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International Journal of Antennas and Propagation
Volume 2017, Article ID 7385357, 8 pages
Research Article

Design of an Edge Slotted Waveguide Antenna Array Based on T-Shaped Cross-Section Waveguide

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Correspondence should be addressed to Teng Li; moc.361@jn_gnetil

Received 22 January 2017; Revised 14 May 2017; Accepted 4 June 2017; Published 6 July 2017

Academic Editor: Muhammad Ramlee Kamarudin

Copyright © 2017 Teng Li and Wenbin Dou. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An edge slotted waveguide antenna array based on T-shaped cross-section radiating waveguide is proposed. The T-shaped waveguide is analyzed and designed to operate in dominant mode around the center frequency, which has a lower profile compared with the rectangular one. The radiating slots are etched and rotated alternatively on the broadened top plate without cutting into the adjacent walls. The metal fences are inserted between slots to reduce the mutual coupling and surface wave. Therefore, the sidelobe level in -plane is well suppressed. A 2 × 8 antenna array working at Ka-band is designed and fabricated. The measured results agree well with simulations which demonstrate this novel waveguide structure.