GPS GPS GPSGPS GPS GPS (Globl Position System)(Antenn)(Dielectric Constnt) Q(Dielectric Qulity Fctor) GPS 1995427 GPS GPS 24 327 115 GPSL1L2 1575.42 MHz1227.6 MHz 1575.42 MHz GPS GPS GPS ε r (Polriztion) 12 14 http://www.mterilsnet.com.tw
() (b) (c) (d) (ε r ) α 1/ ε r Q =/Q Q=1/f =+ f = ε r /2 () (b)(c) (d)e GPS 1-1 GPS Q Q 1, GPS GPS 25mm 25mm 15-25 19mm 19mm 35-4 13mm 13mm 8-1 QQ Q Q Q=2π 2πW o PT=ω o W o /P W o = P= ω o = T=2π/ω o GPS b f 1 f 2 f c Q http://www.mterilsnet.com.tw 14 13
(1)(Conductor Qulity Fctor), Qc Qc = ω W Pc Pc (2)(Dielectric Qulity Fctor), Qd tn δ = σ ωε ε r Qd = ωow P = ωε E2 Dv σ E 2 dv = ωε σ = 1 tn δ Pd (3)(Rdition Qulity Fctor), Qr (Cvity) Q Q r = ωοw P r P r P o =P c +P d +P r Q o = ωοw P c +P d +P r Q o Q 1 Q o = P c ωow + P d ωow + = 1 Q c + 1 Q d + 1 Q r P r ωow Q Q τ f f/f=τ f T f= T= (1)α α L/L=α T L= L= α= (2) ε r τ ε ε r /ε r =τ ε T ε r = ε r = T= τ ε = τ f ατ ε τ f =-α-(1/2)τ ε α τ ε 14 14 http://www.mterilsnet.com.tw
τ f GPS Qτ f (t r ).35D r ~.45D r D r f o f o =8.533/(ε) 1/2 (π/4) 1/3 (D r 2 t r ) 1/3 D r = t r =.35D r t r.45d r f o =(GHz) ε= K Q τ f ( ppm / C) (GHz) (Mg.95 C.95 )Ti 21 3 16, B(Mg.33 T.67 2 1 35, 4.4 BTi 4 O 9 38 4 9, 15~2 B 2 Ti 9 O 2 39~4 4 9, 2 BO-4TiO 2 -.1W 35 6 8, B(Zn.33 T.67 29.5 12 15, B(Zn.33 Nb.67 41 9.5 9,15 31 Sr(Zr.33 Nb.67 4 9.2 4, -39 B(Mg.33 T.67 25 1.5 16,8 4.4 B(Zn.33 Nb.67 - B(Zn.33 T.67 39~4 12 9,2~15, ~28 B(NiT -B(ZrZnT 3 1 1, 3 B(Zn.33 Nb.67 -.655r(Zn.33 T.67 4 9 3,5 (Zr.8 Sn.2 )TiO 4 38 7 7, (CSrB)Zr 32~29 11 3,~2,.4 BO-Sm 2 -TiO 2 75~92 2.2-2.4 2,3~3,79-17~21 (B,Sr)O-Sm 2 -TiO 2 8 3 3,7 BO-PbO-Nd 2 -TiO 2 88 1 5, BO-4TiO 2 -L 2 -Sm 2 8 1.15 6,25 2 (Pb x C 1-x )Zr 94 3 12-9.8 http://www.mterilsnet.com.tw 14 15
5% (f om ) C new C new =(ε) 1/2 (π/4) 1/3 (D 2 r t r ) 1/3 f om f om = t r t r new =C 3 new /(ε)3/2 (π/4)d 2 r f od ) 3 f od = t r new.35d r ~.45D r t r new t r new GPS GPS TM GPS (Potentil)Ψ E=-jωµ o Ψ mn z, GPS H= Ψ mn z () (b) z y x b h () h (b) z zz ε r f= ck mn 2πε r,c= 1 ε µ ()Ψ mn k mn Ψ mn = cos mπy cos nπχ b k mn = mπ + nπ b >b(m,n)=(1,) = λ 2 ε r (1) GPSl.7542MHz 1.23MHz GPS 3dBNF 3dBGPS Axil Rtio (2) GPS bf 1 16 14 http://www.mterilsnet.com.tw
f 2 f c bf c f 1 f 2 9 f=f 2 -f 1 f b=b QQ b =1+ 1 Q S S S S = 1 2Q (3) (/b) 1.23MHz 1MHz Ground Plne GPS GPS GPS GPS 1575.42MHz 5ohm1MHz 25.4 25.4mm 2 Smith 19 19mm 2 Smith GPS -5-1 -15 db -2-25 -3-35 db[s(1,1)] -4 1.55 1.56 1.57 1.58 1.59 1.6 Frequency (GHz) 25.4 25.4 mm 2 with 7 7 mm 2 ground-plne GPS jx Center Frequency 1575.42 MHz b, b f 1 f 2 f c f Bndwidth (t 1dB Return Loss) 1.23 MHz Gin t Zenith +3.5 dbic Impednce 5Ω Polriztion RCHP Frequency Temperture Coefficient ±2 ppm/ C http://www.mterilsnet.com.tw 14 17
CH1 S11/M 1 U FS CH3 S11/M LOG * Cor Cor H1d H1d 25 Oct 21 9:7:25 CH1 S11/M 1 U FS 1:52.633Ω -7.4219Ω 13.543pF 1.5834 GHz * PRm Cor H1d 1.5754 GHz 1.5834 GHz 16 Apr 22 7:58:54 1:5.424 Ω.879 Ω 8.8791 ph 1575.4 MHz 1 db/ref db 1: -47.251 db 3 CENTER 1 575. MHZ 1 3 4 1 1 4 SPAN 8. MHZ Smith25.4 25.4 mm 2 with 7 7 mm 2 3 CH1 Mrkers 3: 68.133 Ω 34.484 Ω 1.5616 GHz 4: 4.46 Ω -28.375 Ω 1.58557 GHz CH3 Mrkers 3: -1. db 1.5616 GHz 4: -1. db 1.58557 GHz ground-plne CH1 Mrkers 3:96.242Ω -328.13mΩ 1.57578 GHz 4:35.232Ω -23.77Ω 1.59268 GHz 19 19 mm 2 25.4 25.4 mm 2 with 7 7 mm 2 groundplne with 4 4 mm 2 groundplne 27 27 E-Totl t phi=9 E-Phi t phi=9 E-Thet t phi=9 33 3 24 21 Antenn Gin (db) -15-1 18-5 3 15 5 6 12 9 1 db[s(1,1)] -5-1 -15 db -2-25 -3-35 -4 1.55 1.56 1.57 1.58 1.59 1.6 Frequency (GHz) E-Totl t phi= E-Phi t phi= E-Thet t phi= 33 3 Antenn Gin (db) -1-5 3 6 9 5 4 24 12 21 18 15 CENTER 1.584 GHz SPAN.4 GHz Smith19 19 mm 2 with 4 4 mm 2 ground-plne 1. 2. Q3. 4. 5. GPS 1. 2. 3. 4. 5. 6. GPS 19 19 mm 2 with 4 4 mm 2 ground-plne 911 SirfRF Bse BndGPS 18 14 http://www.mterilsnet.com.tw