Title :
Optimisation of an unequally spaced dual-band printed base station antenna array using a marginal distribution technique
Author :
Starke, P.L. ; Cook, G.G.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
fDate :
8/1/2002 12:00:00 AM
Abstract :
An efficient optimisation algorithm is presented for printed antenna design which aims to reduce the number of simulation runs required to find an optimal solution. Such efficiency is important in antenna design because of the high computational cost of each simulation run. The algorithm makes use of marginal distributions to guide the optimisation process, and its real-valued (rather than binary) representation of optimisation parameters makes it directly applicable to a wide range of antenna design problems. The particular application presented is for the design of an unequally spaced dual-band printed cellular base station array. The optimisation algorithm successfully chooses spacing and element length values for the array to meet radiation pattern requirements in both the GSM900 (880-960 MHz) and DCS1800 (1710-1880 MHz) bands. Theoretical results for the optimised printed wire array are compared with measurements.
Keywords :
UHF antennas; antenna radiation patterns; cellular radio; microstrip antenna arrays; multifrequency antennas; optimisation; 1710 to 1880 MHz; 880 to 960 MHz; DCS1800; GSM900; UHF; marginal distribution technique; optimisation; printed antenna design; printed cellular base station array; printed wire array; radiation pattern; unequally spaced dual-band printed base station antenna array;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20020539