Influence of dielectric substrate on the responsivity of microstrip dipole-antenna-coupled infrared microbolometers

    Authors

    L. Codreanu;G. D. Boreman

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    DETECTOR; Optics

    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. (C) 2002 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    41

    Issue/Number

    10

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    1835

    Last Page

    1840

    WOS Identifier

    WOS:000174812200001

    ISSN

    1559-128X

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