R
Raymond Dickie
Researcher at Queen's University Belfast
Publications - 65
Citations - 1688
Raymond Dickie 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 19, co-authored 65 publications receiving 1419 citations.
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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).
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325 GHz Single Layer Sub-Millimeter Wave FSS Based Split Slot Ring Linear to Circular Polarization Convertor
TL;DR: In this paper, a single layer, frequency selective surface based, sub-millimeter wave transmission polarizer is presented that converts incident slant linear 45° polarization into circular polarization upon transmission.
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
Design and Experimental Validation of Liquid Crystal-Based Reconfigurable Reflectarray Elements With Improved Bandwidth in F-Band
Gerardo Perez-Palomino,Paul Baine,Raymond Dickie,Michael Bain,Jose A. Encinar,Robert Cahill,Mariano Barba,Giovanni Toso +7 more
TL;DR: A reconfigurable reflectarray which exploits the dielectric anisotropy of liquid crystals (LC) has been designed to operate in the frequency range from 96 to 104 GHz as discussed by the authors.
Journal ArticleDOI
Design and Demonstration of an Electronically Scanned Reflectarray Antenna at 100 GHz Using Multiresonant Cells Based on Liquid Crystals
Gerardo Perez-Palomino,Mariano Barba,Jose A. Encinar,Robert Cahill,Raymond Dickie,Paul Baine,Michael Bain +6 more
TL;DR: In this paper, the design, fabrication, and measured results are presented for a reconfigurable reflectarray antenna based on liquid crystals (LCs) which operates above 100 GHz. The antenna has been designed to provide beam scanning capabilities over a wide angular range, a large bandwidth, and reduced side-lobe level.