Ka波段4位数字移相器的设计

移相器的应用十分广泛,比如各种通讯和雷达系统,微波仪器和测量系统,特别在相控阵雷达中应用最多。移相器是相控阵雷达T/R组件的重要组成部分。本文主要对Ka波段4位数字移相器进行了研究,并完成了实际电路的设计、制作和测试。在34.2GHz±300MHz频率范围内,所有相移位（16个）的插入损耗都小于10.71dB,输入端和输出端的回波损耗也都小于-14.84dB。另外,所有相移位在中心频率34.2GHz处的相位误差都小于士3.0°,最小仅有0.15°,所有指标均优于设计要求。

Design of Ka-band 4-bit digital phase shifter

the phase shifter application is extremely widespread, such as various communication and radar systems, microwave instrumentation and measurement systems, particularly in the application of phased array radar the largest phase-shifter is a phased array radar T / R components, an important component. We have studied/Ca-band 4-bit digital phase shifter in this paper, and finished designing, fabricating and testing the real circuit .At 34. 2GHz ±300MHz frequency range,all the phase shift （16） and insertion loss are less than 10. 71dB,Input and output return loss are also smaller than -14. 84 dB.In addition, all the phase shift at the center frequency of 34. 2GHz Office of phase errors are less than ± 3.0 °,the smallest one is only 0.15 degrees,all indicators are better than the design requirements.