A ray-tracing method to analyzing modulated planar Fabry-Perot antennas

Author

Hougs, Mikkel Dahl ; Kim, Oleksiy S. ; Breinbjerg, Olav

Author_Institution

Dept. of Electr. Eng., Tech. Univ. of Denmark, Lyngby, Denmark

fYear

2015

fDate

13-17 April 2015

Firstpage

1

Lastpage

4

Abstract

A new approach for fast modelling of Fabry-Perot antennas with modulated partially reflective surfaces (PRS) using ray-tracing is proposed. For validation of the method, a configuration is introduced which consists of a cavity with a modulated PRS, fed internally by a magnetic dipole. The PRS consists of 18×18 square patches of varying size placed in a regular grid with a lattice constant of approximately λ₀/3 at 20GHz. The radiation pattern of the configuration is determined both by the presented model and by a full-wave solver which is used as a reference. The Directivity predicted by the model and the reference is 16.2 dB and 16.8 dB respectively which proves a good agreement.

Keywords

antenna radiation patterns; magnetic moments; microwave antennas; planar antennas; ray tracing; PRS; antenna radiation pattern; frequency 20 GHz; full-wave solver; lattice constant; magnetic dipole; modulated planar Fabry-Perot antenna analysis; partially reflective surface; ray-tracing method; Antenna radiation patterns; Apertures; Cavity resonators; Magnetic resonance imaging; Ray tracing; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2015 9th European Conference on

Conference_Location

Lisbon

Type

conf

Filename

7228789