Title :
Bandwidth enhancement technique for quarter-wave patch antennas
Author :
Chiu, Chi Yuk ; Shum, Kam Man ; Chan, Chi Hou ; Luk, Kwai Man
Author_Institution :
Wireless Commun. Res. Center, City Univ. of Hong Kong, Kowloon, China
fDate :
6/25/1905 12:00:00 AM
Abstract :
A novel technique that improves the performance of a conventional quarter-wave patch antenna is proposed. Two different geometries (U-slot and L-slit) are investigated experimentally. With the inclusion of a folded inner small patch, we achieve impedance bandwidths of 53% and 45% for the U-slot and L-slit, respectively, for a voltage standing wave ratio less than 2. Radiation patterns are stable across the whole operating frequency bands.
Keywords :
antenna radiation patterns; broadband antennas; electric impedance; microstrip antennas; 3.57 to 6.75 GHz; L-slit antenna; U-slot antenna; VSWR; bandwidth enhancement technique; folded inner patch; impedance bandwidths; quarter-wave patch antennas; radiation patterns; voltage standing wave ratio; wideband antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Geometry; Impedance; Patch antennas; Probes; Voltage; Wavelength measurement;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2003.816636
