Design and Analysis of Tapered-Slot-Fed Miniature Antennas for Ultra-Wideband Applications
Date Issued
2005-07-31
Date
2005-07-31
Author(s)
DOI
932213E002091
Abstract
Ultra-wideband (UWB) technology has
experienced a blooming growth in the past few
years. The basic idea of this promising
technology is to directly transmit and receive
trains of extremely short baseband pulses that
spread over bandwidth of several GHz.
Generally speaking, it is quite challenging to
design an antenna to simultaneously fulfill all
the requirements in an UWB system, including
ultra-wide bandwidth, omnidirectional patterns,
constant gain and group delay over the entire
band, high radiation efficiency and low profile.
In this project, a novel category of
ultra-wideband antenna topology is proposed
and investigated. This new class of antennas
utilizes a unique tapered-slot feeding structure
and various radiating elements to fulfill the
needs of UWB antennas . By means of a
dimensionless normalized antenna transfer
function, both frequency domain and time
domain characteristics of these antennas are
investigated. Two measures, the uniformity
related to the radiation patterns and the fidelity
associated with the transient behaviors, are used
to quantitatively describe the performance of
such antennas over an ultra-wide bandwidth. The
effects of further minimizing the antenna
dimension is discussed as well.
Subjects
Ultrawideband antennas
slot
antennas
antennas
antenna transient analysis
antenna
radiation patterns
radiation patterns
Publisher
臺北市：國立臺灣大學電信工程學研究所
Type
report
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