Hardware circuits design of RF synchronized switch

In order to improve the performance for repeater station,the mechanism and design method for radio frequency synchronized switch at the frequency of 2010 MHz to 2025 MHz are presented in this paper.The key technologies utilized in the design include the two PIN diodes series connection,the deep bias voltage setting and the application of quarter wavelength impedance converter.The prototype of radio frequency synchronized switch has been realized using traditional printed circuit board technology to validate the proposed concepts.The designed radio frequency synchronized switch exhibits good performance.The isolation is larger than 50 dB,the insertion loss is less than 1.5 dB and the input or output power handling is 5 W.