Compact Leaky SIW Feeder Offering TEM Parallel Plate Waveguide Launching

Victoria Gomez-Guillamon Buendia; Symon K. Podilchak; Davide Comite; Paolo Baccarelli; Paolo Burghignoli; Jose Luis Gomez Tornero; George Goussetis

doi:10.1109/ACCESS.2019.2893483

IEEE Access (Jan 2019)

Compact Leaky SIW Feeder Offering TEM Parallel Plate Waveguide Launching

Victoria Gomez-Guillamon Buendia,
Symon K. Podilchak,
Davide Comite,
Paolo Baccarelli,
Paolo Burghignoli,
Jose Luis Gomez Tornero,
George Goussetis

Affiliations

Victoria Gomez-Guillamon Buendia: Institute of Sensors, Signals, and Systems, School of Engineering and Physical Sciences, Edinburgh Campus, Heriot-Watt University, Edinburgh, U.K.
Symon K. Podilchak: ORCiD; Institute of Sensors, Signals, and Systems, School of Engineering and Physical Sciences, Edinburgh Campus, Heriot-Watt University, Edinburgh, U.K.
Davide Comite: Department of Information Engineering, Electronics and Telecommunications, La Sapienza University of Rome, Rome, Italy
Paolo Baccarelli: Department of Engineering, Roma Tre University, Rome, Italy
Paolo Burghignoli: Department of Information Engineering, Electronics and Telecommunications, La Sapienza University of Rome, Rome, Italy
Jose Luis Gomez Tornero: Department of Communication and Information Technologies, Universidad Politecnica de Cartagena, Cartagena, Spain
George Goussetis: Institute of Sensors, Signals, and Systems, School of Engineering and Physical Sciences, Edinburgh Campus, Heriot-Watt University, Edinburgh, U.K.

DOI: https://doi.org/10.1109/ACCESS.2019.2893483
Journal volume & issue: Vol. 7
pp. 13373 – 13382

Abstract

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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.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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