Bandwidth enhancement of triple layer microwave absorber using metallic square patch

Bhati, Amit; Hiremath, Kirankumar R.; Dixit, Vivek

doi:10.1007/s00339-018-2219-8

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…It shows metamaterial characteristics at lower resonance with SNG values (Table 1 ). Moreover, it does not require any lumped elements 35 or multilayer substrate 36 , present in all designs proposed by other researchers for the same purpose. The design is compact in terms of effective medium ratio (EMR = ) with the value of 12.49 considering for 2.4 GHz.…”

Section: Discussionmentioning

confidence: 99%

Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications

Hannan

Islam

Faruque

et al. 2021

Sci Rep

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A novel and systematic procedure to design a co-polarized electromagnetic metamaterial (MM) absorber with desired outputs and resonance frequencies for dual-band WiFi signal absorption is presented. The desired resonance frequencies with expected S parameters' values were first designed as an equivalent circuit with extensive analysis and then implemented into frequency-selective MM absorber by numerical simulation with precise LRC elements, satisfying least unit cell area (0.08λ), substrate thickness (0.01λ) and maximum effective medium ratio (12.49). The absorber was simulated for the maximum angle of incidence for both the normal and oblique incidences at co-polarization. The absorptions at the desired resonance frequencies were found at a satisfactory level by both simulation and practical measurement along with a single negative value to ensure metamaterial characteristics. The proposed equivalent circuit analysis approach can help researchers design and engineering co-polarization insensitive MM absorbers using conventional split-ring resonators, with perfection in output and desired resonance frequencies without the necessity of lumped elements or multilayer substrates. The proposed metamaterial can be utilized for SAR reduction, crowdsensing, and other WiFi-related practical applications.

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Section: Discussionmentioning

confidence: 99%