A dielectric cover is usually added on top of a microstrip antenna to protect the antenna from environmental damage. The effects of a dielectric cover on the characteristics of circular and annular ring patch antennas are investigated. The theoretical results are derived from the conventional Hankel transform analysis. Some experimental data are also obtained to verify the theory. In general, it is found that when the thickness of the cover is increased, the resonant frequency decreases monotonically. It is also observed that the half-power bandwidth only changes slightly with the superstrate thickness.
|Number of pages
|IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
|Published - 1 Dec 1989
|International Symposium Digest - Antennas and Propagation - 1989 - San Jose, CA, United States
Duration: 26 Jun 1989 → 30 Jun 1989
ASJC Scopus subject areas
- Electrical and Electronic Engineering