Frequency optimization of permeability metamaterial for enhanced resolution

Ali, Hassan; Nasidi, Ibrahim; Hao, Ran; Li, Er‐Ping

doi:10.1364/ao.58.003200

Cited by 1 publication

(2 citation statements)

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“…Retrieved μ and ε response of these materials introduce an effective medium, which is resonant at the working frequency due to material's internal inductance and capacitance. μ and ε of material generate pass bands or stop bands for EM waves to exhibit material's significance for multiple applications like wireless networks, radars, transmissions lines, magnetic resonance imaging (MRI), solar panels, and cellular communications 20‐31 …”

Section: Introductionmentioning

confidence: 99%

“…μ and ε of material generate pass bands or stop bands for EM waves to exhibit material's significance for multiple applications like wireless networks, radars, transmissions lines, magnetic resonance imaging (MRI), solar panels, and cellular communications. [20][21][22][23][24][25][26][27][28][29][30][31] Motivated by previous research, we propose polarization dependent negative permittivity controlled compact energy absorber with a thickness of 1.05 and 42 mm in diameter. The equivalent circuit model and synthesis of stop band creation of energy absorber are studied through absorber's 2 port transmission network.…”

Section: Introductionmentioning

confidence: 99%

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Stop band blocking window modeling with energy absorber in 5G mid‐band cellular communications

Ali

Yan

Ahmed

et al. 2021

Int J RF Mic Comp-Aid Eng

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A polarization dependent negative permittivity controlled energy absorber is proposed. The preparatory study includes a unique design of 5G cell phone radiating patch antenna (RPA) centring at Sub‐6 Mid‐band frequency range from 3.3 to 3.8 GHz. The proposed configuration exhibits the energy absorptance efficiency of the absorber when attached with 5G cell phone RPA, where absorber will protect the human brain from exposure of radio frequency fields in mobile phone applications. In proposed setup, we vary the geometrical parameters as well as the electrical value of lumped inductor element of the energy absorber and obtained stop band blocking window with comparative study to restrict the specific absorption rate and power/energy flow radiating from RPA toward the simulated human's brain. Moreover, the absorber does not significantly creates mismatch losses, nor effects the voltage standing wave ratio of RPA and hence a promising application to avoid the health hazards as well as for the safety compliance of 5G technology.

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Section: Introductionmentioning

confidence: 99%