基于PIN管的多路大功率宽带高线性射频开关的研制

设计制作了一款工作于100~400MHz的大功率宽带高线性单刀多掷PIN管收发开关。该开关采用1分6再分6的串联型结构,通过对PIN管的选取和微带线布局来实现对开关插损、隔离度和驻波比的要求。由于采用串联结构而非串并结构,该开关驱动部分大为简化。测试结果表明,该开关插损小于0.3 dB,隔离度大于50 dB,驻波比小于1.2,功率容量为100 W,二次谐波抑制大于70 dBc。

Development of multi-channel high-power broadband high linearity RF switch based on PIN diode

A high-power,high-linear,broadband single pole multi throw PIN diode RF switch working at 100-400 MHz was designed and fabricated.The switch used a 6×6 structure,which can meet the requirements of the insertion loss,isolation and VSWR with picking the right PIN diodes and rational distribution of microstrip lines.The drive portion of the switch was greatly simplified due to using the series structure instead of the series-parallel structure.Test results show that the insertion loss <0.3 dB,the isolation>50 dB,VSWR<1.2,the power capacity = 100 W,the second harmonic suppression > 70 dBc.