Title :
A novel wideband and compact microstrip grid array antenna
Author :
Wang, Guosheng ; Lin, Shuiyang ; Pan, Kaifu ; Ge, Xiaoguang ; Yang, Yang
Author_Institution :
Shanghai Res. Center for Wireless Commun. (WiCO), Shanghai, China
Abstract :
A wideband and compact microstrip grid array antenna is presented. The antenna is printed on a dielectric substrate, backed by a metal board, and directly fed from a 50Ω coaxial cable. It adopts elliptical radiation elements to enhance its impedance and gain bandwidths, and sinusoid lines to reduce its size. Structural parameters of a proposed antenna with 7 radiation elements were optimized by a parallel Genetic Algorithm (GA) on a cluster system. A prototype antenna was fabricated and tested. Results of simulation and measurement agree well and show the antenna exhibits encouraging properties, e.g. a S11 <;-10 dB bandwidth of 25% and a 3 dB gain-drop bandwidth of 16.3%, both of which are much wider than that of conventional grid array antennas, as well as a maximum gain of approximately 13.7 dBi with an area-reduction factor of 47%.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; coaxial cables; dielectric materials; genetic algorithms; microstrip antenna arrays; GA; antenna feeds; cluster system; coaxial cable; compact microstrip grid array antenna; dielectric substrate; elliptical radiation elements; metal board; parallel genetic algorithm; printed antenna; resistance 50 ohm; wideband antenna array; Bandwidth; Broadband antennas; Coaxial cables; Dielectric substrates; Genetic algorithms; Impedance; Microstrip antenna arrays; Microstrip antennas; Prototypes; Structural engineering; Compact; microstrip grid array antenna; wideband;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5705-2
DOI :
10.1109/ICMMT.2010.5524954
