Coplanar Waveguide Fed Log-periodic Slot Antenna for Ultra-wideband Applications
Date Issued
2005
Date
2005
Author(s)
Wang, Po-Hsiang
DOI
en-US
Abstract
With the recent intensive development of the wireless personal area network (WPAN), several technologies have been introduced to fulfill the needs of WPAN. One of the most attractive technologies for WPAN is the ultra-wideband (UWB) system. In 2002, The Federal Communications Committees (FCC) had allocated the 3.1 to 10.6 GHz band for the UWB system. Because of the ultra wide bandwidth, there are many advantages exist in the UWB system that can not be achieved in the traditional narrowband systems.
Designing an antenna for the UWB system is quite a challenge for the antenna designers. In this thesis, we design a novel coplanar waveguide-fed log-periodic slot antenna which possesses a very wideband performance and can be used in the UWB system. The antenna has a broadside pattern, a flat gain response between the allocated UWB spectrum, and a quite small size. In order to prevent the unwanted interferences with the present wireless local area network (WLAN), additional metal strips are added to the designed UWB slot antenna and a band-notched characteristic is achieved. The experimental results are introduced and the behavior of this antenna is thoroughly investigated and discussed.
Subjects
共面波導
超寬頻
天線
coplanar waveguide
ultra-wideband
antenna
Type
thesis
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