Title :
Analysis of offset dual-patch microstrip antenna
Author :
Au, T.M. ; Tong, K.F. ; Luk, K.M.
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
fDate :
12/1/1994 12:00:00 AM
Abstract :
An analysis of the offset dual-patch microstrip antenna is described. Input impedance, SWR bandwidth and far-field radiation patterns are investigated. Rigorous Green functions of the complex multilayer structure are derived in the spectral domain. A moment method together with a Galerkin procedure are employed to solve for the unknown currents on the patches. Piecewise sinusoidal functions are selected as expansion and testing modes. It is found that SWR bandwidth varies significantly with sizes and locations of the metal patches. Experimental results are obtained to verify the theoretical findings
Keywords :
Galerkin method; Green´s function methods; antenna radiation patterns; electric impedance; integral equations; method of moments; microstrip antennas; spectral-domain analysis; Galerkin procedure; SWR bandwidth; complex multilayer structure; expansion modes; far-field radiation patterns; input impedance; metal patches; moment method; offset dual-patch microstrip antenna; piecewise sinusoidal functions; rigorous Green functions; spectral domain; testing modes;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19941545
