2 X Y Radiating Patch L3 I-Shaped Sl

Progress In Electromagnetics Research Symposium 27, Prague, Czech Republic, August W1 H Feed Line Z L2 L1 W2 X Y Radiating Patch L3 I-Shaped Sl 158 PIERS Proceedings, August 27, Prague, Czech Republic, 27 A Novel Antenna Design for UHF RFID Tag on Metallic Objects Youngman Um 1, Uisheon Kim 1, Wonmo Seong 2, and Jaehoon Choi 1 1 Department of

More information

BranchLine Coupler - Quadrature

BranchLine Coupler - Quadrature of 3 () Branchine oupler - Quadrature Zo Zo λ/4 90 NOTE This device is sensitive to load mismatches. () ange oupler (Quadrature) Output oupled φ90 Broadband coupling 3dB 0dB Quadrature Input λ/4 Directive

More information

Microsoft Word - Lecture 24 notes, 322, v2.doc

Microsoft Word - Lecture 24 notes, 322, v2.doc Whites, EE 322 Lecture 24 Page 1 of 10 Lecture 24: Oscillators. Clapp Oscillator. VFO Startup Oscillators are circuits that produce periodic output voltages, such as sinusoids. They accomplish this feat

More information

APPLI002.DOC

APPLI002.DOC SIEGET 25 Silicon Bipolar- Dielectric Resonator Oscillator (DRO) at 10 GHz Oscillators represent the basic microwave energy source for all microwave systems such as radar, communications and navigation.

More information

A stair-shaped slot antenna for the triple-band WLAN applications

A stair-shaped slot antenna for the triple-band WLAN applications of the constructed prototype at 5800 MHz (center frequency of the 5.8-GHz band), and similar directional radiation patterns are also obtained. Figure 5 shows the measured peak antenna gain for operating

More information

Microsoft Word - LAB 2 non-linear LNA.doc

Microsoft Word - LAB 2 non-linear LNA.doc LAB 2. Non-linearity in LNA Objective: 1. One-tone test 2. two-tone test 3. Bias circuit design 4. Noise Circle and Input matching 5. Output matching for maximum gain 6. Final matching network design One-tone

More information

HFSS Antenna Design Kit

HFSS Antenna Design Kit Ansoft HFSS Antenna Design Kit Arien Sligar 2007 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Overview of HFSS Antenna Design Kit GUI-based wizard tool Automates geometry creation, solution

More information

A Miniature GPS Planar Chip Antenna Integrated with Low Noise Amplifier

A Miniature GPS Planar Chip Antenna Integrated with Low Noise Amplifier A Miniature GPS Planar Chip Antenna Integrated with Low Noise Amplifier 1 Chao-Wei Wang*, Yen-Ming Chen, Chang-Fa Yang Department of Electrical Engineering, National Taiwan University of Science and Technology

More information

Balun Design

Balun Design 1 of 6 Balun Design In the design of mixers, push-pull amplifiers, baluns are used to link a symmetrical (balanced) circuit to a asymmetrical (unbalanced) circuit. Baluns are designed to have a precise

More information

A stair-shaped slot antenna for the triple-band WLAN applications

A stair-shaped slot antenna for the triple-band WLAN applications of the constructed prototype at 5800 MHz (center frequency of the 5.8-GHz band), and similar directional radiation patterns are also obtained. Figure 5 shows the measured peak antenna gain for operating

More information

Balun Design

Balun Design 1 of 6 Balun Design In the design of mixers, push-pull amplifiers, baluns are used to link a symmetrical (balanced) circuit to a asymmetrical (unbalanced) circuit. Baluns are designed to have a precise

More information

New compact six-band internal antenna - Antennas and Wireless Propagation Letters

New compact six-band internal antenna - Antennas and Wireless Propagation Letters IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 3, 2004 295 New Compact Six-Band Internal Antenna Yong-Xin Guo, Member, IEEE, and Hwee Siang Tan Abstract A novel compact six-band internal handset

More information

HFSS Antenna Design Kit

HFSS Antenna Design Kit Ansoft HFSS Antenna Design Kit Arien Sligar 2007 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Overview of HFSS Antenna Design Kit GUI-based wizard tool Automates geometry creation, solution

More information

CSTHandOut

CSTHandOut CST DESIGN STUDIO TM, CST PARTICLE STUDIO TM - 1 - Linking MATLAB and CST STUDIO USER NOTE This user note is centered on the use of CST MICROWAVE STUDIO (CST MWS) with MATLAB. MATLAB is a scientific computing

More information

Basic BJT Circuit

Basic BJT Circuit of 7 Long-ail Pai ansisto Ciuit Figue low shows the simplied Pi model of a Long-ail Pai tansisto iuit. i B -.i C V gm.v V V d i 0 Q Q V B V B V -.i C gm.v -V B i V o If Vd and - V d ie no ommon-mode signal

More information

Filter Design in Thirty Seconds

Filter Design in Thirty Seconds Application Report SLOA093 December 2001 Filter Design in Thirty Seconds Bruce Carter High Performance Analog ABSTRACT Need a filter fast? No theory, very little math just working filter designs, and in

More information

3152 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 11, NOVEMBER 2004 (c) Fig. 2. y z plane radiation patterns ofoma computed using FDTD

3152 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 11, NOVEMBER 2004 (c) Fig. 2. y z plane radiation patterns ofoma computed using FDTD IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 52, NO. 11, NOVEMBER 2004 3151 An Omnidirectional Planar Microstrip Antenna Randy Bancroft and Blaine Bateman Abstract A new omnidirectional printed

More information

untitled

untitled Compact Metamaterial High Isolation MIMO Antenna Subsystem Cheng-Jung Lee, Maha Achour, and Ajay Gummalla Rayspan Corporation, San Diego, CA, USA Cheng@rayspan.com Introduction The use of multiple antennas

More information

HBCU-5710r Dec11

HBCU-5710r Dec11 HSMP-3816 High Linearity PIN Diode Pi Attenuator Using a Diode Quad in Low Cost SOT-2 Package Application Note 262 Introduction Avago Technologies HSMP-3816 consists of four high linearity PIN diodes in

More information

Microsoft Word - M3_PB_IPJ_Monza3DuraProductBrief_ _R6.doc

Microsoft Word - M3_PB_IPJ_Monza3DuraProductBrief_ _R6.doc UHF Gen 2 RFID Tag Chip (IPJ-P5002-D2) Monza 3 Dura Features High sensitivity coupled with superior interference rejection yields excellent tag performance even when buried deep within a pallet of RF-absorbing

More information

1 HoWeIIs - AppIebaum MMSE GHZ FFT CMA MRC ATR 2 MRC CMA FPGA WCDMA 6 NTT - DoCoMo 3G UMTS W - CDMA GHZTDMA

1 HoWeIIs - AppIebaum MMSE GHZ FFT CMA MRC ATR 2 MRC CMA FPGA WCDMA 6 NTT - DoCoMo 3G UMTS W - CDMA GHZTDMA 1001-893X 2006 01-0010 - 08 *!! " a. b. 400044 RF RF MIMO ATR ESPAR ESPAR TN821 A Smart Antenna Techn and Its Deve pment LEI Jian - mei a CHEN Min b a. Communication SchooI b. BiomedicaI Engineering SchooI

More information

192 IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 5, 2006 This method can be applied to all kinds of antennas in any environment and it becomes

192 IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 5, 2006 This method can be applied to all kinds of antennas in any environment and it becomes IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 5, 2006 191 Calculation of Small Antennas Quality Factor Using FDTD Method S. Collardey, A. Sharaiha, Member, IEEE, and K. Mahdjoubi, Member, IEEE Abstract

More information

書名:

書名: 8 I/O Circuit Package 8-2 VLSI / 8.1 I/O Circuit Schematic entry Layout I/O Circuit I/O IC [33] IC µm IC mm Bonding wire Bonding wire µm IC 8-1 Dual In line Package (DIP) Die Bonding Pad Bonding Wire Bonding

More information

Cadence Design Systems, Inc Cadence PART bug bug Cadence QSR Sourcelink QSR Cadence Cadence Cadence PSD14.2 PSD cadence 1 Cadenc

Cadence Design Systems, Inc Cadence PART bug bug Cadence QSR Sourcelink QSR Cadence Cadence Cadence PSD14.2 PSD cadence 1 Cadenc Cadence PART 1 1. 14.1 13.6 bug bug Cadence QSR Sourcelink QSR Cadence Cadence Cadence PSD14.2 PSD15.0 2. cadence 1 Cadence 30 90 High Speed Technical Centre 3. cadence Cadence PART 2 CADENCE BUG : 1.

More information

Integrated microstrip and rectangular waveguide in planar form - IEEE Microwave and Wireless Components Letters [see also IEEE Microwave and Guided Wave Letters]

Integrated microstrip and rectangular waveguide in planar form - IEEE Microwave and Wireless Components Letters [see also IEEE Microwave and Guided Wave Letters] 68 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 11, NO. 2, FEBRUARY 2001 Integrated Microstrip and Rectangular Waveguide in Planar Form Dominic Deslandes and Ke Wu, Fellow, IEEE Abstract Usually

More information

AWT6166_Rev_0.3.PMD

AWT6166_Rev_0.3.PMD FEATURES Integrated Vreg (regulated supply) Harmonic Performance 25 High Efficiency (PAE) at Pmax: GSM850, 54% GSM900, 56% DCS, 53% PCS, 51% +35 GSM850/900 Output Power at 3.5 V +33 DCS/PCS Output Power

More information

Full Band Waveguide-to-Microstrip Probe Transitions - Microwave Symposium Digest, 1999 IEEE MTT-S International

Full Band Waveguide-to-Microstrip Probe Transitions - Microwave Symposium Digest, 1999 IEEE MTT-S International THlB-5 Full Band Waveguide-to-Microstrip Probe Transitions Yoke-Choy Leong' and Sander Weinreb2 'Department of Electrical and Computer Engineering University of Massachusetts, Amherst, MA 01003 Jet Propulsion

More information

Hybrid of Monopole and Dipole Antennas for Concurrent 2.4- and 5-GHz WLAN Access Point

Hybrid of Monopole and Dipole Antennas for Concurrent 2.4- and 5-GHz WLAN Access Point Hybrid of Monopole and Dipole Antennas for Concurrent 2.4- and 5-GHz WLAN Access Point Saou-Wen Su 1, Jui-Hung Chou 2 Network Access Strategic Business Unit Lite-On Technology Corp., No. 9, Chien I Road,

More information

易 迪 拓 培 训 专 注 于 微 波 射 频 天 线 设 计 人 才 的 培 养 网 址 :http://www.edatop.com 如 何 学 习 天 线 设 计 天 线 设 计 理 论 晦 涩 高 深, 让 许 多 工 程 师 望 而 却 步, 然 而 实 际 工 程 或 实 际 工 作 中 在 设 计 天 线 时 却 很 少 用 到 这 些 高 深 晦 涩 的 理 论 实 际 上, 我 们

More information

第1讲-电磁兼容导论.ppt

第1讲-电磁兼容导论.ppt Advanced EMC +62784709 13601024327 hejl@tsinghua.edu.cn 1 1 1.1 1.2 1.3 1.4 1.5 1.6 EMC 2 1 166.111.63.4:1021 emc 303 3 1975 7 14 25 26 50 700 21 4 0 400GHz EMC 1994 25 5 6 1.1 Electromagnetic Compatibility

More information

A low-profile planar monopole antenna for multiband operation of mobile handsets - Antennas and Propagation, IEEE Transactions on

A low-profile planar monopole antenna for multiband operation of mobile handsets - Antennas and Propagation, IEEE Transactions on IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 51, NO. 1, JANUARY 2003 121 A Low-Profile Planar Monopole Antenna for Multiband Operation of Mobile Handsets Kin-Lu Wong, Senior Member, IEEE, Gwo-Yun

More information

叶文熙 等 高增益 Ka 波段 EBG 天线阵列的设计 第7期 77 结构如图 1 所示 在仿真时 在谐振点处 喇叭加上膜片 的反射系数应与喇叭加上 EBG 反射板时的反射系数共 轭匹配 图1 膜片结构与尺寸 EBG 反射板的设计 由于反射板与接地板间形成 FP 谐振腔 因此谐振 腔的 Q 值影响了

叶文熙 等 高增益 Ka 波段 EBG 天线阵列的设计 第7期 77 结构如图 1 所示 在仿真时 在谐振点处 喇叭加上膜片 的反射系数应与喇叭加上 EBG 反射板时的反射系数共 轭匹配 图1 膜片结构与尺寸 EBG 反射板的设计 由于反射板与接地板间形成 FP 谐振腔 因此谐振 腔的 Q 值影响了 014 年 4 月 1 日 第 37 卷第 7 期 Apr. 014 Vol. 37 No. 7 现代电子技术 Modern Electronics Technique 76 高增益 Ka 波段 EBG 天线阵列的设计 叶文熙 李正军 中国空间技术研究院 西安分院 陕西 西安 摘 710100 要 电磁带隙 EBG 天线是一种可以提高天线辐射口径及增益的新型天线 以 FSS 作为 EBG 反射面 角锥喇叭作

More information

易 迪 拓 培 训 专 注 于 微 波 射 频 天 线 设 计 人 才 的 培 养 网 址 :http://www.edatop.com 射 频 和 天 线 设 计 培 训 课 程 推 荐 易 迪 拓 培 训 (www.edatop.com) 由 数 名 来 自 于 研 发 第 一 线 的 资 深 工 程 师 发 起 成 立, 致 力 并 专 注 于 微 波 射 频 天 线 设 计 研 发 人 才

More information

FSA W Low Voltage Dual DPDT Analog Switch

FSA W Low Voltage Dual DPDT Analog Switch 0.4: Low Voltage Dual DPDT Analog Switch General Description The FSA2467 is a Dual Double Pole Double Throw (DPDT) analog switch. The FSA2467 operates from a single 1.65V to 4.3V supply. The FSA2467 features

More information

Microsoft Word - nAN900-04_rev2_1.doc

Microsoft Word - nAN900-04_rev2_1.doc nan900-04 1. General Gerber files for RF layouts have been made for Nordic Semiconductor s nrf905 Single Chip 433/868/915MHz RF Transceiver [1]. A loop antenna for 433MHz has also been made available.

More information

Triple-band triangular-shaped meander monopole antenna with two coupled lines

Triple-band triangular-shaped meander monopole antenna with two coupled lines TRIPLE-BAND TRIANGULAR-SHAPED MEANDER MONOPOLE ANTENNA WITH TWO COUPLED LINES Horng-Dean Chen Department of Electronic Engineering Cheng-Shiu Institute of Technology Kaohsiung, Taiwan 833, R.O.C. Received

More information

Microsoft Word - APMC譛€邨ゆク雁さV2.0.doc

Microsoft Word - APMC譛€邨ゆク雁さV2.0.doc Proceedings of Asia-Pacific Microwave Conference 2006 Wideband Slotline-to-Rectangular Waveguide Transition Using Truncated Bow-Tie Antenna Ruei -Ying Fang and Chun-Long Wang Department of Electronics

More information

No Slide Title

No Slide Title Workshop 5: Basic Transient Sources and Circuit 16.0 Release ANSYS Maxwell 3D 2015 1 2015 ANSYS, Inc. March 19, 2015 Transient Setup About Workshop This workshop discusses basic setup details of Magnetic

More information

スライド 1

スライド 1 MARUWA PRODUCT SELECTION GUIDES MARUWA( ) EMC EMC SOLUSION BY ELECTRO CERAMICS 1 10KHZ 100KHz 1MHz 10MHz 100MHz 1GHz 10GHz 块 馈 馈 馈 1 10 100 1000 2 MARUWA EMC COMPONENTS MARUWA EMC COMPONENTS 3 ESR MLCC

More information

李 栋 陈 德 元 国 防 将 性 能 测 量 与 层 次 化 动 态 雷 达 图 可 视 化 方 法 相 结 合 提 出 了 一 种 空 间 通 信 网 性 能 仿 真 新 方 法 构 建 了 仿 真 系 统 平 台 同 时 在 分 析 空 间 通 信 网 性 能 参 数 的 基 础 上 提 出 了 一 种 改 进 的 双 分 组 对 路 径 带 宽 测 量 方 法 并 利 用 空 间 通 信 网

More information

rd 5.7 = = = 1. cm (II-4) fd 9 This is more of what we are looking for. If we would use a frequency of 900 MHz this even reduces to 6.cm (assumed ε r

rd 5.7 = = = 1. cm (II-4) fd 9 This is more of what we are looking for. If we would use a frequency of 900 MHz this even reduces to 6.cm (assumed ε r Printed Dipole Antenna Reto Zingg Abstract In this project a printed dipole antenna is being designed. Printed dipole antennas are of interest, when an electronic product, which is implemented on a printed

More information

lumprlc.fm

lumprlc.fm Ansoft HFSS Engineering Note Lumped RLC Elements in HFSS Version 8 In Ansoft s High Frequency Structure Simulator (HFSS), a specified impedance boundary condition has always referred to field values because

More information

Thus, the antenna has the ability to receive both vertically and horizontally polarized electromagnetic waves, which can be proven beneficial in indoo

Thus, the antenna has the ability to receive both vertically and horizontally polarized electromagnetic waves, which can be proven beneficial in indoo PIFA Planar Inverted F Antenna Iulian Rosu, YO3DAC / VA3IUL http://www.qsl.net/va3iul The Inverted F Antenna (IFA) typically consists of a rectangular planar element located above a ground plane, a short

More information

10 percent of its revenues are invested directly in research and development activities. SIMULATION OF THE MICRO APERTURE-ELECTRODE SYSTEM Isèbe uses

10 percent of its revenues are invested directly in research and development activities. SIMULATION OF THE MICRO APERTURE-ELECTRODE SYSTEM Isèbe uses HORIBA Medical, France OPTIMIZING HEMATOLOGY ANALYSIS: WHEN PHYSICAL PROTOTYPES FAIL, SIMULATION PROVIDES THE ANSWERS In order to take measurements that are inaccessible using just physical prototyping,

More information

Microsoft Word - Radar Cross Section.doc

Microsoft Word - Radar Cross Section.doc Ansoft HFSS Advanced Training Exercise Radar Cross Section This exercise assumes that you already have some experience with Ansoft HFSS. Therefore, not every button click will be described. 1. Introduction

More information

片下面是介质板, 由绝缘介质构成, 最下层的是无限大的导体接地板 参数 增益的影响 (a)sub_hmin 对 S 参数的影响 图 1 典型微带天线结构图 微带天线的辐射原理是 : 在导体贴片与接地板之间激励起电磁场, 并通过贴片四周与接地板之间的缝隙向外辐射, 辐射场是贴片边沿与接地板之间的缝隙场

片下面是介质板, 由绝缘介质构成, 最下层的是无限大的导体接地板 参数 增益的影响 (a)sub_hmin 对 S 参数的影响 图 1 典型微带天线结构图 微带天线的辐射原理是 : 在导体贴片与接地板之间激励起电磁场, 并通过贴片四周与接地板之间的缝隙向外辐射, 辐射场是贴片边沿与接地板之间的缝隙场 一种新颖的宽带微带天线 刘广燕杨宏春张连红阮成礼 ( 电子科技大学物理电子学院, 成都 610054) 摘要 : 微带天线的窄带特性是限制其广泛应用的重要原因之一, 如何展宽微带天线的带宽一直受到人们的广泛关注 本文提出了一种新颖的小型宽带圆极化的微带天线, 其形状像 8, 通过 CST 对提出的天线建模并仿真, 通过优化该模型可使其带宽达到 1.053GHz, 在工作范围内某一频点上增益高达 9.2dB,

More information

Microsoft Word - Differential Circuit Comparison App note_B.doc

Microsoft Word - Differential Circuit Comparison App note_B.doc Sisonic and ECM in Circuits Date: Author: 20.Jan.2005 Bill Ryan Benefits of Circuits amplifiers are desirable to use in audio applications, especially those where signal levels are very low such as those

More information

Introduction In this tutorial, a dipole antenna will be constructed and analyzed using the HFSS simulation software by Ansoft. The example will illust

Introduction In this tutorial, a dipole antenna will be constructed and analyzed using the HFSS simulation software by Ansoft. The example will illust Ansoft High Frequency Structure Simulator Tutorial The Dipole Antenna April 2004 Introduction In this tutorial, a dipole antenna will be constructed and analyzed using the HFSS simulation software by Ansoft.

More information