Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response
In this paper, we propose and demonstrate time-modulated patch antennas able to exhibit opposite polarization ellipticity when operated in transmission or reception, effectively leading to nonreciprocal polarization responses. To this purpose, we merge a patch antenna fed from four symmetrical sides...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9785971/ |
| _version_ | 1818536051827802112 |
|---|---|
| author | James T. S. Do Jiawei Zang Alejandro Alvarez-Melcon Juan Sebastian Gomez-Diaz |
| author_facet | James T. S. Do Jiawei Zang Alejandro Alvarez-Melcon Juan Sebastian Gomez-Diaz |
| author_sort | James T. S. Do |
| collection | DOAJ |
| description | In this paper, we propose and demonstrate time-modulated patch antennas able to exhibit opposite polarization ellipticity when operated in transmission or reception, effectively leading to nonreciprocal polarization responses. To this purpose, we merge a patch antenna fed from four symmetrical sides with a low-frequency time-modulation scheme. This configuration exploits the photonic Aharonov Bohm effect to individually manipulate the phase of surface currents flowing along orthogonal directions on the antenna with the phase of the modulation signals. The polarization states of the radiated/received waves can easily be calculated using diagrams in the Poincaré sphere together with the phase difference of the modulating signals. Experimental results at 2.2 GHz demonstrate high conversion efficiency in the time-modulation process, isolation levels over 40 dB in transmission/reception mode, and tunability to generate/receive electromagnetic waves with arbitrary polarization ellipticity. Our findings may enable exciting applications in full-duplex communications as well as in polarimetric radar, sensing and imaging systems. |
| first_indexed | 2024-12-11T18:33:00Z |
| format | Article |
| id | doaj.art-e25328b5d66f4b1d907334b35d8b2ab0 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-11T18:33:00Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-e25328b5d66f4b1d907334b35d8b2ab02022-12-22T00:54:51ZengIEEEIEEE Access2169-35362022-01-0110590575906710.1109/ACCESS.2022.31794939785971Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization ResponseJames T. S. Do0https://orcid.org/0000-0002-6403-1813Jiawei Zang1https://orcid.org/0000-0002-2084-7255Alejandro Alvarez-Melcon2https://orcid.org/0000-0002-6423-8873Juan Sebastian Gomez-Diaz3https://orcid.org/0000-0002-6852-8317Electrical and Computer Engineering Department, University of California at Davis, Davis, CA, USAChina Academy of Information and Communications Technology, Beijing, ChinaCommunication and Information Technologies Department, Universidad Politecnica de Cartagena, Campus Muralla del Mar, Cuartel de Antigones, Región de Murcia, Cartagena, SpainElectrical and Computer Engineering Department, University of California at Davis, Davis, CA, USAIn this paper, we propose and demonstrate time-modulated patch antennas able to exhibit opposite polarization ellipticity when operated in transmission or reception, effectively leading to nonreciprocal polarization responses. To this purpose, we merge a patch antenna fed from four symmetrical sides with a low-frequency time-modulation scheme. This configuration exploits the photonic Aharonov Bohm effect to individually manipulate the phase of surface currents flowing along orthogonal directions on the antenna with the phase of the modulation signals. The polarization states of the radiated/received waves can easily be calculated using diagrams in the Poincaré sphere together with the phase difference of the modulating signals. Experimental results at 2.2 GHz demonstrate high conversion efficiency in the time-modulation process, isolation levels over 40 dB in transmission/reception mode, and tunability to generate/receive electromagnetic waves with arbitrary polarization ellipticity. Our findings may enable exciting applications in full-duplex communications as well as in polarimetric radar, sensing and imaging systems.https://ieeexplore.ieee.org/document/9785971/Time-modulationnonreciprocitypatch antennaspolarization |
| spellingShingle | James T. S. Do Jiawei Zang Alejandro Alvarez-Melcon Juan Sebastian Gomez-Diaz Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response IEEE Access Time-modulation nonreciprocity patch antennas polarization |
| title | Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response |
| title_full | Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response |
| title_fullStr | Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response |
| title_full_unstemmed | Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response |
| title_short | Time-Modulated Patch Antennas With Tunable and Nonreciprocal Polarization Response |
| title_sort | time modulated patch antennas with tunable and nonreciprocal polarization response |
| topic | Time-modulation nonreciprocity patch antennas polarization |
| url | https://ieeexplore.ieee.org/document/9785971/ |
| work_keys_str_mv | AT jamestsdo timemodulatedpatchantennaswithtunableandnonreciprocalpolarizationresponse AT jiaweizang timemodulatedpatchantennaswithtunableandnonreciprocalpolarizationresponse AT alejandroalvarezmelcon timemodulatedpatchantennaswithtunableandnonreciprocalpolarizationresponse AT juansebastiangomezdiaz timemodulatedpatchantennaswithtunableandnonreciprocalpolarizationresponse |