Kyuhoon Lee, Eunhyuk Kwak, Boogyoun Kim
(School of Electronic Engineering, Soongsil University, Seoul156-743, Korea)
Abstract：Ring patch antennas have the characteristics of electrically small size as decreasing the width of the conducting portion compared to those of conventional patch antennas. In the ring patch antenna, using capacitive feed method is suitable for impedance matching. The effect of the size of the feed patch on the input impedance of the square ring patch antennas are analyzed and radiation patterns of the square ring patch antennas are compared to that of a square conventional patch antenna by the simulated results.
Key words：ring patch antenna; capacitive feed method; impedance matching; radiation pattern; cross polarization level
CLD number： TN823+.15 Document code： A
Article ID： 1674-8042(2013)01-0043-04 doi： 10.3969/j.issn.1674-8042.2013.01.010
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