Nonreciprocal phase-shifting in linear magnet-free reconfigurable temporal loops
Nonreciprocal phase-shifting in linear magnet-free reconfigurable temporal loops
Recently, nonreciprocal (NR) phase shifters have attracted a surge of interest thanks to the advent of NR electromagnetic systems, such as NR metasurfaces, nonreciprocal-beam antennas, and invisibility cloaks. To overcome the limitations associated with conventional technologies for realizing NR phase shifters and gyrators, here we propose a magnet-free NR phase shifter comprising temporal loops. The proposed temporal device is lightweight and offers low-profile and linear responses. Such a unique nonmagnetic NR device operates based on the generation of time-harmonic signals and destructive/constructive interferences for the spurious side-band and targeted time harmonics (THs), respectively, at different locations of the structure. We utilize a time-harmonic signal to temporally modulate varactor diodes and control the phase and frequency of two temporal loops. Our temporal NR phase shifter is equipped with low insertion loss, and high power handling. Furthermore, this controllable NR phase shifter is compatible with integrated circuit technology.
linear, magnet-free, nonreciprocity, phase-shifter, telecommunications, Time modulation
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
26 April 2024
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Taravati, Sajjad
(2024)
Nonreciprocal phase-shifting in linear magnet-free reconfigurable temporal loops.
In 18th European Conference on Antennas and Propagation, EuCAP 2024.
IEEE.
5 pp
.
(doi:10.23919/EuCAP60739.2024.10501688).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Recently, nonreciprocal (NR) phase shifters have attracted a surge of interest thanks to the advent of NR electromagnetic systems, such as NR metasurfaces, nonreciprocal-beam antennas, and invisibility cloaks. To overcome the limitations associated with conventional technologies for realizing NR phase shifters and gyrators, here we propose a magnet-free NR phase shifter comprising temporal loops. The proposed temporal device is lightweight and offers low-profile and linear responses. Such a unique nonmagnetic NR device operates based on the generation of time-harmonic signals and destructive/constructive interferences for the spurious side-band and targeted time harmonics (THs), respectively, at different locations of the structure. We utilize a time-harmonic signal to temporally modulate varactor diodes and control the phase and frequency of two temporal loops. Our temporal NR phase shifter is equipped with low insertion loss, and high power handling. Furthermore, this controllable NR phase shifter is compatible with integrated circuit technology.
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More information
Published date: 26 April 2024
Venue - Dates:
18th European Conference on Antennas and Propagation, EuCAP 2024, , Glasgow, United Kingdom, 2024-03-17 - 2024-03-22
Keywords:
linear, magnet-free, nonreciprocity, phase-shifter, telecommunications, Time modulation
Identifiers
Local EPrints ID: 497388
URI: http://eprints.soton.ac.uk/id/eprint/497388
PURE UUID: 1dd6ce07-7202-4428-b187-033a9e8af30c
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Date deposited: 21 Jan 2025 18:02
Last modified: 22 Jan 2025 03:13
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Author:
Sajjad Taravati
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