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Mixer-Duplexer-Antenna Leaky-Wave System Based on Periodic Space-Time Modulation.

Authors :
Taravati, Sajjad
Caloz, Christophe
Source :
IEEE Transactions on Antennas & Propagation; Feb2017, Vol. 65 Issue 2, p442-452, 11p
Publication Year :
2017

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. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
0018926X
Volume :
65
Issue :
2
Database :
Complementary Index
Journal :
IEEE Transactions on Antennas & Propagation
Publication Type :
Academic Journal
Accession number :
121159237
Full Text :
https://doi.org/10.1109/TAP.2016.2632735