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This paper presents a new excitation scheme producing dual circular polarization in a class of Dielectric Resonator Antennas characterized by their high profile. The excitation uses a sequential feeding, which produces high quality dual circular polarization over a wide range of angles and results in a polarization bandwidth of 20% to 30% in the Ku-Band. A similar impedance bandwidth can be achieved...
A bandwidth limit was recently developed for antenna arrays backed by a PEC ground plane, under pure or polarization <citerefgrp><citeref refid="ref1"/></citerefgrp>. In this paper, we extend this result to account for simultaneous excitation of both and modes, yielding a more general bandwidth limit for lossless and reciprocal PEC-backed arrays (LRPBA) under...
This paper proposes a mm-wave low-profile reflection polarizer based on single layer anisotropic impedance surfaces. It is demonstrated that by virtue of anisotropy it is possible to independently control the reflection characteristics of the two orthogonal components of a linearly-polarized incident plane waves and therefore achieve polarization conversion. A W-band prototype has been designed and...
The paper describes the method to broaden the bandwidth of circular polarized patch antennas in different forms, including single patch antenna, double-layer patch antenna and antenna array.
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