Back Radiation Suppression Through a Semitransparent Ground Plane for a Millimeter-Wave Patch Antenna
| Autor: | Atif Shamim, Kirill Klionovski |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Patch antenna
Physics Physics::Instrumentation and Detectors business.industry 020208 electrical & electronic engineering Random wire antenna 020206 networking & telecommunications 02 engineering and technology Radiation pattern Optics Beam tilt 0202 electrical engineering electronic engineering information engineering Helical antenna Electrical and Electronic Engineering Antenna (radio) business Monopole antenna Ground plane |
| Zdroj: | IEEE Transactions on Antennas and Propagation. 65:3935-3941 |
| ISSN: | 1558-2221 0018-926X |
| DOI: | 10.1109/tap.2017.2717967 |
| Popis: | Omnidirectional radiation pattern with minimum backward radiation is highly desirable for base station antennas to minimize the multipath effects. Semitransparent ground planes have been used to reduce the backward radiation, but mostly with complicated nonuniform impedance distribution. In this paper, we propose, for the first time, a round semitransparent ground plane of radius $0.8\lambda $ with uniform impedance distribution that can improve the front-to-back ratio of a wide-band patch antenna by 11.6 dB as compared to a similar sized metallic ground plane. The value of uniform impedance is obtained through analytical optimization by using asymptotic expressions in the Kirchhoff approximation of the radiation pattern of a toroidal wave scattered by a round semitransparent ground plane. The semitransparent ground plane has been realized using a low-cost carbon paste on a Kapton film. Experimental results match closely with those of simulations and validate the overall concept. |
| Databáze: | OpenAIRE |
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