Recently, we have shown that by properly arranging two concentric patch antennas excited with different radiating modes, it is possible to generate an electromagnetic field with an anomalous polarization state, resembling the structure of a Mobius strip. In this contribution, we expand this finding by considering a single radiating structure consisting of an inner circular patch excited at its fundamental mode and an outer circular ring excited with a TM31 mode, both operating in circular polarization. Through an analysis based on the phase singularities of composite vortices, we show the possibilities for pattern shaping offered by this configuration. In particular, we demonstrate that the radiation pattern can be properly tailored to emulate that of a bulkier structure, i.e. a dipole placed at a quarter of wavelength from a reflector, thus, obtaining, a sector radiation pattern.
Barbuto, M., Miri, M.-., Alu, A., Bilotti, F., Toscano, A. (2018). Circularly polarized patch antenna with sector radiation pattern. In 2018 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, APSURSI 2018 - Proceedings (pp.497-498). Institute of Electrical and Electronics Engineers Inc. [10.1109/APUSNCURSINRSM.2018.8609162].
Circularly polarized patch antenna with sector radiation pattern
Barbuto M.
Writing – Original Draft Preparation
;Alu A.Membro del Collaboration Group
;Bilotti F.Supervision
;Toscano A.Supervision
2018-01-01
Abstract
Recently, we have shown that by properly arranging two concentric patch antennas excited with different radiating modes, it is possible to generate an electromagnetic field with an anomalous polarization state, resembling the structure of a Mobius strip. In this contribution, we expand this finding by considering a single radiating structure consisting of an inner circular patch excited at its fundamental mode and an outer circular ring excited with a TM31 mode, both operating in circular polarization. Through an analysis based on the phase singularities of composite vortices, we show the possibilities for pattern shaping offered by this configuration. In particular, we demonstrate that the radiation pattern can be properly tailored to emulate that of a bulkier structure, i.e. a dipole placed at a quarter of wavelength from a reflector, thus, obtaining, a sector radiation pattern.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
