Coplanar Waveguide Fed Bowtie Slot Antennas for Ultra-Wideband Applications
Date Issued
2006
Date
2006
Author(s)
Zheng, Chia-Shang
DOI
en-US
Abstract
Ultra-wideband (UWB) technology has experienced a blooming growth in recent years and becomes an attractive candidate for short-range high-speed indoor data communications. In 2002, the U.S. Federal Communications Commission (FCC) authorized the commercial deployment of UWB technology, and officially allocated the spectrum from 3.1 to 10.6 GHz for unlicensed UWB communication applications. To possess ultra-wide bandwidth and lower power, the UWB system transmits and receives extremely short pulses. It is quite a challenge to design an antenna for the UWB system, because antennas in the UWB system tend to introduce unpleasant signal distortion and degradation.
In this dissertation, we design a novel coplanar waveguide-fed bowtie slot antenna based on the self-complementary structure. Due to the property of self- complementary structure, the antenna possesses very wide impedance bandwidth. However, the actual operating bandwidth is limited by the distortion of radiation patterns as frequency increases. A modification is made to improve the radiation patterns. In order to prevent the unwanted interferences with the incumbent wireless local area network (WLAN), an additional slot is added to reject the overlapping band. Both the frequency and time domain results are shown and discussed.
Subjects
超寬頻
領結形
槽孔天線
UWB
bowtie
slot antenna
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-95-R93942056-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):5a54314ff273f4471697777b5eae8934