Fabrication and Characterization of a W-Band Cylindrical Dielectric Resonator Antenna-Coupled Niobium MicrobolometerReportar como inadecuado




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International Journal of Antennas and Propagation - Volume 2015 2015, Article ID 736291, 6 pages -

Research Article

Prince Sultan Advanced Technologies Research Institute PSATRI, King Saud University, Riyadh 11421, Saudi Arabia

Electrical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia

Electrical and Computer Engineering Department, Concordia University, Montreal, QC, Canada H3G 1M8

KACST Technology Innovation Center in RFTONICS, King Saud University, Riyadh 11421, Saudi Arabia

Received 1 October 2014; Revised 28 December 2014; Accepted 28 December 2014

Academic Editor: Paolo Burghignoli

Copyright © 2015 M. Abdel-Rahman et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report on the fabrication and characterization of a novel antenna-coupled detector configuration for detection at 94 GHz, a coplanar waveguide- CPW- fed, slot-excited twin dielectric resonator antenna- DRA- coupled niobium Nb microbolometer. The antenna is based on two low permittivity cylindrical dielectric resonators CDRs excited by rectangular slots placed below the CDRs. The antenna resonant currents are fed to an Nb microbolometer by the means of a CPW feed. The ceramic DRA structure is manufactured using a novel fabrication process that enables patterning an SU-8–Alumina Al2O3 nanopowder composite using conventional photolithography. The detector measured a voltage responsivity of 0.181 V-W at a modulation frequency of 150 Hz. The detector measured a time constant of 1.94 μs. The antenna radiation pattern of the developed detector configuration was measured and shows a good agreement with the simulation.





Autor: M. Abdel-Rahman, M. Kamran Saleem, Najeeb Al-Khalli, Nacer Debbar, Majeed A. S. Alkanhal, and Abdelrazik Sebak

Fuente: https://www.hindawi.com/



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