Open AccessA 42‐GHz Wideband Cavity‐Backed Slot Antenna with Thick Ground Plane
Author(s) -
Lee JongMoon,
Cho YoungHeui,
Pyo CheolSig,
Choi IkGuen
Publication year - 2004
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.04.0203.0021
Subject(s) - ground plane , wideband , acoustics , antenna (radio) , slot antenna , plane (geometry) , telecommunications , electrical engineering , optics , electronic engineering , engineering , physics , microstrip antenna , geometry , mathematics
We investigate the characteristics of a wideband and high‐gain cavity‐backed slot antenna in terms of the reflection coefficients, radiation patterns, and gain. A cavity‐backed slot antenna structure includes baffles, reflectors, and thick ground planes. The measured gain and bandwidth of a 10‐dB return loss in a cavity‐backed 2 × 2 array slot antenna with h 1 =2 mm, d = 2 mm are 15.5 dBi and nearly 27% respectively, at 42 GHz. Baffles and reflectors are used to increase antenna gain, thus reducing the coupling among the slots on the thick ground plane.