Design and analysis of a compact ultrathin ultra‐wideband metamaterial absorber with near to unity absorption for Ku‐band. Issue 4 (4th January 2022)

• Record Type: Journal Article
• Authors: Puri, Vishal; Singh, Hari Shankar
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 4(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-01-04
• Subjects: absorber -- metamaterial -- microwave -- ultrathin -- ultra‐wideband; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23069
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: The proposed work intend to develop a compact ultrathin ultra‐wideband (UWB) metamaterial absorber with a feature of near to unity absorption. The proposed absorber is identified by one consolidated patch in combination with L‐shaped patches. The proposed absorber provides more than 97% absorption from 13.6 to 18.5 GHz, the operating band of the absorber is ultra‐wide with a bandwidth of 4.9 GHz. The proposed structure exhibits full width half maximum (FWHM) of approximately 6.6 GHz from 12.5 to 19.1 GHz. The design of the structure is having a thickness of 0.072 λ 0 relative to the lowest frequency (at 13.58 GHz) of the UWB. The structure with compact size (9 mm × 9 mm × 1.6 mm) compensates for the marginal rise in dimension with ultra‐wideband absorption having an absorptivity of above 97% in comparison to existing UWB absorber available in commercially exploitable microwave frequency. The evolution process incorporates incremental changes in the design of the absorber thereby witnessing experimentally verified more than 97% absorptivity. The in‐depth analysis of the proposed structure is done with incident and polarisation angle analysis. The current and field distribution validates the effectiveness of the UWB metamaterial based microwave absorber.