Ka-band Vco-harmonic Mixer Components,

This dissertation is mainly on the theory and design of millimeter-wave solid state voltage control oscillator(VCO) and harmonic mixer for phase locking, the research and develop of ka-band millimeter-wave module is accomplished.First is a general introduction of the characteristics of millimeter-wave and its applications. It also gives the motive of the Ka-band VCO and mixer, associated with the subject's requirement and the realistic conditions, according to which a proposal is confirmed that the Gunn diode and the varactor are mounted in the same cavity to fulfill the VCO and an antiparallel diode pair is used to fulfill the harmonic mixer. In chapter 2, based on the basic theory of negative resistance oscillating, we analyses the Gunn oscillator and it's tuning character. Chapter 3 introduces the theory of millimeter-wave harmonic mixer. In chapter 4, we introduce the design process of the VCO and the harmonic mixer, then the millimeter-wave module is realized and the test results are given. Finally, we analysis this circuit and bring out the improved means and the following employment.