A planar and low-cost parallel-plate waveguide (PPW) launcher based on substrate integrated waveguide (SIW) technology is proposed. It can launch the fundamental TEM mode with a collimated wave front into a PPW structure while also being low profile and easy to fabricate. The launcher is implemented using a network of SIW transmission lines and its design is based on the leaky-wave (LW) theory. In our proposed structure, a selection of the SIW lines is made to leak power into the desired PPW region by means of a partially reflective surface, enabling planar wave front propagation of the TEM mode where efficiency values of over 90% are achieved. Measurements of a fabricated prototype are also reported at 15 GHz to demonstrate the design procedure and validate structure operation. When compared with similar co-axial and metallic waveguide launchers, our proposed SIW structure represents a compact, integrated, and unique design solution which may be useful to feed planar parallel-plate slot arrays and end-fire antennas. In addition, our novel and simple approach for PPW excitation can also be applied to other parallel-plate-based guides, low-cost transitions, and compact dividing/combining circuits for a new antenna and non-radiating LW feed systems at microwave and millimeter-wave frequencies.


    Access

    Download


    Export, share and cite



    Title :

    Compact leaky SIW feeder offering TEM parallel plate waveguide launching



    Publication date :

    2019-01-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629





    Plate feeder

    CHEN QIONG / LI FEIJUN / LI JIAJUN et al. | European Patent Office | 2020

    Free access

    LEAKY CHARACTERISTICS OF MODIFIED NRD GUIDE WITH FINITE PARALLEL PLATE LENGTH

    Wang, X. / Xu, S. | British Library Online Contents | 2004


    Dual-Core Leaky Waveguide-Based Filters for Erbium-Doped Waveguide Amplifier

    Ashok, N. / Rastogi, V. | British Library Online Contents | 2013