Title | Dual-Frequency Circularly-Polarized Patch Antenna with Compact Size and Small Frequency Ratio |
Publication Type | Journal Article |
Year of Publication | 2007 |
Authors | Bao, XL, Ammann, MJ |
Journal Title | IEEE Transactions on Antennas & Propagation |
Volume | 55 |
Issue | 7 |
Pagination | 2104-2107 |
Journal Date | 07/2007 |
ISSN Number | 0018-926X |
Abstract | A novel probe-fed single-layer annular-ring patch antenna for dual-frequency circular polarization is evaluated numerically and experimentally verified. The proposed antenna consists of a small circular patch surrounded by two concentric annular-rings, which is loaded by an unequal lateral cross-slot ground plane. The circularly-polarized frequency ratio of the two resonant modes is tunable to a small value, suitable for wireless communications systems. The patch size of the proposed antenna is reduced by about 53% compared to the conventional circular patch at a given frequency. The radiation characteristics of the novel antenna are also presented. |
URL | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=4267894 |
DOI | 10.1109/TAP.2007.900271 |
Funder | Science Foundation Ireland |
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