Broadband Slot Spiral Antenna with External Feed and Microstrip-to-Slotline Transition
Date Issued
2004-07-31
Date
2004-07-31
Author(s)
DOI
922213E002070
Abstract
As the demand for spread spectrum and multifunction RF systems
increases, antennas that are capable of wideband/multiband operation are
becoming more and more desirable in recent years. Spiral antennas with
inherent broadband nature meet the requirements for automotive applications
[1]. Recently, slot spiral antennas with or without reflecting cavity have been
widely studied [2]-[5]. In this work, we propose a new design of slot spiral
antenna with external feed combined with wideband microstrip-to-slotline
transition and backed with a reflecting cavity for unidirectional radiation and
gain enhancement. A new approach to identify the active region of spiral
antenna will also be presented.
Publisher
臺北市：國立臺灣大學電信工程學研究所
Type
report
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922213E002070.pdf
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Format
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(MD5):20ef165686af9d5264fe180c4466bca4