Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design and Realization. of the Dual-mode Channel Filter and Group-Delay-and-Amplitude Equalizer for the Ka-band Satellite Transponder Subsystem

  • Sungtek Kahng (Communication Satellite Development Center, Electronics and Telecommunications Research Institute) ;
  • Uhm, Man-Seok (Communication Satellite Development Center, Electronics and Telecommunications Research Institute) ;
  • Lee, Seong-Pal (Communication Satellite Development Center, Electronics and Telecommunications Research Institute)
  • Published : 2003.11.01
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Abstract

In this paper, the design of a channel filter and its group-delay-and-amplitude equalizer is carried out for the Ka-band satellite transponder subsystem. The 8th order dual-mode filter is employed for high selectivity around the band-edges with an elliptic-integral function response and has an in-line configuration. The 2-pole, reflection-type, group-delay equalizer is designed and manufactured to reduce the group-delay and amplitude variation, which can be large for such a high order filter. It is noted that in both the filter and equalizer, adopting the dual-mode coupling mechanism leads to less mass and volume. Through measurement, the performance of the realized group-delay-equalized filter is shown to meet the equipment requirements and to be appropriate for the satellite input multiplexer.

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References

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