A Microstrip Patch Electronically Steerable Parasitic Array Radiator (ESPAR) Antenna With Reactance-Tuned Coupling and Maintained Resonance

    Authors

    J. J. Luther; S. Ebadi;X. Gong

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Antennas Propag.

    Keywords

    Beam steering; microstrip antennas; patch antenna; phased arrays; PLANE; Engineering, Electrical & Electronic; Telecommunications

    Abstract

    A new approach to parasitic phased-array antennas is presented. A symmetric two-layer, single-input inexpensive three-element array at 1-GHz employing varactors as tuning mechanisms are designed, fabricated, and measured. The driven element is mutually coupled to two parasitic elements in the H-plane. The varactors are used to control the mutual coupling and beam scanning and to maintain resonance at 1 GHz. A continuous scanning range of -15 to +15 degrees is measured with maintained impedance matching and radiation pattern integrity. The low cost of diode varactors, used in place of expensive phase shifters, allows for more economic fabrication. This is advantageous to applications in point-to-point communication systems, weather, and target tracking radar systems.

    Journal Title

    Ieee Transactions on Antennas and Propagation

    Volume

    60

    Issue/Number

    4

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    1803

    Last Page

    1813

    WOS Identifier

    WOS:000302730500016

    ISSN

    0018-926X

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