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Matching networks part 2

Matching networks part 2 - _—<_—~_—_g.~(a Impedance...

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Unformatted text preview: ....__.___.____ { __—_____.___.<_—~_____—__.____g____.____.~_ (a) Impedance transformations displayed in Smith Chart =975nH CL 509 L Rf: 2.6 pF OHH% 509 C: RS: 0) ( (b) HPF LN: Resulting matching networks Figure 8-8 Two design realizations of an L-type matching network. Wflfiww‘.M—_M____~____T_ Circuit in Figure 8—8(b) Input reflection coefficient [Pi 0.5 1 1 5 Frequency f, GHZ (a) Frequency response of input reflection coefficient 2 2.5 -3 Circuit in rive» U14>UI Circuit in / Figure 8-8(c) Transfer function H, dB 1 .5 Frequency f, GHz (b) Transfer function of the matching networks 2 0.5 1 #ME x092 F927 BOTH NWD-{ULS O/UU/ 78:. 5g (mg/«590 A5 ego/away“ C/IZCu/TS CAM CHM/HS w/ 7Q 7Q Bu) awe, 6w ,— .' GEL FM” 0/: My N, 3 055 am. swam PEEPDAJSE NBA/l 743. OF MM; 7Q BPF gum LOADQO ((3%) M Aflz‘filk/6) flew/VANCG P72 QEUEWC S/fllLA/UTV 2/”: Ti 2'0 - 4L9 W26” flu, {] —dL/RQC._(,> MW_‘_’._..,H : imwflw / _fl_fl KL!” JjCLP / *dwflucu’ / / db'fwckg 0—LWW'W”:Z ; R Le ' J W (SC L? F -——T“ 2/2 / + wL/ZSCL: ZMP «Lew-P j LP “5: '2' 2 : pt-p z P / w. “MW” [e a m L r ( #(90‘9E Cw ) QLP W Le u /+ 4,2 2‘4, CAP 60 j‘ / ZINP ‘ 2N5 KL- : w CL —- f 2 @ £3; L w ‘ 37 WW7“ 2 /r (A M ¥ X " + j m \/ \‘AD 15 9 a “" 3”" W 8 § IN x GM x LN k 3. ............ “MLLWQ ’ p- _ 15.. 1/N ; lN 2m #5 v a * WL ‘ to“ L: S 5 Z ’ kl : |rdeva fl" ’ 6N +(deN3 deN cw + i VS : is 2m I‘M» éCULN : 7 L z Z/TH *6“ > __ L + MIL” 6'“ .- w U 625 + de— 4wa z ._,,...__.. I 4* «0“ Lu GA K5 : LQZL: (“J L : LN “W L /+ mm: )+ mfg» ———————? V-r -.~ ‘1 - “Kn VT : Lila; V5 MMMMMMM W I ml: \ R5 Q51; a /Z5,/ I WM ‘‘‘‘ n Vb I: 2413/“ gt.” "'"CT 125.: VT “Zn” <(j‘SS-PF 2 , 62.511 am: WNW k 0 é/ & : M79, : WORTC 3 *"J" = ' L 6w /X¢/ /7 /- /V / .-. woe/v»; VOL/T " b RL + m \/\o \jwf \[ CH W9 :w7 firm?) i" M" : j {Vau7’" 20 f ’ 2 /o _: " ‘ 05, {VS ( 2 038 + 20 5/V5/ 39794 Equivalent / filter _ Circuit in ‘1 Figure 8-8(c) Transfer function H, dB 1 .5 2 Frequency . f; GHz (b) Frequency response of the matching network compared to the equivalent filter response @L: 0.691: 3-5,— £=/6Hi 8.95,) ,,,,,,,,,,,,,,,,,,,,, WWW 3w = l, 63 6W2 cease WM.Wfl.-WW. Figure 8-10 Comparison of the frequency response of the L—type matching network and an equivalent bandpass filter. a) we Mil/é MW 70 “fifiMATE figs/M55 67F WW AND 4/0 5 5'377MA770IO 0}: 73.00, *F9C0MPi/Tflflbzt) Is CDMM-«e’lc (780/005) """""""""" U56 Noam, Gag/Ty [ach fax/awe» Mao/vb SC. 7D WU, Mom.“ CAN 6%; (ix/dfléssm W/Le H r //U A C(flCu/T} EJAC Mom, (0A I B WM/ILLBL ADM/Tme )2, 6/ +0; ’0 Mag/{)5 0/5 HAM/é ,4 (Q1 AT CAM/1‘ N006 {UWCH Wit/72,6 67 : /Xs/> /6,o/ '1 M at ————————— £5 67F 6“ C W MAX/MUM @n [5 AT (>0ng .8 2=/ ’01 ['23 a”: /./33/;/.23 " Q“ ; mm WWWS Paoewm @6044: Qt?" Q; 772“? PM AW L’ Hyman}: MM. 079% Alma/L149 537W“? @L. 2‘ Q’LWHAx CAM 0e“ 05% 79 com/We“ Nmoa/cs, ____________ ___.___ _.__________________________._ __ ~_____,_____,__.___._...______ ,___.____.._¢_-fl Figure 8-11 Constant Qn contours displayed in the Smith Chart. (a) Impedance transformation in the Smith Chart Rszsog L:0‘8nH' LL=3.18nH RS=509 C23.54pFLL=3.18 nHV Resulting matching networks Figure 8-12 Two L-type matching networks for a 50 9 source and a ZL = (25 +j20)§2 load impedance operated at a frequency of 1 GHz. 84 DES/6N Two L A/E7UM/Cf Mf MATCH 2L12§+J20 .(L ‘To A sofl goo/“é (€3/6fé D gal/MING (9., o F W31! NW‘D/C/Cj} 50/46“? L752 gAfl/DUW To flaw? fl @33on. (flw’ W- L'MM ) \é i251). §3Luflop , Fflom a6 8-7 a) b M “W Z 1, ' 0 S + & 0 LI 3 7,31%”; “"0 E 3005.7(1; £121-: y QL GA 16% aH"_W'*7"*"W—m7*_T———_T'fl“‘M—g—“T-mef'm'fl‘ _8 ................. _ .1 ______________ .. r. ' , ....... . _._r- ...................... ._T .............. m... Figure 8-12(b) / ' . ’ r / a I \O —-‘ -—10L Figure 8—12(c) 1.. ,1 . _ . . _ . . _ . _ . . _ o . . _ . . _ . . . . _ ~ . . . _ . . . . _ _ . . . _ _ _ _ _ . . _ . . . _ _ . . . . .— .L N Transfer function H = Vo'm/ VS, dB .L 9’ l 4;. L. 01 0 0.5 i 115 2' 2‘5 3 3,5 4 Frequency fi GHz . - 27f; 8w ’ Q = 2 6/742 _ AU 2 257/7: [39; 8077/ (Assame’ 5VMMW/é[email protected]€) ACTUAL} & (SD 1: 2,5 6/712 Figure 8-13 Frequency responses for the two matching networks. Far; BROADBAUD MPUCMWODE we 0mm Low é) Fm: osmocAm DEB/Gus CUE 7363/sz /7‘7(§H 6? “7‘0 amwATt HAflMomcg, L» put-{WORKS pmvubé IUD COMM. cum Q“ "‘ - e ILK WWWWC/A/d A Wflfl ELL/WET” — / 0» Pk NCTwD CAN é/ue us WT Ame/77 Figure 8-14 General topology of a T-type matching network, DESI 6/0 7" MN '7‘0 'T'flA/USFDKN 2L: (gov/3o .n. //U7"O A“: /o +dZOJL 72> H74“: A QH'MAX: COMPc/flf CoMPo/Ue-ruT; F04 Mme/mus (a? /: /éH% 0M?" smuwou; H/CWL (Q "’ WMQOQJ Ea) Figure 8-15 Design of a T—type matching network for a specified 0,, = 3. Z' /S flmcflutj 7, POINT A an r‘ : {‘L 23 )5 CONNECTE‘O So W ‘ f‘ ; M r :3 “Z 3 IS CONUEZTEO TD PLACE' 100/40! .3 on n L3: 7.85 nH Cl: 8.72 pF [*9 I C2: 3.53 pF Z1. 1: E Figure 8-16 T-type matching network circuit schematics. 8% Damn BMADOAND WWW/’7?“- (fl/~MU) TOWANSFDLH ELa/o-d/o To Z/N: 20+d40 flux/ou/é' LowEST Panes/OLE @k, Fur fGDZVGs/fi bow/“DON: CAM/m JPQODOCE Q“ swung/i MN M MGWQV G) A 7" 2 AND 27L}. Q PLOT Comsmm' CoNDdCWM/CE C(RCLE @ MM“- 3= 8,» W'raasc—‘zmou Pom/’7” B @ END //t/7?:Q.S€C7>04J 0/: {323,} Am; MUST I‘@ B CO/USDOUT CouDucnmLt' 79/75 {3 LED/MT" A @ Foccoa) Pam/'7’ A 6ACK To 2; C2, 3 ( NW” L I g? EL A ,,,_V,-fi-_w___..l__r.. C2 = 1.65 pF L3 L1 1.66 nH 1.31 11H 2. 111 Figure 8-18 Pi-type matching network configuration. pm? (wow) AU L, NW0“ flC/7‘7WE 9 ...
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