S parameters

S parameters -...

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Unformatted text preview: -_______—————_______._—___———-— 4.4 SCATTE'mUe» PARAMETERS (S- 9ARAMETERS) OPEM/ SHOQT“ C(IZCUIT COMO/flows NEEDED TO DETERMINE 23m. A- AND ABCD’pa/ammém CAN/U07“ 8:; J 6 mum—am MN 2‘ ’ Sfiom‘ CAT“ w/m A w/xeé‘ Fuse—15555 wam/dce' 0F . SUBSW‘U'DAL MACv/u/fl/Uc: M Mew Wendequ ' OPE/U C147” Hm CAflAC/r/c/c“ LoAO/Mcn AT 1711:” TE/QM/NAL. ME WWW. wM/e’ DESCfllPTD/LS 3’ PAIL/3M Efiafls wchUT‘ AM 0 WWW beam? )pPuT/OUTT’LJT Rafi/Elm (Mom wwes. lMLxDadT PowEYL U/Mé (NO/LMAb/a:E‘D) _. ,L, In a“ ' (Vn + 2.: > QEPLQWD ember wwéOUMM/me) ‘ _..——~ bn : - €044.) — — —r"r S 2 ‘0' ,_ REFLECTED PowEQ/‘AT pom! H (1. 2 mat/Jam” PowE/l wAve AT PORTI Oszo 32‘; b; : TX A1— 00111’ 2. ’ PM’ I (1, (11:0 INC. AT 0 5 = bL ._: REF)... @ '2 7.1 -——~ ~ ______________———__ 7.. a‘co HUG; @ Z 312 “- 3’... ,_ TX @ / Q :. L QI:O lNC @ 2" Avmme Penman AT 009.1— I 9— WW" 2 MWz 2 ‘fi 3.1L;- (pl/7M! 3 z 2. E(l'/Sn/J [7 - V‘ b nu “ ' l w " 27/ ‘ 5“ I ' also \lsz = l + (Sui I” lsul 2 P " ikvfl’lz -~ Inc v 2......— “ _,___..—, 2-0 2. U: S” 3 ) ALL Powgfl FAG/(4 THE SOU/ZCG Is Damage-n To Ma- 1. (Now fimflmb) U am- In 2>=’i:~"<.-mwr) 43+?“ FOR Q7. 3 O NO POMe‘fi CAN 3c?” J IQE’NRMED To PO/LT Z (Fl/10M A Rafieznoru). CoNNEcr/Mc» TL. @mMWMaD nun; 77mm CHM/LALTHLISIWQ muggy/1Nng _..W__.,__fl.______...___..________.__.___._._fl_________________fl____.m__.__f_T_____.__.____.___wW ,,,, A Figure 4-15 Measurement of S11 and 821by matching the line impedance Z0 at port 2 through a corresponding load impedance ZL = 20. No ReFLEChON @ PORT 2. 01:0 _. "‘ Zn —:&-o ._ , S“ v m —’ m RL’ 2010325“) b _. 32‘: .1; 2 V} Q\ (If/0 VZ/o' 2461: 04+ £12) 1+: V+= O 2. Z V V1. 5 SZ.\ 3 2 2 = 2”— FothD Wme Vézl VG” amid '2. \l '1- (LwAfLD P501571 S “ L :— CO FD . 2" ’ Val/2. ‘7 GAIN "—0 ‘4.“ a E v:<—- Figure 4-16 Measurement of 822 and 812 by matching the line impedance 20 at port 1 through a corresponding input impedance ZG = 20. '32; : RUI— : aou?’ — %0 E0” 4- E0 gm: _b_._ g 1 OR: 0 011+ EiJ/zfi—Z If: y,“ r— o : 2V— Sn, I =2 €111— Ra/EQSE W)me \/(‘=)2. V62, ’5" Z :{ V\ L RIB/W56 POW“ vat/1 6 7400. FWD 5,pAaAMETms PDQ Tfi‘E $8 A77BUUAT‘OQ' ASSUME NEW/MK /S PLACED/U ATL- w/ 20:50.2. R1 R2 Port 1 R3 Port 2 Figure 4-17 S—parameter computation for a T-network. (a) circuit diagram; (b) circuit for S11 and 821 measurements; (c) circuit for S12 and 822 measurements. FD/L MATCH?!) SVsnm 5”: Sn: 0 ZN: R"? RsUZzi’SO) -=: SO 4.4.3 wa iAm/M MAT/UK A A A B B [91 a a2 19 a2 Figure 4-18 Cascading of two networks A and B. flFO/IUTI? PoweTL (MN/1:” EXP/ZaS/o/US //U TERMS OF INPUT AND DJTPUT PAILTS A MA ,1, A “v 3 I“ "I; 9); blA TA r’fiA A 24 I'LL a1. A 6 b2, '2 Q! B Q 0 B A__ 3 ‘ (Flt 7:"), QZB a; "‘ 5: I [2,: Lu. b * ...
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