本文介绍一种采用阶跃变容管的X波段O—π调相器,它具有结构简单,损耗小,开关速度快,激励幅度低,调正方便等优点,适合用于单频小功率连续波编码调相。 本文给出了调相器O—π调相的数学表达式以及等损耗计算公式,同时介绍一种简便的调正方法及激励器线路。 一、阶跃变容二极管等效电路 In this paper, an X-band O-π phase shifter with step varactor is introduced, which has the advantages of simple structure, low loss, fast switching speed, low excitation amplitude and convenient adjustment. It is suitable for single-frequency low-power continuous Wave encoding phase modulation. This paper gives the mathematical expression of phase modulator O-π phase modulation and equal loss calculation formula, at the same time introduces a simple method of adjustment and driver circuit. First, step varactor diode equivalent circuit