Title :
A Planar Lens Antenna With Circular Edge Inspired by Gaussian Optics
Author :
Mirkamali, Ali ; Laurin, Jean-Jacques ; Siaka, Francis ; Deban, Ramin
Author_Institution :
Ecole Polytech., Montreal, QC, Canada
Abstract :
A novel two-dimensional fan-beam lens is presented. The principle of operation of the lens is based on Gaussian optics. The focal point of the circular interface between the dielectric and air is coincident with a focal point of a hyperbolic reflector, while the feeding source is located in the other focal point. The ray tracing method along with physical optics and full wave finite element method (Ansys HFSS) are used to simulate the structure and study the effect of the feed blockage. The two-dimensional lens is implemented in a parallel-plates waveguide and a technique for matching the feeding structure is proposed. Measurement results are presented and confirm the predicted performance.
Keywords :
finite element analysis; lens antennas; parallel plate waveguides; planar antennas; ray tracing; reflector antenna feeds; Ansys HFSS; Gaussian optics; circular edge; circular interface; feed blockage; feeding source; feeding structure; focal point; full wave finite element method; hyperbolic reflector; parallel-plate waveguide; planar lens antenna; ray tracing method; two-dimensional fan-beam lens; two-dimensional lens; Gaussian optics; lens antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2013.2269762
