大功率微波PIN开关谐波对消技术研究
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摘要
针对大功率微波PIN开关产生谐波问题,提出了一种谐波对消PIN开关电路,通过一个反向并联PIN管对二次谐波进行对消抑制。在谐波对消原理分析基础上研制了谐波对消PIN开关试验电路,实测在工作频率1～1.2 GHz,输入功率45 dBm以下范围内,二次谐波小于-63.5 dBc,比无谐波对消的PIN开关的二次谐波减小14 dB以上,有效抑制了大功率PIN开关产生的二次谐波。
A PIN switch with harmonic cancellation circuit is proposed for the situation that PIN switch induces harmonic signal at high power. The harmonic cancellation circuit is composed of a reverse paralleling PIN diode. Based on theoretical analysis, the experimental circuit is developed and measured. The result shows that the second harmonic is smaller than-63.5 dBc which is 14 dB better than before when frequency is 1-1.2 GHz and input power is smaller than 45 dBm. This harmonic cancellation circuit can effectively suppress the second harmonic.
A PIN switch with harmonic cancellation circuit is proposed for the situation that PIN switch induces harmonic signal at high power. The harmonic cancellation circuit is composed of a reverse paralleling PIN diode. Based on theoretical analysis, the experimental circuit is developed and measured. The result shows that the second harmonic is smaller than-63.5 dBc which is 14 dB better than before when frequency is 1-1.2 GHz and input power is smaller than 45 dBm. This harmonic cancellation circuit can effectively suppress the second harmonic.
引文
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[2] 刑孟江,杨银堂,李跃进,等.带有直流偏置的毫米波单刀双掷开关仿真与设计[J].微波学报,2011,27(5):28-31 Xing M J,Yang Y T,Li Y J,et al.Simulation and design of millimeter wave SPDT switch with DC bias[J].Journal of Microwaves,2011,27(5):28-31
[3] 吴云忠,李文广,谭兵.PIN 二极管开关设计及其非线性失真分析[J].舰船电子工程,2014,34(7):198-202 Wu Y Z,Li W G,Tan B.PIN diode switch design and nonlinear distortion analysis[J].Ship Electronic Engineering,2014,34(7):198-202
[4] Caverly R H,Hiller G.Distortion in microwave and RF switches by reverse biased PIN diodes[A].IEEE MTT-S International Microwave Symposium Digest[C],1989.1073-1076
[5] Hiller G.The reverse bias requirement for PIN diodes in high power switches and phase shifters[A].IEEE MTT-S International Microwave Symposium Digest[C],1990.1321-1324
[6] Caverly R H,Hiller G.Establishing the minimum reverse bias for a PIN diode in a high-power switch[J].IEEE Trans MTT,1991,38(12):1938-1943
[7] Gustavo M B,Federica C,Giovanni G.Physics-based PIN diode SPICE model for power-circuit simulation [J].IEEE Trans Ind Appl,2007,43(4):911-919