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SPST Switch MMIC for Microwave Switch Matrix  

Chang Dong-Pil (한국전자통신연구원 위성통신RF기술연구팀)
Yom In-Bok (충남대학교 전자공학과)
Oh Seung-Hyueb (한국전자통신연구원 위성통신RF기술연구팀)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.2A, 2006 , pp. 201-206 More about this Journal
Abstract
A SPST Switch MMIC which used for Microwave Switch Matrix(MSM) of communications satellite payload with multi-beam function has been designed and fabricated. New RE FET switch configuration has been devised to improve power characteristics and isolation. Input and output return losses are better than another switches reported previously for both On and Off states. The MMIC chips were fabricated in 0.15um GaAs pHEMT process and measured insertion loss less than 2.0dB and isolation more than 63dB in the frequency range of 3GHz$\∼$4GHz. Output 3rd order interceptpoint above 32dBm has been recorded and the value is very high even though the unit pHEMT has gate width of 0.2mm and only four pHEMT are used in the MMTC.
Keywords
RF Switch; MMIC; S-band Switch; Micrwave Switch Matrix;
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