N
N. Grant
Researcher at Queen's University Belfast
Publications - 24
Citations - 738
N. Grant is an academic researcher from Queen's University Belfast. The author has contributed to research in topics: Liquid crystal & Insertion loss. The author has an hindex of 11, co-authored 24 publications receiving 667 citations.
Papers
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Journal ArticleDOI
Design and Measurement of Reconfigurable Millimeter Wave Reflectarray Cells With Nematic Liquid Crystal
TL;DR: In this article, numerical simulations are used to study the electromagnetic scattering from phase agile microstrip reflectarray cells which exploit the voltage controlled dielectric anisotropy property of nematic state liquid crystals (LCs).
Journal ArticleDOI
Liquid Crystal Tunable mm Wave Frequency Selective Surface
W. Hu,Raymond Dickie,Robert Cahill,Harold Gamble,Y. Ismail,Vincent Fusco,David Linton,N. Grant,S.P. Rea +8 more
TL;DR: In this article, a frequency selective surface (FSS) which exploits the dielectric anisotropy of liquid crystals to generate an electronically tunable bandpass filter response at D Band (110-170 GHz) is presented.
Journal ArticleDOI
Liquid-crystal-based reflectarray antenna with electronically switchable monopulse patterns
W. Hu,Muhammad Ismail,Robert Cahill,Jose A. Encinar,Vincent Fusco,Harold Gamble,David Linton,Raymond Dickie,N. Grant,S.P. Rea +9 more
TL;DR: In this article, a printed reflectarray antenna, which generates a beam that can be electronically switched from a sum to a difference radiation pattern, is presented by applying a bias voltage of 20 V to one-half of the aperture, which is constructed above a 500 mum cavity containing liquid crystals.
Journal ArticleDOI
Spatial demultiplexing in the submillimeter wave band using multilayer free-standing frequency selective surfaces
TL;DR: In this paper, a multilayer freestanding slot array is designed to give an insertion loss which is significantly lower than the value obtainable from a conventional dielectric backed printed frequency selective surface (FSS).
Journal ArticleDOI
Submillimeter Wave Frequency Selective Surface With Polarization Independent Spectral Responses
Raymond Dickie,Robert Cahill,Harold Gamble,Vincent Fusco,M. Henry,M. L. G. Oldfield,Peter G. Huggard,P. Howard,N. Grant,Y. Munro,P. de Maagt +10 more
TL;DR: In this paper, the authors report the design, construction and electromagnetic performance of a new freestanding frequency selective surface (FSS) structure which generates coincident spectral responses for dual polarization excitation at oblique angles of incidence.