A modified square loop antenna radiating a circularly polarized conical beam: Its application to tilted beam formation with enhanced gain

Abstract

A square loop antenna is newly analyzed to radiate a conical beam, using the moment method. The loop has a single feed and two corners are truncated for circularly polarized (CP) radiation. It is revealed that the antenna shows a gain of 9 dB, which is higher than that of a conventional loop by 2 dB. This leads to further analysis of a modified square double-loop antenna that radiates a CP tilted beam. It is found that an enhanced gain can be obtained in comparison with that of a conventional double-loop antenna by 1 dB.