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A broadband composite complementary double‐split rectangular metamaterial absorber for planar microwave circuits
Author(s) -
Bai Ningfeng,
Shen Jingxuan,
Shen Changsheng,
Sun Xiaohan,
Pan Pan,
Jun Cai,
Feng Jinjun
Publication year - 2019
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.31938
Subject(s) - metamaterial , microwave , ground plane , materials science , printed circuit board , planar , broadband , optics , electronic circuit , optoelectronics , absorption (acoustics) , metamaterial absorber , bandwidth (computing) , composite number , electrical engineering , engineering , telecommunications , physics , computer science , antenna (radio) , composite material , tunable metamaterials , computer graphics (images)
In this article, we present a broadband metamaterial absorber (MA) designed for planar microwave circuits, which focuses on the absorption of an electromagnetic wave (EMW) that flows parallel to the direction of the transmission. This MA consists of complementary double‐split rectangles (CDSRs) with a dielectric layer on top of a metallic ground plane, which can be added to a planar microwave circuit as a bottom layer to absorb the EMWs. With further optimization, a composite CDSR‐MA is proposed that operates between 6.5 GHz and 11.2 GHz and covers X‐band communication frequencies. Modeling and simulation is performed using the CST studio software. The absorption bandwidth of this CCDSR‐MA is 6.5‐11.2 GHz, with absorption above 0.75 and the maximum absorption reaches 0.96 at 10.2 GHz. A sample on a five‐layered circuit board using standard print circuit board technology is fabricated to test this CCDSR‐MA, with an outer dimension of 13.4 mm × 137 mm. The simulation and experimental results agree well with each other.