教育部九十二學年度大專校院通訊科技專題製作競賽

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梧宫
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1 Design of UWB fully planar quasi-ellipse monopole antennas 老李烈參, Tel: (02) , Fax: (02) , 力 FCC 3.1GHz ~ 10.6GHz UWB 輻率輻 Radiation Pattern 利來狀 S 11 利來輻 E-plane Main Beam 0dB 3 ~ 8 GHz 拉 3 ~ 9 GHz H-plane 3 ~ 9 GHz 輻 S 11 3GHz ~ 11.2GHz -10dB 量良 (UWB) 1. UWB Ultra Wide Band 10 離數里離領兩力藍 Bluetooth IEEE /a/b/g 54 Mbps/11 Mbps/22 Mbps 不率降利不來料來力降率率 1(a)[1] 量 1(b) [1] 不料量不率量離率率聯 FCC Federal Communication Commission 2002 年 2 14 了 FCC 7.5GHz 3.1GHz ~ 10.6GHz [1] 3.1GHz ~ 10.6GHz 利量易來 UWB 利立來輻狀 S 11 輻 1

monopole[7] 6 [8-10] 7[11] 8 狀 [10, 12] 輻 1 來流 [11] 2 plate 來 [12] 2 monopole 不 [13-17] S 11 輻利來 S 11 FCC 率

2 a b 1 ab 量 2. 量易易 UWB 都立 (2.5D) 更更易路 UWBS 11 輻兩論若 S 11 1 shorting port[2] 2 trapezoidal [3, 4] 3 切 trimming [2, 5] 4 六 [6] 5 monopole[7] 6 [8-10] 7[11] 8 狀 [10, 12] 輻 1 來流 [11] 2 plate 來 [12] 2 monopole 不 [13-17] S 11 輻利來 S 11 FCC 率輻利狀不 S 11 R=8mm 量 E-plane 輻不率 3 ~ 8 GHz 來率利見 p.7 狀輻 E-plane main beam 0dB 3 ~ 8 GHz 拉 3 ~ 9 GHz H-plane 3 ~ 9 GHz 輻 S 11 3GHz ~ 11.2GHz -10dB 量良 3. 理 3.1 [18] 行 Traveling-Wave Wire Antenna 螺 2

3 Helical AntennaBiconical Antenna Monoconical Antenna Discone Antenna Sleeve Antenna 狀 Spiral Antenna 數 Log-Periodic Antenna 不 [19] 不 Large Input Impedance Bandwidth 輻 Radiation Pattern 不輻更狀易易不狀不不易諸利狀狀來狀來 3.2 兩 Feed PointGap 流 H Φ 來量 E θ jβr 1 1 H 0 jβr 1 1 H 0 jβr e 1 = ( e ) = ( jβe ) = ηh 0 (1) jωε 4πr sinθ r jωε 4πr sinθ 4πr sinθ (1) E = ηh 3.3 θ φ TEM 來行 Compact 率 Low Power 良利 Method of Image [20] Ground Plane 來度 λ/2 λ/4 輻輻率了 Narrowband Intermediate Bandwidth 狀 Volcano Smoke AntennaBroadband 2 a b c [21] 不狀良率狀不年來兩狀 [22] 3 3 不 FCC 3.1GHz ~ 10.6GHz 輻更 Omnidirection E-plane 不 3

4 a b c 2 a λ/4 b c 狀 a b 3 a 狀 b 狀來易量易路更狀 S 11 FCC UWB 3.1GHz ~ 10.6GHz 輻 3.4 利 [6] 來 VSWR 2 率 F L [6] 不來 g Feed Gap 參數 g 輻金 Radiation Metallic Patch Ground Plane 不參數狀 90 度力 4

5 3.5 率 F L - 率 VSWR 2 率 4 [6] 來利 F L L = 0.24λF 2 L F = r = L 1+ r L L + r 3 L ( L r) λ = L = = F L L + r 率 F L F c = = = L λ L + r L + r 5 F L GHz L r mm 5 度 g 若參數度 5 F 72 = L L + r + 6 g L r g mm 6 省度 2π 4π 來度度例不 F L 列 1[17] 利 90 度狀 5 利 IE3D [23] S 11 6 力參數 S 11 輻 4 立 r 度 L 5

6 1 F L mm mm mm F L GHz a b c 兩度狀狀 0.8 FR4 數 4.4 來行度狀狀兩行度不略例狀狀不兩行略度例狀數狀數狀數來 6 5 a b c d 90 度 ef 6

6 狀 S 11 3.6 IE3D moment method 來數切 cell 來量理利兩 1 利 16 來 2 ground plane 利兩流切流流金了兩數 1 R 2 g 3.1 GHz ~ 10.

7 6 狀 S IE3D moment method 來數切 cell 來量理利兩 1 利 16 來 2 ground plane 利兩流切流流金了兩數 1 R 2 g 3.1 GHz ~ 10.6 GHz S db Random Method 數 500 數良 R 8mm 11.13mm g 0mm 0.66mm 10 S 11 輻不 3 GHz ~ 7.5 GHz 3 GHz ~ 8 GHz 16 a 7 a a cosα 7 a b b sinα 7 b 來狀 9 a a b 兩數數 R 了數 7

8 a a cos b sin R R b g g W W L L mm a b 7 a b 輻更易 GHz ~ 10.6 GHz S db 2 輻 = 0 broadside 0 db 2 輻不數 500 數 b S 輻輻 E-plane x-z H-plane y-z 輻 3GHz ~ 8GHz 3GHz ~ 9GHz S 11 落狀輻 E-plane main beam 30 度 150 度 E-plane 0dB 3 ~ 8 GHz 12 3 ~ 9 GHz 14 H-plane 率 3 ~ 9 GHz 輻 15 利類輻 S 11 10dB 3.1GHz~ 10.6GHz 8

9 a b c d e f 8 a b c de f a b 9 a ( mm ) b 不 mm S 11 9

10 10S S 11 10

11 12 輻量 Measurement E-plane at GHz 11

12 13 輻量 Measurement H-plane at GHz 12

13 14 輻量 Measurement E-plane at GHz 13

14 15 輻量 Measurement H-plane at GHz 14

15 5. 論力 FCC 3.1GHz ~ 10.6GHz UWB 輻率輻 Radiation Pattern 利來狀利兩 1 利 16 來 2 ground plane 度利兩數來數了數輻 S 11 3GHz ~ 11.2GHz -10dB E-plane main beam 0dB 3 ~ 8 GHz 拉 3 ~ 9 GHz H-plane 3 ~ 9 GHz 輻量 UWB 利量輻路量 S 參數參料 [1] David G. Leeper, Wireless Data Blaster, Scientific American, 2002 May [2] M.J. Ammann, The pentagonal planar monopole for digital mobile terminal; bandwidth considerations and modeling, Antennas and Propagation, 2001, 11th International Conference on(iee Conf. Publ. No. 480), Volume: 1, April 2001 Page(s): vol.1 [3] J.A. Evans, M.J. Ammann, Planar trapezoidal and pentagonal monopoles with impedance bandwidths in excess of 10:1, Antennas and Propagation Society, IEEE International Symposium 1999, Volume: 3, July 1999 Page(s): [4] Z.N. Chen, Impedance Characteristics of Trapezoidal Planar Monopole Antennas, Microwave and Optical Technology Letters, 2000, 27, (2), [5] M.J. ammann, Zhi Ning Chen, Wideband monopole antennas for multi-band wireless systems, Antennas and Propagation Magazine, IEEE, Volume: 45 Issue: 2, April 2003 Page(s): [6] G. Kumar, K. P. Ray, Broadband Microstrip Antennas, Artech House, Boston,

16 [7] M. Hammoud, P. Poey, F. Colombel, Matching the input impedance of a broadband disc monopole, Electronics Letters, Volume: 29 Issue: 4, 18 Feb Page(s): [8] N. P. Agrawall, G. Kumar, K. P. Ray, New wideband monopole antennas, Antennas and Propagation Society International Symposium, 1997Digest, Volume: 1, 13-18July 1997 Page(s): Vol.1 [9] N. P. Agrawall, G. Kumar, K. P. Ray, Wide-band planar monopole antennas, Antennas and Propagation, IEEE Transactions on, Volume: 46 Issue: 2, Feb 1998 Page(s): [10] L. Desclos, M. Madihian, J. M. Floch, T. Ohsawa, GHz optimized antennas for indoor wireless LAN applications, Wireless Applications Digest, 1997, IEEE MTT-S Symposium on Technologies for, Feb Page(s): [11] E. Antonino-Daviu, M. Cabedo-Fabres, M. Ferrando-Bataller, A. Valero-Nogueira, Wideband double-fed planar monopole antennas, Electronics Letters, Volume: 39 Issue: 23, 13 Nov Page(s): [12] P. V. Anob, K. P. Ray, G. Kumar, Wideband orthogonal square monopole antennas with semi-circular base, Antennas and Propagation Society International Symposium, 2001 IEEE, Volume: 3, 8-13 July 2001 Page(s): vol.3 [13] Kin-Lu Wong, Yi-Fang Lin, Stripline-fed printed triangular monopole, Electronics Letters, Volume: 33 Issue: 17, 14 Aug Page(s): [14] J. M. Johnson, Y. Rahmat-Samii, The tab monopole, Antennas and Propagation, IEEE Transactions on, Volume: 45 Issue: 1, Jan Page(s): [15] J. M. Johnson, Y. Rahmat-Samii, Wideband tab monopole antenna array for wireless adaptive and mobile information systems application, Antennas and Propagation Society International Symposium, AP-S. Digest, Volume: 1, July 1996 Page(s): Vol. 1 [16] 林,, 論, 立, 2003 年 6 [17],,,, 2003 年 11 [18] Warren L. Stutzman and Gary A. Thiele, Antenna Theory and Design, Second Edition, John Wiley, New York, 1998 [19] M. Y. Lu and C. S. Shi, A high-quality ultra-wideband omni-direction antenna, Electromagnetic Compatibility Proceedings, 1997 International Symposium on, May 1997, pp [20] D. K. Cheng, Field and Wave Electromagnetics, Second Edition, Addison Wesley, 1989 [21] John D. Kraus and Ronald J. Marhefka, Antennas For All Applications, Third Edition, McGraw-Hill, New York, 2002 [22] T. Taniguchi and T. Kobayashi, An Omnidirectional and Low-VSWR Antenna for the FCC-Approved UWB Frequency Band, Antennas and Propagation Society International Symposium, IEEE, Volume: 3,June 22-27, 2003, pp [23] IE3D 7.0, Zeland Software, Inc., Fremont, CA,

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