Open AccessStudy of Q ‐factors of ridge and groove gap waveguide resonators
Author(s) -
Pucci Elena,
Zaman Ashraf Uz,
RajoIglesias Eva,
Kildal PerSimon,
Kishk Ahmed
Publication year - 2013
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0081
Subject(s) - resonator , groove (engineering) , materials science , waveguide , millimeter , conductor , optics , ridge , leakage (economics) , metal , optoelectronics , composite material , physics , paleontology , metallurgy , macroeconomics , economics , biology
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 Q s 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.