Title :
A theory on the broadbanding of a patch antenna
Author :
Chow, Y.L. ; Shiu, K.H.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong
Abstract :
The aim of this paper is to understand the cause of the narrow band in a microstrip patch antennas. The paper points out that the cause is due to heavy reactance cancellation. The cause is the same regardless how the patch is fed, by a coaxial probe or through a short slot by a microstripline under the ground plane. With the cause known, one can confidently design broadband patches with extra slot cuts on the patch or on the ground plane. Two specific examples are given
Keywords :
antenna feeds; antenna theory; microstrip antennas; broadbanding theory; coaxial probe feed; ground plane; microstripline feed; patch antenna; reactance cancellation; slot cuts; Coaxial components; Feeds; Frequency; Impedance; Magnetic resonance; Magnetic separation; Microstrip antennas; Narrowband; Patch antennas; Probes;
Conference_Titel :
Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific
Print_ISBN :
962-442-117-X
DOI :
10.1109/APMC.1997.659350
