Title :
Low-profile dual-frequency circular microstrip antenna for dual ISM bands
Author_Institution :
Dept. of Electron. Eng., Nat. Kaohsiung Univ. of Appl. Sci., Taiwan
fDate :
8/2/2001 12:00:00 AM
Abstract :
A novel dual-frequency design of a singIe-layer, single-feed circular microstrip antenna for dual ISM bands is demonstrated. Due to the embedding of an offset open-ring slot in a circular patch, a novel dual-frequency operation with its two operating modes centred at about frequencies 2.4 and 5.2 GHz has been obtained. The two operating frequencies have similar broadside radiation patterns and same polarisation planes, and small antenna-gain variation. Details of the antenna design and experimental results for the proposed antenna are presented
Keywords :
antenna radiation patterns; circular waveguides; electromagnetic wave polarisation; microstrip antennas; 2.4 GHz; 5.2 GHz; antenna design; antenna-gain variation; broadside radiation patterns; circular patch; dual ISM bands; low-profile dual-frequency circular microstrip antenna; offset open-ring slot; operating modes; polarisation planes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010686
