Ku-band Dro Design

The radar, navigation, electronic countermeasures, microwave communications, space technology, military applications, in civilian microwave communications, satellite communications, direct broadcast satellite television, civilian radar, navigation, and other civil applications, the source of microwave solid-state occupies an important position . There are a number of ways on microwave solid-state sources, and dielectric resonator, with its unique advantages (small size, Q value, low cost) is receiving increasing attention.This paper describes the system used in microwave solid-state sources, phase-locked loop, briefly introduced the basic theory of phase-locked loop, compared to the three kinds of lock-in program, pointing out advantages and disadvantages of various programs. And highlight one of the sampling phase-locked, such as pulse-forming circuit, the working principle of lock-in program selection and sampling phase-locked phase noise reasons. DRO is discussed in detail the basic theory, such as the working mechanism, classification and analysis. This is analysis of dielectric resonator and micro-strip line coupling - magnetic coupling.This article focuses on the three forms of media oscillator circuit, that is, reflective DRO series and parallel feedback dielectric oscillator, as well as Push-Push type DRO. Three forms of media oscillation circuit, the theoretical basis for this article from their start with detailed simulation of the circuit design. The first two forms of media oscillation circuits, draw a circuit diagram, processing of the kind, and debugging of the circuit, measuring the results. The results verify the correctness of the theory.?...