Lightweight low-profile highly-efficient magnetless isolator comprising two time-modulated loops
Lightweight low-profile highly-efficient magnetless isolator comprising two time-modulated loops
We propose a lightweight compact highly efficient non-magnetic time-modulated isolator based on signal interference in phase-shifted time-modulated loops. The proposed isolator exhibits large isolation level and weak undesired time harmonics. In contrast to the recently proposed space-time-modulated isolators which are governed by progressive unidirectional coupling between the incident wave and the modulation, our isolator is not governed by such a progressive process and therefore possesses a very low-profile. An experimental demonstration of the proposed time-modulated isolator at microwave frequencies is provided, showing strong unidirectional wave transmission through the isolator with more than 27 dB contrast between the forward and backward waves.
isolator, magnetless, nonreciprocity, time modulation
416-419
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
7 June 2021
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
Taravati, Sajjad and Eleftheriades, George V.
(2021)
Lightweight low-profile highly-efficient magnetless isolator comprising two time-modulated loops.
In 2021 IEEE MTT-S International Microwave Symposium, IMS 2021.
vol. 2021-June,
IEEE.
.
(doi:10.1109/IMS19712.2021.9574837).
Record type:
Conference or Workshop Item
(Paper)
Abstract
We propose a lightweight compact highly efficient non-magnetic time-modulated isolator based on signal interference in phase-shifted time-modulated loops. The proposed isolator exhibits large isolation level and weak undesired time harmonics. In contrast to the recently proposed space-time-modulated isolators which are governed by progressive unidirectional coupling between the incident wave and the modulation, our isolator is not governed by such a progressive process and therefore possesses a very low-profile. An experimental demonstration of the proposed time-modulated isolator at microwave frequencies is provided, showing strong unidirectional wave transmission through the isolator with more than 27 dB contrast between the forward and backward waves.
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Published date: 7 June 2021
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Funding Information:
ACKNOWLEDGMENT This work is supported by the Natural Sciences and Engineering Research Council of Canada (NSERC).
Publisher Copyright:
© 2021 IEEE.
Venue - Dates:
2021 IEEE MTT-S International Microwave Symposium, IMS 2021, , Virtual, Atlanta, United States, 2021-06-07 - 2021-06-25
Keywords:
isolator, magnetless, nonreciprocity, time modulation
Identifiers
Local EPrints ID: 482793
URI: http://eprints.soton.ac.uk/id/eprint/482793
ISSN: 0149-645X
PURE UUID: eb1cc7c4-46ce-4d0c-b9e2-a80bf154b904
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Date deposited: 12 Oct 2023 16:45
Last modified: 29 Apr 2024 02:04
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Contributors
Author:
Sajjad Taravati
Author:
George V. Eleftheriades
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