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Role of Surface Waves in Improving the Reflection Properties of a Millimetre Wave Reflectarray Unit Cell

Ahmad, Ghulam, Underwood, Craig, Brown, Tim and Loh, TH (2017) Role of Surface Waves in Improving the Reflection Properties of a Millimetre Wave Reflectarray Unit Cell In: The Loughborough Antennas & Propagation Conference (LAPC 2017), 13 - 14 November 2017, Loughborough, UK.

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A steady increasing trend towards millimetre waves (mm-waves) for next generation communication has initiated an intensive research in the field of mm-wave antenna technologies. Reflectarray antennas being one of the potential candidates offer significant advantages over parabolic and phased array antennas at mm-wave bands. In a well-designed reflectarray, the overall performance is mainly determined by its comprising unit cell(s). Most of the recent reflectarray designs are based on printed microstrip technology. It is well known that surface waves get generated in printed microstrip technology and contribute to loss in the radiated signal power in the intended direction. This paper analyses the effect of surface waves in the reflection properties of a printed microstrip millimetre wave reflectarray unit cell. The analytical results are compared with measured data at 32 GHz and an excellent agreement was observed. It was observed that surface waves, though generally considered to have malign effects in antennas, play a significant positive role in the reduction of reflection loss magnitude at unit cell level.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Loh, TH
Date : 14 October 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, surface waves.
Depositing User : Melanie Hughes
Date Deposited : 22 Nov 2017 10:53
Last Modified : 16 Jan 2019 19:04

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