Summary
International Symposium on Antennas and Propagation
2011
Session Number:FrP2
Session:
Number:FrP2-11
A Highly Directive Slot Antenna with Dielectric Loaded Corrugated Structure
Cheng Huang, Zeyu Zhao, Xiangang Luo,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
In this paper, we proposed a highly directive slot antenna with dielectric loaded corrugated structure. This antenna is composed of periodic grooves distributed at both sides of the slot feeder source. In order to reduce antenna aperture, medium with high dielectric constant is adopted as the dielectric layer loaded between neighbouring grooves. Based on modulation of surface wave propagation, the antenna performance, especially directivity could be greatly enhanced. We simulated this antenna and found that the antenna gain is largely improved from 6dB to 18.1dB and its half power beamwidth in both E and H plane is also sharply suppressed. The enhancement mechanism is explained, which is due to constructive superposition of secondary source radiated from the dielectric layer region and main source from slot feeder antenna.