L29接口射频同轴开关主要应用于机载低气压环境,传输功率较大的射频信号。产品的微波导行系统直接关系到产品功能的实现。从设计原理、结构仿真优化、产品的测试结构,阐述了一种可以满足耐功率指标为2000W@0.8GHz(高度18000m)的机载大功率单刀双掷射频同轴开关的微波导行系统的设计。 L29 interface RF coaxial switch is mainly used in airborne low-pressure environment, the transmission power of larger RF signals. The product of the microwave guide system is directly related to the realization of product features. From the design principle, the structure simulation optimization and the test structure of the product, a design of the microwave guiding system for the on-board high power single-pole double-throw RF coax switch with the power index of 2000W@0.8GHz (height 18000m) .