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Polarisation Independent Liquid Crystal 360° Phase Shifter for Optically Generated RF-Signals

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2 Author(s)
Vogel, Wolfgang ; Institute for Electrical and Optical Communication Engineering, University of Stuttgart, Pfaffenwaldring 47, 70550 Stuttgart, Germany, W.vogel@int.uni-stuttgart.de ; Berroth, M.

In this paper a phase shifter for optically generated RF signals at 5 GHz including a liquid crystal (LC) amplitude modulator is presented. A fibre coupled polymer dispersed liquid crystal cell is used to achieve a polarisation independent setup. The phase shifter covers the full 360° range and offers the possibility to adjust phase and amplitude of the RF signal independently. The phase shifter is a key component for optically fed phased array antennas in radar applications and for smart antennas in base stations for wireless telecommunication.

Published in:

Microwave Conference, 2001. 31st European

Date of Conference:

24-26 Sept. 2001