Study of Q-Factors of Ridge and Groove Gap Waveguide Resonators
Journal article, 2013

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.

Author

Elena Pucci

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Ashraf Uz Zaman

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Eva Rajo

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Per-Simon Kildal

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Ahmed Kishk

Concordia University

IET Microwaves, Antennas and Propagation

1751-8725 (ISSN)

Vol. 7 11 900-908

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1049/iet-map.2013.0081

More information

Created

10/6/2017