A SPIRAL SHAPED SLOT AS A BROAD-BAND SLOTTED WAVEGUIDE ANTENNA | Zendy

Ali Daliri | Zendy; Amir Galehdar | Zendy; Wayne S. T. Rowe | Zendy; Kamran Ghorbani | Zendy; Sabu John | Zendy; Chunhui Wang | Zendy

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A SPIRAL SHAPED SLOT AS A BROAD-BAND SLOTTED WAVEGUIDE ANTENNA

Author(s) -

Ali Daliri,

Amir Galehdar,

Wayne S. T. Rowe,

Kamran Ghorbani,

Sabu John,

Chunhui Wang

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier13031304

Subject(s) - spiral (railway) , spiral antenna , antenna (radio) , broad band , waveguide , slot antenna , physics , optics , slotted waveguide , geology , acoustics , telecommunications , engineering , directional antenna , microstrip antenna , coaxial antenna , mechanical engineering

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 e-ciency 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 flbre reinforced polymer (CFRP) were shown to be similar to that predicted.

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