Ultra-wideband antenna in coplanar technology
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Date
2007-12-22T21:29:55Z
Authors
Lam, Hung-Jui
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Abstract
Ultra-wideband (UWB) antennas are one of the most important elements for UWB systems. With the release of the 3.1 - 10.6 GHz band, applications for short-range and high-bandwidth handheld devices are primary research areas in UWB systems. Therefore, the realization of UWB antennas in printed-circuit technologies within relatively small substrate areas is of primary importance.
This thesis focuses on the design of a new UWB antenna based on coplanar technology. Compared with microstrip circuitry, coplanar technology achieves easier fabrication and wider antenna bandwidth. Two professional full-wave field solver software packages, HFSS and MEFiSTo-3D, are used as analysis tools to obtain antenna performances.
A new printed-circuit antenna in coplanar technology for UWB systems is introduced. The frequency of operation is 3.1 GHz to 10.6 GHz with a VSWR < 2. Nearly omni-directional characteristics in vertical polarization are demonstrated at selected frequencies. Relatively good group delay characteristics are obtained and compare well with other published UWB antenna designs.
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Keywords
Ultra-Wideband Antenna, Coplanar Technology, UWB