A spiral shaped slot as a broad-band slotted waveguide antenna

Daliri, A, Galehdar, A, Rowe, W, Ghorbani, K, Wang, C and John, S 2013, 'A spiral shaped slot as a broad-band slotted waveguide antenna', Progress In Electromagnetics Research (PIER), vol. 139, pp. 177-192.

Document type: Journal Article
Collection: Journal Articles

Title A spiral shaped slot as a broad-band slotted waveguide antenna
Author(s) Daliri, A
Galehdar, A
Rowe, W
Ghorbani, K
Wang, C
John, S
Year 2013
Journal name Progress In Electromagnetics Research (PIER)
Volume number 139
Start page 177
End page 192
Total pages 16
Publisher EMW Publishing
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.
Subject Antennas and Propagation
Microwave and Millimetrewave Theory and Technology
Mechanical Engineering not elsewhere classified
Keyword(s) Spiral antenna
slotted waveguide antenna
broad band
Copyright notice © Copyright 2013 EMW Publishing. All Rights Reserved
ISSN 1070-4698
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