Influence of Dielectric Substrate on the Responsivity of Microstrip Dipole-Antenna-Coupled Infrared Microbolometers
Applied Optics, Vol. 41, Issue 10, pp. 1835-1840 (2002)
http://dx.doi.org/10.1364/AO.41.001835
Acrobat PDF (1017 KB)
Abstract
We report on the influence of the dielectric substrate on the performance of microstrip dipole-antenna-coupled microbolometers. The location, the width, and the magnitude of the resonance of a printed dipole are altered when the dielectric substrate is backed by a ground plane. A thicker dielectric substrate shifts the antenna resonance toward shorter dipole lengths and leads to a stronger and slower detector response. The incorporation of an air layer into the antenna substrate further increases thermal impedance, leading to an even stronger response and shifting the antenna resonance toward longer dipole lengths.
© 2002 Optical Society of America
OCIS Codes
(040.0040) Detectors : Detectors
(040.3060) Detectors : Infrared
(220.3740) Optical design and fabrication : Lithography
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.5440) Optical devices : Polarization-selective devices
(230.5750) Optical devices : Resonators
Citation
Iulian Codreanu and Glenn D. Boreman, "Influence of Dielectric Substrate on the Responsivity of Microstrip Dipole-Antenna-Coupled Infrared Microbolometers," Appl. Opt. 41, 1835-1840 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-10-1835
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