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本文论证了用电阻补偿法平衡 360°模拟移相器插入损耗波动的正确性 ,并推导出确定移相器频带宽度的目标函数 ,籍 CAD给出移相器在最大带宽条件下的有关设计参量 ,通过直观曲线为选择变容二极管作理论依据。采用微波集成电路工艺制作的模拟移相器在 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 3d B。
This paper demonstrates the correctness of using the resistance compensation method to balance the insertion loss fluctuation of the 360 ° analog phase shifter and deduces the objective function to determine the bandwidth of the phase shifter. CAD gives the design parameters of the phase shifter under the maximum bandwidth , Through the intuitive curve for the selection of varactor diodes for theoretical basis. The analog phase shifter fabricated by microwave integrated circuit technology can obtain 360 ° continuously variable phase shift within the range of 1.3-2.1GHz with the maximum phase-modulation voltage of 18V and the center frequency linearity better than ± 2.5% with the insertion loss fluctuation less than 3d B.