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http://dx.doi.org/10.5394/KINPR.2007.31.6.503

A study on the Design and Fabrication of Microstrip Array Antenna for Ultra Wideband Applications  

Ham, Min-Su (Graduate School of National Mokpo Maritime University)
Choi, Byung-Ha (Graduate School of National Mokpo Maritime University)
Abstract
In this paper, the ultra-widebend, microstrip patch antenna with the bandwidth of 3 GHz was implemented for ultra-wideband(UWB) wireless communication applications. In order to cover the very wide bandwidth of 3 GHz, a multi-resonance antenna was designed, each resonance frequency was separated into five frequency bend, 7.5, 8.1, 8.7, 9.3, and 9.9GHz with the interval of 600MHz BW. And for wideband characteristics of each antenna, U-slot antennas were designed at each center frequency. Designed five U-slot antennas were connected in series for multi-resonance of 3GHz BW and wideband matching was also designed for impedance matching transmission line calculated. The relative dielectric constant, the height, the loss tangent of the PCB substrate were ${\epsilon}_r=4.8,\;h=0.6$ and loss tangent=0.0009 respectively. The implemented antenna's radiation patterns and gain were directivity characteristics and $1.46{\sim}4.08dBi$ at the five separated center frequency.
Keywords
UWB(ultra-widebend); Microstrip antenna; U-slot; Multi-resonance; Array antenna;
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