Mixer-Duplexer-Antenna Leaky-Wave System Based on Periodic Space-Time Modulation
Mixer-Duplexer-Antenna Leaky-Wave System Based on Periodic Space-Time Modulation
We present a mixer-duplexer-antenna leaky-wave system based on periodic space-time modulation. This system operates as a full transceiver, where the upconversion and downconversion mixing operations are accomplished via space-time transitions; the duplexing operation is induced by the nonreciprocal nature of the structure, and the radiation operation is provided by the leaky-wave nature of the wave. A rigorous electromagnetic solution is derived for the dispersion relation and field distributions. The system is implemented in the form of a spatio-temporally modulated microstrip leaky-wave structure incorporating an array of subwavelengthly spaced varactors modulated by a harmonic wave. In addition to the overall mixer-duplexer-antenna operation, frequency beam scanning at fixed input frequency is demonstrated as one of the interesting features of the system. A prototype is realized and demonstrated by full-wave and experimental results.
Duplexer, leaky-wave antenna, mixer, nonreciprocity, space-time modulation, transceiver
442-452
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Caloz, Christophe
8c531c3e-4893-47cc-b0f7-d4f3b2425325
February 2017
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Caloz, Christophe
8c531c3e-4893-47cc-b0f7-d4f3b2425325
Taravati, Sajjad and Caloz, Christophe
(2017)
Mixer-Duplexer-Antenna Leaky-Wave System Based on Periodic Space-Time Modulation.
IEEE Transactions on Antennas and Propagation, 65 (2), , [7756320].
(doi:10.1109/TAP.2016.2632735).
Abstract
We present a mixer-duplexer-antenna leaky-wave system based on periodic space-time modulation. This system operates as a full transceiver, where the upconversion and downconversion mixing operations are accomplished via space-time transitions; the duplexing operation is induced by the nonreciprocal nature of the structure, and the radiation operation is provided by the leaky-wave nature of the wave. A rigorous electromagnetic solution is derived for the dispersion relation and field distributions. The system is implemented in the form of a spatio-temporally modulated microstrip leaky-wave structure incorporating an array of subwavelengthly spaced varactors modulated by a harmonic wave. In addition to the overall mixer-duplexer-antenna operation, frequency beam scanning at fixed input frequency is demonstrated as one of the interesting features of the system. A prototype is realized and demonstrated by full-wave and experimental results.
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Published date: February 2017
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Publisher Copyright:
© 1963-2012 IEEE.
Keywords:
Duplexer, leaky-wave antenna, mixer, nonreciprocity, space-time modulation, transceiver
Identifiers
Local EPrints ID: 482640
URI: http://eprints.soton.ac.uk/id/eprint/482640
ISSN: 0018-926X
PURE UUID: 9f8efcce-f24a-4001-94ca-1b5de1f1c0c0
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Date deposited: 11 Oct 2023 16:47
Last modified: 02 May 2024 02:05
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Contributors
Author:
Sajjad Taravati
Author:
Christophe Caloz
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