Summary
International Symposium on Antennas and Propagation
2006
Session Number:3C1a
Session:
Number:3C1a-5
Design of Microstrip Antennas with Folded Structure
Hee-Moo Heo, Jong-Myung Woo,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
In this paper, methods to miniaturize the linear polarization and the circular polarization microstrip antennas were studied, where the two ends in the resonance length direction or all the four-ends were folded. For the linear polarization microstrip antenna, the visible length reduction rate was 73.9% and the gain was 5.12dBd. - 10dB bandwidth was 64MHz(4.1%) and E-plane and H-plane HPBW were 151? and 79.2?, respectively. For the circular polarization microstrip antenna, the folded structure of the linear polarization antenna was applied to all the four directions. In case of a triangular shape, the visible area reduction rate was 71.5% and the gain was 3.96dBd. - 10dB bandwidth was 84MHz(5.3%) and HPBW were 81? and 82? in horizontal polarization of the z-x plane and the z-y plane, respectively. In case of a rectangular shape, the visible area reduction rate was 79.5% and the gain was 2.56dBd. - 10dB bandwidth was 80MHz(5.1%) and HPBW were 91°and 124? in horizontal polarization of the z-x plane and the z-y plane, respectively. These results indicate that the 3- dimensional structure with the folded structure is adequate for the miniaturization of microstrip antennas.