Design Method for Wideband Circularly Polarized Slot Antennas

TitleDesign Method for Wideband Circularly Polarized Slot Antennas
Publication TypeJournal Article
Year of Publication2015
AuthorsA. Narbudowicz, M. John, V. Sipal, X. L. Bao, and M. J. Ammann
Journal TitleIEEE Transactions on Antennas & Propagation
Pagination4271 - 4279
Journal Date07/2015
ISSN Number0018-926X

A compact ultra wideband circularly-polarized slot antenna is proposed with a methodology for automated reoptimization for packaging with proprietary devices. The slot structure employs a dual-feed with an integrated compact ultra wideband phase shifter. The design process involves an advanced optimization algorithm and demonstrates the use of spline curves for generation of circular polarized signals. These allow easy optimization, while preserving phase coherency across a wide band. The prototyped antenna has a circularly-polarized bandwidth of 3.2 GHz - 6.1 GHz (54%).