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X-band Tx and Rx Filters of Earth Terminals for Satellite Communications  

Kwak, Changsoo (한국전자통신연구원 방송통신미디어 연구소 위성무선융합연구부 위성무선RF기술연구실)
Uhm, Manseok (한국전자통신연구원 방송통신미디어 연구소 위성무선융합연구부 위성무선RF기술연구실)
Jin, Bongcheol (국방과학연구소)
Seo, Hakkeum (국방과학연구소)
Suh, Joonsuk (엠쓰리시스)
Yom, Inbok (한국전자통신연구원 방송통신미디어 연구소 위성무선융합연구부 위성무선RF기술연구실)
Publication Information
Journal of Satellite, Information and Communications / v.9, no.2, 2014 , pp. 52-57 More about this Journal
Abstract
In this paper, designs and test results of X-band Tx and Rx filters for satellite communications are presented. The passbands are 7.9 ~ 8.4 GHz and 7.25 ~ 7.75 GHz for the Tx filter and the Rx filter respectively. Both of the filters require very high rejection performance between the two passbands. In order to make these filters in an in-line type, non-resonating node method was adopted and E-plane junction was used for the non-resonating node. Design procedures of circuit model design and full-wave electromagnetic model design are described. The test results show that all the performances meet requirements including temperature variations and the sizes are smaller than those of domestic commercial filters by about 30 ~ 40 %.
Keywords
satellite communications; Rx filter; TX filter; X-band; non-resonating node;
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  • Reference
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