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High-efficiency sub-1 GHz flexible compact rectenna based on parametric antenna-rectifier co-design

High-efficiency sub-1 GHz flexible compact rectenna based on parametric antenna-rectifier co-design
High-efficiency sub-1 GHz flexible compact rectenna based on parametric antenna-rectifier co-design
This work presents a high-efficiency, high-sensitivity, compact flexible rectenna based on a high-impedance folded dipole antenna, for sub-1 GHz license-free applications. A voltage-doubler rectifier is studied parametrically, using Electromagnetic-Harmonic Balance co-simulation, to extract the optimal load and source impedances for maximum power conversion efficiency (PCE), using an iterative source and load tuning approach. The proposed antenna is then studied parametrically and designed to directly conjugate the rectifier’s impedance eliminating the matching network and its associated losses. The integrated rectenna is ultra-compact (area = 0.0122 λ2) and is fabricated on a 25 µm-thick flexible low-cost polyimide substrate. The proposed rectenna achieves a remarkable PCE of 43% and 83% at -20 and -4 dBm, respectively. Furthermore, a 1-V DC output is achieved across a 20 kΩ load (optimal impedance) from -9 dBm input. The rectenna demonstrates a -3 dB (50% relative PCE) fractional-bandwidth of 7.9% (813–880 MHz), covering the 868 MHz license-free band.
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Wagih, Mahmoud
7e7b16ba-0c64-4f95-bd3c-99064055f693
Weddell, Alex S.
3d8c4d63-19b1-4072-a779-84d487fd6f03
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d

Wagih, Mahmoud, Weddell, Alex S. and Beeby, Steve (2020) High-efficiency sub-1 GHz flexible compact rectenna based on parametric antenna-rectifier co-design. IEEE International Microwave Symposium: IEEE Microwave Week, Los Angeles, United States. (In Press)

Record type: Conference or Workshop Item (Paper)

Abstract

This work presents a high-efficiency, high-sensitivity, compact flexible rectenna based on a high-impedance folded dipole antenna, for sub-1 GHz license-free applications. A voltage-doubler rectifier is studied parametrically, using Electromagnetic-Harmonic Balance co-simulation, to extract the optimal load and source impedances for maximum power conversion efficiency (PCE), using an iterative source and load tuning approach. The proposed antenna is then studied parametrically and designed to directly conjugate the rectifier’s impedance eliminating the matching network and its associated losses. The integrated rectenna is ultra-compact (area = 0.0122 λ2) and is fabricated on a 25 µm-thick flexible low-cost polyimide substrate. The proposed rectenna achieves a remarkable PCE of 43% and 83% at -20 and -4 dBm, respectively. Furthermore, a 1-V DC output is achieved across a 20 kΩ load (optimal impedance) from -9 dBm input. The rectenna demonstrates a -3 dB (50% relative PCE) fractional-bandwidth of 7.9% (813–880 MHz), covering the 868 MHz license-free band.

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Accepted/In Press date: 2020
Venue - Dates: IEEE International Microwave Symposium: IEEE Microwave Week, Los Angeles, United States, 2020-08-01

Identifiers

Local EPrints ID: 441183
URI: http://eprints.soton.ac.uk/id/eprint/441183
PURE UUID: a66dae1c-064e-4264-946e-385bc712527e
ORCID for Alex S. Weddell: ORCID iD orcid.org/0000-0002-6763-5460
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 04 Jun 2020 16:30
Last modified: 03 Mar 2021 05:02

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