Research on Design and Manufacturing Process of 100 GHz Dual-Band Pass Cavity Filter
Aiming at the phenomenon that the current dual-frequency or multi-band pass filter is mainly based on the working range within 30 GHz,and the single-frequency ultra-wideband design is the mainstay in the high-frequency millimeter wave range,a model of dual-band cavity filter that can work in the 100 GHz~103 GHz range with two operating band is designed. The two working frequency bands are 100.67 GHz~101.36 GHz and 102.67 GHz~102.78 GHz,and the corresponding relative bandwidths are 0.68% and 0.11%, respectively. The designed cavity filter is manufactured with the UV-LIGA process,and the test platform is built with the vector net ana-lyzer and the spread spectrum module to complete the test. The test results show that the absolute error of the relative bandwidth is 0.19% and 0.02% respectively.