七位数控雷达中频移相器的设计

移相器是相控阵雷达、卫星通信、移动通信设备中的核心组件，它的工作频带、插入损耗直接影响着这些设备的抗干扰能力和灵敏度，以及系统的重量、体积和成本。本文介绍一种由电压比较器控制的七级T型LC移相网络，七级网络分别移相2．81°、5．62°、11．24°、22．5°、45°、90°、180°。电压比较器输出高电平或者低电平来控制这各级移相网络是否接入，实现信号0°～360°的相移。

The Design of 7 bit digit Radar IF phase shifter

The phase shifter is the key component of phased array radar, mobile communication and satellite. The phase shifter＇s working frequency band and insertion loss have a great influence on the antijamming and sensitivity of these instruments, as well as their weight, volume and cost. This article introduced a new 7 bit digit phase shifter controlled by the voltage comparator which consist of seven T shape LC network. The phase shift of seven network is 2.81°, 5.62°, 11.24°, 22.5°, 45°, 90°, 180°.It can achieve phase shift 0° to 360°.