Title: | Broadband tapered microstrip leaky-wave antenna |
Authors: | Hong, WC Chen, TL Chang, CY Sheen, JW Lin, YD 電信工程研究所 Institute of Communications Engineering |
Keywords: | broadband planar balun;feeding structure;leaky-wave;microstrip;tapered antenna |
Issue Date: | 1-Aug-2003 |
Abstract: | This study proposes a novel scheme based on the characteristics of leaky-wave antennas for the empirical design of broadband tapered microstrip leaky-wave antennas. This scheme can explain and approximately model the radiation characteristics of a linearly tapered leaky-wave microstrip antenna. A broadband feeding structure that uses the balanced and the inverted balanced microstrip lines to form a pair of broadband baluns is also presented. The measured return loss of the inverted balanced microstrip lines has a VSWR less than or equal to 2 from dc to 18.6 GHz and that of the back-to-back feeding structures has a VSWR less than or equal to 2 from 2.2 to 18.6 GHz. This feeding structure can be used to feed a broadband planar leaky-wave antenna with a fixed mainbeam that uses the tapered microstrip structure. The measured bandwidth of the antenna for a VSWR less than or equal to 2 exceeds 2.3:1. |
URI: | http://dx.doi.org/10.1109/TAP.2003.814739 http://hdl.handle.net/11536/27679 |
ISSN: | 0018-926X |
DOI: | 10.1109/TAP.2003.814739 |
Journal: | IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION |
Volume: | 51 |
Issue: | 8 |
Begin Page: | 1922 |
End Page: | 1928 |
Appears in Collections: | Articles |
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