A novel wide-band tunable RF phase shifter using a variable optical directional coupler

Ghorbani, K, Mitchell, A, Waterhouse, R and Austin, M 1999, 'A novel wide-band tunable RF phase shifter using a variable optical directional coupler', IEEE Transactions on Microwave Theory and Techniques, vol. 47, no. 5, pp. 645-648.


Document type: Journal Article
Collection: Journal Articles

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Title A novel wide-band tunable RF phase shifter using a variable optical directional coupler
Author(s) Ghorbani, K
Mitchell, A
Waterhouse, R
Austin, M
Year 1999
Journal name IEEE Transactions on Microwave Theory and Techniques
Volume number 47
Issue number 5
Start page 645
End page 648
Total pages 3
Publisher IEEE
Abstract We present a novel RF phase-shifter design with a usable bandwidth of 80:1. The design is verified through demonstration of a proof of concept device, consisting of a readily available voltage variable optical coupler fabricated from LiNbO3, combined with an fiber-optic delay line. The design is analyzed theoretically and measurement of the device confirms the predicted range of operation. Methods of extension of this range of operation are discussed
Subject Microwave and Millimetrewave Theory and Technology
Keyword(s) optical beamforming
optical directional coupler
phase array
true time delay
lab-on-a-chip
DOI - identifier 10.1109/22.763169
Copyright notice © 1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ISSN 0018-9480
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