Integration of three-dimensional high-Q filters with aperture antennas and bandwidth enhancement utilising surface waves

    Authors

    Y. Yusuf;X. Gong

    Comments

    Authors: contact us about adding a copy of your work at [email protected]

    Abbreviated Journal Title

    IET Microw. Antennas Propag.

    Keywords

    RESONATORS; Engineering, Electrical & Electronic; Telecommunications

    Abstract

    Seamless integration of three-dimensional cavity filters with a new antenna is presented. The antenna consists of an open-ended waveguide aperture mounted on a ground plane. The energy coupling between the last cavity resonator and free space, which is related to the external quality (Q) factor of the integrated filter/antenna system, can be significantly enhanced. The low external Q factor (Q(ext)), which is necessary for the design of wide-band filter/antenna systems, is due to the excitation and radiation of surface waves. A three-pole cavity filter integrated with the proposed antenna is demonstrated at X band. The centre frequency and fractional bandwidth of the filter/antenna system are 10.2 GHz and 34.0%, respectively, in simulations. A prototype filter/antenna system is fabricated and measured. Good agreement between the simulated and measured results is observed.

    Journal Title

    Iet Microwaves Antennas & Propagation

    Volume

    7

    Issue/Number

    7

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    468

    Last Page

    475

    WOS Identifier

    WOS:000321709800002

    ISSN

    1751-8725

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