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Millimetre Wave Reflectarray Antenna Unit Cell Measurements

Ahmad, Ghulam, Brown, Tim, Underwood, Craig and Loh, TH (2017) Millimetre Wave Reflectarray Antenna Unit Cell Measurements In: The Loughborough Antennas & Propagation Conference (LAPC 2017), 13 - 14 November 2017, Loughborough, UK.

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Abstract

Reflectarray antennas are a potential candidate solution to realize high gains at millimetre waves (mm-waves). A reflectarray contains a large number of spatially illuminated unit cells. The performance of a good reflectarray design is manifested by the behaviour of its comprising unit cells. An established technique to characterise a unit cell is by placing it inside a waveguide to achieve periodic boundary conditions. This usually requires custom waveguide products; making the tests difficult and expensive. Additionally, when the unit cells are reconfigurable as in a smart reflectarray it is hard to take the DC bias lines out of the waveguide without using custom made waveguide parts. This contribution address the issue of unit cell placement inside the waveguide and proposes simple unit cell structures to avoid custom made waveguide parts. The idea was verified by measuring a series of unit cells at mm-waves in various configurations and a practically acceptable agreement was found. The proposed structures greatly simplify the reconfigurable unit cell testing.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Ahmad, Ghulamg.ahmad@surrey.ac.ukUNSPECIFIED
Brown, TimT.Brown@surrey.ac.ukUNSPECIFIED
Underwood, CraigC.Underwood@surrey.ac.ukUNSPECIFIED
Loh, THUNSPECIFIEDUNSPECIFIED
Date : 14 November 2017
Copyright Disclaimer : Copyright 2017 IET. This paper is a postprint of a paper submitted to and accepted for publication in LAPC 2017 Proceedings and is subject to Institution of Engineering and Technology Copyright. The copy of record will be available at the IET Digital Library.
Uncontrolled Keywords : mm-waves, reflectarrays, unit cell, measurement
Depositing User : Melanie Hughes
Date Deposited : 22 Nov 2017 11:13
Last Modified : 22 Nov 2017 11:13
URI: http://epubs.surrey.ac.uk/id/eprint/844986

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