Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas

Yakir Hadad; Amir Shlivinski

doi:10.1109/APS/URSI47566.2021.9704521

Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas

Yakir Hadad, Amir Shlivinski

School of Electrical Engineering

Ben-Gurion University of the Negev

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The Chu bound, developed under the assumptions of passivity, linearity, and time-invariance sets a lower limit on the quality factor of a small antenna. This with the gain properties of the antenna dictates its maximal attainable gain-bandwidth product of an antenna. By revoking the LTI assumption of the properties e.g., by allowing time variation of the antenna properties, better performance may be achieved. In the following presentation we specifically discuss the effect of time-modulation of the antenna structure on the gain-bandwidth product of a system of three coupled antennas. It is shown that time-modulation may give better results beyond that obtained for the corresponding LTI antenna system.

Original language	English
Title of host publication	2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	405-406
Number of pages	2
ISBN (Electronic)	9781728146706
DOIs	https://doi.org/10.1109/APS/URSI47566.2021.9704521
State	Published - 2021
Event	2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Singapore, Singapore Duration: 4 Dec 2021 → 10 Dec 2021

Publication series

Name	2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings

Conference

Conference	2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021
Country/Territory	Singapore
City	Singapore
Period	4/12/21 → 10/12/21

Funding

Funders	Funder number
Israel Science Foundation	1353/19

Keywords

Linear Time Variant Antenna
Time Modulated Antenna

Access to Document

10.1109/APS/URSI47566.2021.9704521

Cite this

Hadad, Y., & Shlivinski, A. (2021). Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas. In 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings (pp. 405-406). (2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APS/URSI47566.2021.9704521

Hadad, Yakir ; Shlivinski, Amir. / Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas. 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. pp. 405-406 (2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings).

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abstract = "The Chu bound, developed under the assumptions of passivity, linearity, and time-invariance sets a lower limit on the quality factor of a small antenna. This with the gain properties of the antenna dictates its maximal attainable gain-bandwidth product of an antenna. By revoking the LTI assumption of the properties e.g., by allowing time variation of the antenna properties, better performance may be achieved. In the following presentation we specifically discuss the effect of time-modulation of the antenna structure on the gain-bandwidth product of a system of three coupled antennas. It is shown that time-modulation may give better results beyond that obtained for the corresponding LTI antenna system.",

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author = "Yakir Hadad and Amir Shlivinski",

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series = "2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings",

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Hadad, Y & Shlivinski, A 2021, Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas. in 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings. 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 405-406, 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021, Singapore, Singapore, 4/12/21. https://doi.org/10.1109/APS/URSI47566.2021.9704521

Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas. / Hadad, Yakir; Shlivinski, Amir.
2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. p. 405-406 (2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - The Chu bound, developed under the assumptions of passivity, linearity, and time-invariance sets a lower limit on the quality factor of a small antenna. This with the gain properties of the antenna dictates its maximal attainable gain-bandwidth product of an antenna. By revoking the LTI assumption of the properties e.g., by allowing time variation of the antenna properties, better performance may be achieved. In the following presentation we specifically discuss the effect of time-modulation of the antenna structure on the gain-bandwidth product of a system of three coupled antennas. It is shown that time-modulation may give better results beyond that obtained for the corresponding LTI antenna system.

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Hadad Y, Shlivinski A. Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas. In 2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2021. p. 405-406. (2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings). doi: 10.1109/APS/URSI47566.2021.9704521

Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas

Abstract

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Keywords

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