Tuning periodic surfaces with piezoelectric actuators

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • School of Electronic, Electrical and Computer Engineering, University of Birmingham

Abstract

A periodic surface with tunable phase response is presented here for operation at around 60GHz. The tuning is achieved by means of piezoelectric actuators. The periodic surface consists of a two dimensional square loop metallic elements array printed on a 0.8mm thick dielectric substrate. It is placed at close proximity (50um) over a ground plane creating an air cavity and acting as a High Impedance Surface (HIS). The actuators are employed to produce a displacement between the periodic surface and the ground plane which in turn changes the reflection phase response of the structure. Full wave periodic analysis has been carried out in 3D electromagnetic simulation software (CST Microwave StudioTM) to extract the reflection characteristics and evaluate the expected tuning range of the proposed structure. A phase shift of 80o degrees has been achieved at 58.5GHz for a displacement of 15um.

Details

Original languageEnglish
Title of host publication8th European Conference on Antennas and Propagation, EuCAP 2014
Publication statusPublished - 1 Jan 2014
Event8th European Conference on Antennas and Propagation, EuCAP 2014 - The Hague, United Kingdom
Duration: 6 Apr 201411 Apr 2014

Conference

Conference8th European Conference on Antennas and Propagation, EuCAP 2014
CountryUnited Kingdom
CityThe Hague
Period6/04/1411/04/14

Keywords

  • Periodic Surfaces, piezoelectric actuators, tunable