Microstrip patch antenna design for UMTS handsets

Abstract

In this paper a novel feeding technique is introduced in order to enhance the required bandwidth and reduce the size of a microstrip patch antenna which radiates efficiently in 1900–2200 MHz band for UMTS. Unlike other well-known feeding methods, rectangular radiating patch, which is designed as antenna structure, is fed by coupling of a planar conductive part which shows characteristics of a monopole antenna alone. The designed antenna has 18.3 % (1.88– 2.26 GHz) impedance bandwidth which has the quality of covering UMTS band.