Question

Paper Design only!!

output matehing In this assignment you are to design and implement in ADS two networks: an LC matching network and a microstrip short-circuit stub matching network. These matching networks between a 50 termination and an RF transistor with output impedance ZouT 25 + j50 Thus we require the matching networks transform a 50 2 termination to an impedance of Z, 25-50 at an operating frequency of f 1 GHz, intended to obtain a conjugate match, for maximum power transfer are shown in the figure below as _ L Output Matching Network Term Z-25+j*50 Ohm Term2 Z-50 Ohm ZoUT 25j50 2 Z =25 - j50 + Design and sketch both matching networks, and implement your designs in ADS. For the stub network assume a microstrip substrate with dielectric constant e, = 9.6 and height h 0.5 mm In both cases, sweep in frequency in the range 0 sf2 GHz and use ADS to plot the resultant Smith chart display, and plot the forward transmission rectangular plot. Use markers to verify that the expected values load reflection coefficient, S1 on a coefficient, dB(S[2.1]) on a are achieved at the design frequency of f 1 GHz. Submit all calculations and ADS circuit diagrams and output

Answer 1

L L1 L-9.736031 nH R=1e-12 Ohm ormm Term Term Term1 Num 1 Z=25+j*50 Ohm Term2 Num-2 Z=50 Ohm C 1 C=4.113942 pF S-PARAMETERS S_Param Start-0 GHz Stop=2.0 GHz Step= 0.1 GHz Display Template disptemp1 "S_Params Qu ad_dB_Smith" Disp Temo 1

S-Parameters vs. Frequency Input Reflection Coefficient ADS ADS 10- 20 02 08 04 0.8 frea. GHz freq (0.0000Hz to 2.000GHZ) ADS -10- -12- 0.8 0.8 10 1 1 2 0 freg, GHz frea (0.0000HZ to 2.000GHZ) S(1,1) B (S (1,1

MLSC TL4 Subst="MSub1" W 0.490204 mm L 10.596600 mn MSub MLIN TL3 MSUB Subst="MSub1" MSub1 W 0.490204 mm Term H 0.5 mm Term L-34.828600 mm Term 1 Num=1 Z=25+j*50 Ohm Term2 Num=2 Z=50 Ohm Er 9.6 Mur 1 Cond 1.0E+50 Hu-3.9e+034 mil T 0 mil TanD 0 Rough=0 mil Bbase Dpeaks= S-PARAMETERS S Param SP1 Start 0 GHz Stop-2 GHz Step 0.01 GH z Display Template disptemp1 "S_Params Quad dB_Smith" Disp Temp

S-Parameters vs. Frequency Input Reflection Coefficient ADS 30- 40- 20 02 14 0.8 freq, GHz freg (0.0000Hz to 2.000GHZ) ADS L0- 80- 80- -100- 120 20 freq, GHz freq (0.0000H2 to 2.000GHZ) S(1,1) B(S(2,1)

Using Madeling Lc L-9.736 nH Team2 Zond Ct 4.11PP Son 25t503 T71 アアプケ and impleented ploted. A The duign abans Circnit and the Tesnd is ADS i Sod. SI 17 Mierostip short- cirait stub Matcn Using W 0.49 mm L 34.82 mm Zond Team2 w O.49mm LA 10.59 mM So 25+ S0j T1 duigned and mplunted Te snlt is plted. At1y e abone cirawlt is nd thr :1GM ADS using Su is 38ds the