A 2.5-D miniaturized metamaterial absorber with minimal frequency deviation at large incident angles for both TE and TM modes at low frequency

Fu, Bin; Wan, Guobin; Ma, Xiaoqian; Chen, Yu-Xu; Jiao, Xin‐Hui

doi:10.1016/j.optcom.2023.129471

Optics Communications

2023

DOI: 10.1016/j.optcom.2023.129471

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A 2.5-D miniaturized metamaterial absorber with minimal frequency deviation at large incident angles for both TE and TM modes at low frequency

Bin Fu

Guobin Wan

Xiaoqian Ma

et al.

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Cited by 4 publications

References 27 publications

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Low-frequency magnetic microwave absorber using reactive ground for extended bandwidth

Wan

et al. 2023

Journal of Applied Physics

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A design method to extend the operating bandwidth of a low-frequency magnetic microwave absorber is presented. According to the mapped impedance distribution from the design objective, a synthesized reactive ground consisting of a triple-ring array, instead of the perfect electric conductor (PEC), is conveniently placed at the back of a commercially available magnetic sheet to realize impedance matching. Compared with the conventional PEC, the reactive ground extends the operating bandwidth of reflection coefficient being less than −10 dB by introducing four consecutive absorption peaks so that the optimized structure achieves broadband absorption from 2.3 to 4.3 GHz with a thickness of 0.027 times the free-space wavelength at the lowest operating frequency and a 60.6% fractional bandwidth which is nearly two times that of the conventional structure. The physical mechanism is further investigated through the distributions of current flow and power loss. Finally, a prototype is fabricated and measured. The good agreement between the simulated and measured results verifies the effectiveness of the presented design method.

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Low-frequency magnetic microwave absorber using reactive ground for extended bandwidth

Wan

et al. 2023

Journal of Applied Physics

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A Wideband DNG Metamaterial Absorber with WS-Shaped Split Ring Resonator for X- and Ku- Frequency Band Applications

Amugothu,

Damera

2023

IETE Technical Review

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Miniaturized reconfigurable three dimensional printed frequency selective surface based microwave absorbers

Chaitanya,

Peshwe,

Ghosh

et al. 2024

Electromagnetics

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A 2.5-D miniaturized metamaterial absorber with minimal frequency deviation at large incident angles for both TE and TM modes at low frequency

Cited by 4 publications

References 27 publications

Low-frequency magnetic microwave absorber using reactive ground for extended bandwidth

Low-frequency magnetic microwave absorber using reactive ground for extended bandwidth

A Wideband DNG Metamaterial Absorber with WS-Shaped Split Ring Resonator for X- and Ku- Frequency Band Applications

Miniaturized reconfigurable three dimensional printed frequency selective surface based microwave absorbers

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