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Narrow-Band Microwave Filter Using High-Q Groove Gap Waveguide Resonators With Manufacturing Flexibility and No Sidewalls

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3 Author(s)
Zaman, A.U. ; Dept. of Signals & Syst., Chalmers Univ. of Technol., Götenborg, Sweden ; Kildal, P.-S. ; Kishk, A.A.

This paper presents a new type of narrow band filter with good electrical performance and manufacturing flexibility, based on the newly introduced groove gap waveguide technology. The designed third and fifth-order filters work at Ku band with 1% fractional bandwidth. These filter structures are manufactured with an allowable gap between two metal blocks, in such a way that there is no requirement for electrical contact and alignment between the blocks. This is a major manufacturing advantage compared to normal rectangular waveguide filters. The measured results of the manufactured filters show reasonably good agreement with the full-wave simulated results, without any tuning or adjustments.

Published in:

Components, Packaging and Manufacturing Technology, IEEE Transactions on  (Volume:2 ,  Issue: 11 )

Date of Publication:

Nov. 2012

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