Ka Full-band Millimeter-wave Amplifier And Q-band Frequency Multiplier Developed

The solid-state millimeter Amplifier,millimeter frequency multiplier are the most important components in T-R system. The millimeter Amplifier,millimeter frequency multiplier in this paper is from a project, and are used by a institution.In chapter two we describe how to use a coaxial probe to make a waveguide to microstrip transition and realize the transition for the Ka band and Q band. Then we can make millimeter Amplifier and millimeter frequency multiplier with them later.In chapter three we introduce the theory of the millimeter Amplifier and make a Ka band millimeter Amplifier with MMIC bought from abroad. In this course, we analyse the performance of the MMIC, the design of the metal cavity and the DC bias techniques. Through the test, we achieve the target as follows: frequency range: 26500-40000GHz, gain: G≥30dB, gain flatness:ΔG<7dB, noise figure: N_f <8dB, P_-1out>6 dBm, the input voltage:8V. With the coaxial probe, we make the millimeter Amplifier pressurize.In chapter four, we design and make a millimeter frequency fourfolder with the MMIC from abroad. And we find that below 48GHz, it can realise the target: when input power is 10 dBm the output power is higher than 10 dBm and the wave we do not want is less than -20dBc. But when the frequency is above 48GHz,all the targets are very bad.In chapter five, we realise the millimeter frequency doubler with the balance structures of circuits. In this course, we first study all kinds of balance structures of circuits, then CAD techniques(ADS and CST) is applied to the design of the doubler. At last, we machine the doubler and test.At last, we propose some advice to improve the millimeter frequency multiplier.