Introduction

This book presents methods for the design of the main microwave active devices.

Chapter 1: Amplifiers

The first chapter focuses on amplifiers working in the linear mode. The authors present the problems surrounding narrowband and wideband impedance matching, stability, polarization and the noise factor, as well as specific topologies such as the distributed amplifier and the differential amplifier.

Chapter 2: Power Amplifiers

Chapter 2 concerns the power amplifier operation. Specific aspects on efficiency, impedance matching and class of operation are presented, as well as the main methods of linearization and efficiency improvement.

Chapter 3: Frequency Transposition

Frequency transposition is the subject of Chapter 3. The author presents the operating principle as well as the different topologies using transistors and diodes.

Chapter 4: Oscillators

Chapter 4 is dedicated to the operation of fixed frequency and tunable oscillators such as the voltage controlled oscillator (VCO) and the yttrium iron garnet (YIG).

Final Chapter: Control Functions

The final chapter presents the main control functions, i.e. attenuators, phase shifters and switches.