Tunable millimetre-wave phase shifting surfaces using piezoelectric actuators

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Tunable millimetre-wave phase shifting surfaces using piezoelectric actuators. / Mavridou, Marina; Feresidis, Alexandros; Gardner, Peter; Hall, Peter.

In: Microwaves, Antennas & Propagation, Vol. 8, No. 11, 19.08.2014, p. 829-834.

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@article{444f95949396481480f586b1835ff758,
title = "Tunable millimetre-wave phase shifting surfaces using piezoelectric actuators",
abstract = "A novel technique for tuning periodic phase shifting surfaces at millimetre-waves is presented. The proposed structure consists of a periodic surface placed over a ground plane creating an air cavity. The periodic surface is formed by a two-dimensional array of metallic square loop elements printed on a 0.8 mm thick dielectric substrate. When excited by a plane wave, the structure is acting as an artificial impedance surface, reflecting the incident wave with a wide range of phase values within a specific frequency band. The tuning is achieved by means of a small number of piezoelectric actuators which support the periodic surface. The actuators are placed around the periodic surfaces thereby not interfering with the radiation performance and introducing no losses. They produce a displacement between the periodic surface and the ground plane when voltage is applied, which in turn changes the reflection phase response of the structure. Full wave periodic simulations have been carried out in three-dimensional electromagnetic simulation software (CST Microwave StudioTM) to extract the reflection characteristics and evaluate the expected tuning range of the proposed structure. A prototype has been fabricated and measured validating the concept. View full abstract» ",
author = "Marina Mavridou and Alexandros Feresidis and Peter Gardner and Peter Hall",
year = "2014",
month = aug
day = "19",
doi = "10.1049/iet-map.2013.0670",
language = "English",
volume = "8",
pages = "829--834",
journal = "Microwaves, Antennas & Propagation",
issn = "1751-8733",
publisher = "Institution of Engineering and Technology",
number = "11",

}

RIS

TY - JOUR

T1 - Tunable millimetre-wave phase shifting surfaces using piezoelectric actuators

AU - Mavridou, Marina

AU - Feresidis, Alexandros

AU - Gardner, Peter

AU - Hall, Peter

PY - 2014/8/19

Y1 - 2014/8/19

N2 - A novel technique for tuning periodic phase shifting surfaces at millimetre-waves is presented. The proposed structure consists of a periodic surface placed over a ground plane creating an air cavity. The periodic surface is formed by a two-dimensional array of metallic square loop elements printed on a 0.8 mm thick dielectric substrate. When excited by a plane wave, the structure is acting as an artificial impedance surface, reflecting the incident wave with a wide range of phase values within a specific frequency band. The tuning is achieved by means of a small number of piezoelectric actuators which support the periodic surface. The actuators are placed around the periodic surfaces thereby not interfering with the radiation performance and introducing no losses. They produce a displacement between the periodic surface and the ground plane when voltage is applied, which in turn changes the reflection phase response of the structure. Full wave periodic simulations have been carried out in three-dimensional electromagnetic simulation software (CST Microwave StudioTM) to extract the reflection characteristics and evaluate the expected tuning range of the proposed structure. A prototype has been fabricated and measured validating the concept. View full abstract»

AB - A novel technique for tuning periodic phase shifting surfaces at millimetre-waves is presented. The proposed structure consists of a periodic surface placed over a ground plane creating an air cavity. The periodic surface is formed by a two-dimensional array of metallic square loop elements printed on a 0.8 mm thick dielectric substrate. When excited by a plane wave, the structure is acting as an artificial impedance surface, reflecting the incident wave with a wide range of phase values within a specific frequency band. The tuning is achieved by means of a small number of piezoelectric actuators which support the periodic surface. The actuators are placed around the periodic surfaces thereby not interfering with the radiation performance and introducing no losses. They produce a displacement between the periodic surface and the ground plane when voltage is applied, which in turn changes the reflection phase response of the structure. Full wave periodic simulations have been carried out in three-dimensional electromagnetic simulation software (CST Microwave StudioTM) to extract the reflection characteristics and evaluate the expected tuning range of the proposed structure. A prototype has been fabricated and measured validating the concept. View full abstract»

U2 - 10.1049/iet-map.2013.0670

DO - 10.1049/iet-map.2013.0670

M3 - Article

VL - 8

SP - 829

EP - 834

JO - Microwaves, Antennas & Propagation

JF - Microwaves, Antennas & Propagation

SN - 1751-8733

IS - 11

ER -