A design of printed dual band antennas for wireless communication systems

This paper presents a printed dual band antenna, which was designed and fabricated two patch lines with a coplanar waveguide-feed, for PCS(Personal Communication Systems) and the IMT2000 band. The proposed antenna has been a broad band and a small size. The measured bandwidth of the proposed antenna obtained about 290 MHz at a lower resonance frequency band (1.63-1.92 GHz) and about 430 MHz at a higher frequency band (1.95-2.38 GHz) for return loss-10 dB, which just corresponds to PCS band(1.75-1.87 GHz) and IMT 2000 band (1.92-2.17 GHz), respectively. The measurement and simulation results obtained good agreement. This antenna satisfies the bandwidth required for both PCS and IMT 2000 band.