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PIER PIER B PIER C PIER M PIER Letters
2013-04-23
A Spiral Shaped Slot as a Broad-Band Slotted Waveguide Antenna
By
Ali Daliri,

    Dr. Ali Daliri

    School of Aerospace, Mechanical & Manufacturing Engineering

    RMIT University

    Australia

    Homepage

Amir Galehdar,

    Dr. Amir Galehdar

    School of Electrical and Computer Engineering

    RMIT University

    Australia

    Homepage

Wayne Rowe,

    Prof. Wayne Rowe

    Electrical and Computer Engineering

    RMIT University

    Australia

    Homepage

Kamran Ghorbani,

    Prof. Kamran Ghorbani

    RMIT University

    Austria

    Homepage

Sabu John,

    Dr. Sabu John

    School of Aerospace, Mechanical and Manufacturing Engineering

    RMIT University

    Australia

    Homepage

Chun H. Wang

    Dr. Chun H. Wang

    School of Aerospace, Mechanical and Manufacturing Engineering

    RMIT University

    Australia

    Homepage

Progress In Electromagnetics Research, Vol. 139, 177-192, 2013
doi:10.2528/PIER13031304
Abstract
The utility of slotted waveguide antennas would be maximized if the bandwidth of the radiating elements matched that available in the waveguide. This was achieved using a spiral shaped slot cut through the broad-wall of a rectangular waveguide. The predicted total efficiency and peak realized gain were relatively uniform across the entire bandwidth. The current distribution around the slot was predicted to be similar to that around a conventional, center fed, slot spiral antenna, indicating similarity of radiation mechanisms. Finally, the antenna patterns for spiral shaped slots in waveguides manufactured from copper and carbon fibre reinforced polymer (CFRP) were shown to be similar to that predicted.
Citation
Ali Daliri, Amir Galehdar, Wayne Rowe, Kamran Ghorbani, Sabu John, and Chun H. Wang, "A Spiral Shaped Slot as a Broad-Band Slotted Waveguide Antenna," Progress In Electromagnetics Research, Vol. 139, 177-192, 2013.
doi:10.2528/PIER13031304
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