iv

Field Effect Transistors, 79

Problems, 86

2 MATCHING NETWORKS AND SIGNAL FLOW GRAPHS

2.1 Introduction, 922.2 The Smith Chart, 932.3 .The Normalized Impedance and Admittance

Smith Chart, 1052.4 Impedance Matching Networks, 1122.5 Microstrip Matching Networks, 141

Microstrip Lines, 141Design ofMatching Ne!works, 152

2.6 Signal Flow Graphs and Applications, 175Applications ofSignal Flow Graphs, 180

2.7 Power-Gain Expressions: AlternateDerivations, 185

Power-Gain Expressions in Terms ofSpparameters, 192

2.8 VSWR Calculations, 194Problems, 200

3 MICROWAVE TRANSISTOR AMPLIFIER DESIGN

3.1 Introduction, 2123.2 Power Gain Equations, 2133.3 Stability Considerations, 2173.4 Constant-Gain Circles: Unilateral Case, 228

Unconditionally Stable Case, ISi;1 < 1, 231Potentially Unstable Case, ISi;1 > 1, 234

3.5 Unilateral Figure of Merit, 2383.6 Simultaneous Conjugate Match:

Bilateral Case, 2403.7 Operating and Available Power-Gain Circles, 247

Operating Power-Gain Circles, 247Unconditionally stable bilateral case, 247Potentially unstable bilateral case, 252

Available Power-Gain Circles, 257Unconditionally stable bilateral case, 257Potentially unstable bilateral case, 260

3.8 Constant VSWR Circles, 2603.9 DC Bias Networks, 273

BIT Bias Networks, 273GaAs FET Bias Networks, 280

Problems. 283

Contents

92

212