宽频带L波段360模拟信号移相器的设计
Design of Broad-Band L Band 360 Analog Signal Phase Shifter
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摘要: 该文介绍了宽频带360模拟移相器的设计理论。针对移相器的线性调相、平衡插入损耗波动、宽频带等进行了详细的探讨,且推导出确定移相器频带宽度的目标函数。用CAD方法迅速而准确地优化各网络设计参量。采用微波集成电路工艺制作的L波段模拟移相器在1.3~2.1GHz范围内可获得360连续可变相移,最大调相电压18V,中心频率线性度优于2.5%,插入损耗波动小于3dB。综合性能均优于国内报道的移相器。Abstract: A 360?broad-band analog phase shifter is designed by means of CAD. Linear phase-shift, balancing insertion loss and expanding bandwidth of phase shifter are analyzed in detail. The objective function about phase shifter s bandwidth is also deduced. The analog phase shifter which uses hyperabrupt varactor chips is fabricated with MIC technology. In the frequency range of 1.3-2.1GHz, continuous variable phase-shifter up to 360 and linear deviation of less than 2.5% can be obtained. Its insertion loss varies less than 3dB. Comparing with reported phase shifters, its performances are excellent.
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