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Reconfigurable Liquid Crystal Reflectarray with Extended Tunable Phase Range

Bildik, Saygin and Dieter, Sabine and Fritzsch, Carsten and Frei, Michael and Fischer, Christoph and Menzel, Wolfgang and Jakoby, Rolf (2011):
Reconfigurable Liquid Crystal Reflectarray with Extended Tunable Phase Range.
Proceedings of European Microwave Conference 2011, [Conference or Workshop Item]

Abstract

A coupled microstrip structure is investigated consisting of three fingerlike patches which are designed for liquid crystal technology. A unit cell based on the coupled structure is realized and characterized with a waveguide simulator. The proposed structure has a measured tunable phase range of 582°. It is used as an antenna element to design a reconfigurable reflectarray. The realized antenna is composed of 16x16 elements, and a slotted substrate integrated waveguide is used to illuminate it. Antenna patterns for desired main beam directions are synthesized at W-band with a developed Particle Swarm Optimization algorithm. Beam steering capability of the reflectarray is presented by steering the main beam to various angles applying the bias voltages obtained from the optimization algorithm.

Item Type: Conference or Workshop Item
Erschienen: 2011
Creators: Bildik, Saygin and Dieter, Sabine and Fritzsch, Carsten and Frei, Michael and Fischer, Christoph and Menzel, Wolfgang and Jakoby, Rolf
Title: Reconfigurable Liquid Crystal Reflectarray with Extended Tunable Phase Range
Language: English
Abstract:

A coupled microstrip structure is investigated consisting of three fingerlike patches which are designed for liquid crystal technology. A unit cell based on the coupled structure is realized and characterized with a waveguide simulator. The proposed structure has a measured tunable phase range of 582°. It is used as an antenna element to design a reconfigurable reflectarray. The realized antenna is composed of 16x16 elements, and a slotted substrate integrated waveguide is used to illuminate it. Antenna patterns for desired main beam directions are synthesized at W-band with a developed Particle Swarm Optimization algorithm. Beam steering capability of the reflectarray is presented by steering the main beam to various angles applying the bias voltages obtained from the optimization algorithm.

Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Microwave Engineering
18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Event Title: Proceedings of European Microwave Conference 2011
Date Deposited: 27 Jan 2012 15:20
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