C-Ku band reflection-type RF-MEMS tunable BPF

Tamotsu Nishino*, Sang Seok Lee, Hiromoto Inoue, Yukihisa Yoshida, Yusuke Kitsukawa, Moriyasu Miyazaki

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)


In this paper, we propose a low loss tunable band pass filter (BPF) with direct contact RF-MEMS switches. To reduce the insertion loss in the pass band, reflection-type architecture is implemented. To obtain wide tuning range and sharp characteristics, a lumped-element configuration is adopted. We prove the reflection loss of a tunable BRF whose lumpedelements were changed over by the direct contact switches, is much lower than the insertion loss of a tunable BPF of the same system. Finally, we validate the concept by the trial fabrication, showing the loss of 3.2dB, 2.SdB and 3.5dB at the center of the three selectable frequencies over the C-Ku bands.

Original languageEnglish
Title of host publicationProceedings of the 37th European Microwave Conference, EUMC
Number of pages4
Publication statusPublished - 2007
Externally publishedYes
Event37th European Microwave Conference, EUMC - Munich, Germany
Duration: 2007 Oct 92007 Oct 12

Publication series

NameProceedings of the 37th European Microwave Conference, EUMC


Conference37th European Microwave Conference, EUMC


  • Microwave filters
  • Tunable filters

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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