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To reduce side lobe level of slotted array antennas using nonuniform waveguides
Author(s) -
Khazai Mohammad,
KhalajAmirhosseini Mohammad
Publication year - 2016
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20936
Subject(s) - side lobe , slotted waveguide , waveguide , microwave , offset (computer science) , optics , main lobe , materials science , radiation pattern , acoustics , electrical engineering , optoelectronics , physics , computer science , engineering , slot antenna , telecommunications , antenna (radio) , programming language
In this article, a method is presented to reduce the side lobe level of slotted waveguide array antennas while the gain to be constant. In this method, the H ‐plane dimension of the waveguide is considered as the variable rather than constant. The nonuniformity of waveguide walls obviates the need for offset of slots and thereby reduces the side lobe level of radiation pattern. A slotted nonuniform waveguide is designed at frequency 10 GHz and then fabricated and tested. © 2015 The Authors International Journal of RF and Microwave Computer‐Aided Engineering Published by Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:42–46, 2016.