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Direct coupled resonator filters realized by gap waveguide technology

Ahmadi, B ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1109/TMTT.2015.2457916
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2015
  4. Abstract:
  5. Novel types of narrow band filters based on the newly introduced gap waveguide technology are presented in this paper. The proposed filters have a central frequency of 35 GHz with approximately 1% fractional bandwidth. The filter resonators are composed of two separate plates and are manufactured by milling metallic blocks. The gap between the two metallic plates eliminates the need for electrical contact between them. This feature allows the resonators to be stacked in different layers. The filtering function is realized by producing a coupling between the stacked resonators. The measurement results of the manufactured filters are in good agreement with full-wave simulations, even without any tuning or adjustments
  6. Keywords:
  7. Direct coupled resonators ; Filter ; Gap waveguide ; Groove gap waveguide (GGW) ; Ridge gap waveguide (RGW) ; Stacked layer ; Bandwidth ; Microwave filters ; Resonators ; Waveguides ; Central frequency ; Different layers ; Direct coupled resonator filters ; Electrical contacts ; Filtering functions ; Fractional bandwidths ; Full-wave simulations ; Narrow band filter ; Waveguide filters
  8. Source: IEEE Transactions on Microwave Theory and Techniques ; Volume 63, Issue 10 , August , 2015 , Pages 3445-3452 ; 00189480 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7181728