A Microwave Gaussian-Beam Launcher With An Active Aperture-Blockage To Control The Spot-Size Of The Beam

    Authors

    C. L. Gu; P. S. Neelakanta; V. Ungvichian;P. F. Wahid

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    IEEE Trans. Microw. Theory Tech.

    Keywords

    Engineering, Electrical & Electronic

    Abstract

    A method of controlling the spot-size of a focused microwave Gaussian-beam using an active aperture-blockage is described. The Gaussian-beam launcher consists of an open-ended scalar-horn with a dielectric hyperhemisphere at its aperture. Also included is an AgI-pellet at the aperture-center with a provision to heat it with an external dc source. The scalar-horn plus the dielectric lens launch a Gaussian-beam; and, the AgI pellet when heated, becomes a superionic conductor offering an aperture-blockage. This results in a variation or the spot-size of the emergent-beam. Theoretical results and experimental data are furnished and compared.

    Journal Title

    Ieee Transactions on Microwave Theory and Techniques

    Volume

    42

    Issue/Number

    3

    Publication Date

    1-1-1994

    Document Type

    Note

    Language

    English

    First Page

    520

    Last Page

    522

    WOS Identifier

    WOS:A1994NG44500023

    ISSN

    0018-9480

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