Ku-band Microwave Amplifier Module

In this dissertation, the aim of research on high performed Ku-band microwave module is done. Three microwave amplify module are designed. They're the low noise amplifier module, the 11-17 GHz wideband amplifier module and the 14-15.8 GHz amplifier module.The amplifier's main parameters and their effect on performance are described. Three design theory of microwave amplifier is analyzed: maximal gain design, minimal noise figure design and the high power design. The normal Electro Magnetic Compatibility problems are introduced. And the ways how to solve are summarized.A detailed design of Ku band low noise amplifier module is described in the chapter 3. In order to achieve the design goal, three cascade amplifiers are designed base on the theory of the system's noise figure. And the electromagnetism simulation software ADS is used. The theory and the simulation about the suitable DC bias circuits and the optimal bypass microwave circuits are analyzed. After all, the difference between the simulations and the measurement result is discussed.An one input, two output wideband middle power amplifier module is described in The Design Of 11-17 GHz wideband Power Amplifier Module. The best whole module's scheme is chose after evaluating the different ones. Because there are many devices in the module, the EMC problems of the module are discussed in overall layout process. And some method is given to solve the problems.An middle power amplifier module with the power detected and second output is described in The Design Of 14-15.8 GHz Power Amplifier Module. The suitable whole scheme is chose base on the module's function and demand. After introduced the basic theory of the directional coupler, the simulation and design process is depicted. With summarized the mainstream power detected methods and discussed their advantage and disadvantage, the diode detected method is chose. The difference between the simulations and the measurement is discussed finally.In short, in this dissertation the researches include low noise amplifier (LNA), power amplifier (PA), power divider, directional coupler, detector, power detector and so on. In this dissertation, those technologies are studied in detail and successfully applied, which might be helpful to further application of microwave amplify module and microwave circuit design.