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Study of Q-Factors of Ridge and Groove Gap Waveguide Resonators

Elena Pucci (Institutionen för signaler och system, Antenner) ; Ashraf Uz Zaman (Institutionen för signaler och system, Antenner) ; Eva Rajo-Iglesias (Institutionen för signaler och system, Antenner) ; Per-Simon Kildal (Institutionen för signaler och system, Antenner) ; Ahmed Kishk
IET Microwaves, Antennas & Propagation (1751-8725). Vol. 7 (2013), 11, p. 900-908.
[Artikel, refereegranskad vetenskaplig]

The gap waveguide technology for millimeter waves applications has been recently presented. The new structure is made by generating a parallel plate cut-off region between an artificial magnetic conductor (AMC) and a metallic plate. Propagating waves will be only allowed to follow a metal ridge or groove surrounded by the AMC. The gap waveguide can be made of only metal and does not need any contact between the metal joints compared to standard waveguides. In this study, a study of Q-factors of resonators made in ridge and groove gap waveguides are presented. The resonators are made of copper and the AMC used is a textured surface of metallic pins. Simulated and measured unloaded Qs are presented and compared with Q of a standard rectangular waveguide. High Q-factors are measured for the prototypes presented, approaching 90-96% of the simulated values. Furthermore, it is shown how the lid of pins can easily stop the leakage loss at the joints of the circuit, which is the typical cause of reduced Q-factor of standard waveguides at high frequency.



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Denna post skapades 2013-08-28. Senast ändrad 2013-09-19.
CPL Pubid: 182464

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)

Ämnesområden

Informations- och kommunikationsteknik
Elektroteknik och elektronik

Chalmers infrastruktur