High Power Cavity Type Tunable Filter Using Switch for 1.5 GHz Band

Switch를 이용한 1.5 GHz 대역 고출력 Cavity 기반 Tunable Filter

  • Received : 2015.07.09
  • Accepted : 2015.11.20
  • Published : 2016.01.31


In this paper, the tunable filter based on high power cavity using mechanical switch for 1.5 GHz band is presented. The LPF is inserted to eliminate the spurious wave, coupler is embeded to extract the output power, and then the tunable filter system is configured using mechanical switch. The LPF obtains attenuation over 40 dB between 4 GHz and 12.75 GHz, Coupler is satisfied with coupling value 40 dB and coupling isolation over 55 dB. The tunable filter system using mechanical switch obtains insertion loss 0.88 dB at bypass mode between 1,495.9 MHz and 1,510. 9 MHz, 3.29 dB at fil mode between 1,495.9 MHz and 1,500.9 MHz. It is also satisfied with output power of 132 W at the center frequency 1,498.4 MHz, and switching time below 10 ms.


Bandpass Filter;Low Pass Filter;Coupler;Tunable Filter;High Power Filter;Mechanical Switch


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Supported by : 산업통상자원부 우수기술연구센터(ATC)