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Design of frequency selective surface using proximity mode coupling and its applications to K u band RCS reduction
Author(s) -
Swaminathan Anand,
Chermakani Saravana Ruban,
Athivel Sathish Periyasamy,
Jeyaraj Josephine Pon Gloria
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32935
Subject(s) - directivity , microstrip antenna , tunable metamaterials , radar cross section , bandwidth (computing) , reduction (mathematics) , microstrip , radar , frequency band , acoustics , patch antenna , optics , coupling (piping) , materials science , radiation , electronic engineering , antenna (radio) , physics , engineering , electrical engineering , telecommunications , metamaterial , mathematics , geometry , metallurgy
Abstract This article proposes a novel approach to design a frequency selective surface (FSS) based on proximity coupling modes. Two closely placed modes given by two different structures are merged to achieve the coupled modes to improve the operation bandwidth (BW). This method reduces the radar cross section (RCS) of the patch antenna without deteriorating the radiation characteristics like gain, directivity, and radiation efficiency. A FSS unit cell of dimension 8 × 8 mm is made into a 3 × 2 array and is placed in the same layer around the microstrip patch antenna for RCS reduction in single layer. The simulated and measured results show the RCSR of 17 dB with a BW of 5.2 GHz in radar K u band.