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A low‐profile microstrip patch array with broadband and wide‐angle scanning characteristics
Author(s) -
Sun Dan,
Yuan Congcong,
Su Pei
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.32853
Subject(s) - materials science , broadband , microstrip antenna , bandwidth (computing) , patch antenna , stripline , optics , microstrip , aperture (computer memory) , optoelectronics , antenna (radio) , acoustics , engineering , electrical engineering , telecommunications , physics
A low‐profile broadband patch array antenna with a wide scanning range is presented at X‐band. The antenna element consists of the stacked patches, the sheet resistances and the metallic posts with a total thickness of 3.27 mm. The stacked patches are excited by a stripline‐fed aperture with four edge patches surrounding the bottom patch. The sheet resistances and the metallic posts provide a solution to ameliorate the matching responses, besides promoting the scanning angle. The simulated active VSWRs are below 2 and 2.6 as scan ranges ± 60° and ± 70°, respectively, over a bandwidth of 40%. As an example, a prototype array with 8 × 8 elements was fabricated to verify the method. Its measured active VSWRs are lower than 2.4 and 2.9 with the maximum losses of 1.6 dB in the scan angles above.