%V 71
%J IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
%A Dwi Astuti Cahyasiwi
%T Orthogonal Resonators for Circularly Polarized
Filtering Antenna Using a Single Feedline
%I IEEE
%L repository29528
%P 4227-4235
%X Polarization diversity is an antenna feature that has
been widely researched to increase the capacity of a wireless
communication system. The conceptual theory of polarization
states that all polarization vectors can be decomposed into two
orthogonal electric field vector modes. This study proposes a
novel framework to bridge the gap between circular polarization
(CP) technique and filtering antenna design using two orthogonal
resonators with the ability to represent any polarization. The
proposed method combines the techniques of antenna–filter
and CP design into a single integrated step. To achieve the
second-order antenna–filter integration and generate CP, the two
orthogonal resonators modeled as a rectangular radiator and
a λ/4 resonator combined. The CP filtering antenna operates
at a frequency of 4.65 GHz, with an impedance bandwidth of
4.7%, an axial ratio (AR) bandwidth of 3.2%, and a gain of
6.2-dBi. To validate the CP filtering antenna, simulations and
measurements were performed, and the results were found to be
in good agreement.
%N 10