Notched-wideband Bandpass Filter Based on Spoof Surface Plasmon Polaritons Loaded with Resonator Structure

Sun, Shu-Peng; Cheng, Yong-Zhi; Luo, Hui; Chen, Fu; Li, Xiangcheng

doi:10.1007/s11468-022-01755-z

Cited by 18 publications

(4 citation statements)

References 39 publications

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“…Electromagnetic waves with frequencies ranging from 0.1 to 10 THz are referred to as terahertz waves, which are electromagnetic waves with wavelengths between millimeter waves and infrared light, also known as submillimeter waves (Zhu et al, 2020;Saraereh, 2021;Luo et al, 2022). Because the frequency of the submillimeter wave band is more than 103 times higher than that of the millimeter wave band (the band used for 5G communication), the resources are abundant and the system capacity is large, so 6G technology selects the frequency in this band to achieve faster communication (Alibakhshike et al, 2021;Alibakhshikenari et al, 2022a;Sun et al, 2023). It can be seen that terahertz technology will provide crucial technical support for the development of a new OPEN ACCESS EDITED BY Lei Zhang, Xi'an Jiaotong University, China generation of communication technology (Alibakhshikenari et al, 2021a;Althuwayb et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Design and performance evaluation of a novel metamaterial broadband THz filter for 6G applications

Althuwayb,

Rashid,

Elhamrawy

et al. 2023

Front. Mater.

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Terahertz (THz) radiation, which has applications in the imaging of objects, non-destructive testing, satellite communication, medical diagnostics, and biosensing, has generated a great deal of attention due to its remarkable properties. This paper proposes a novel broadband filter for THz applications. The main idea is to overcome the insertion loss and bandwidth issues by modeling a frequency-domain finite difference method and guided-mode resonance (GMR). The optimal design scheme of the wideband pass filter based on the circular resonant ring is discussed by comparing the transmission parameters under various parameters. This scheme overcomes the restriction of the narrow passband bandwidth of the prior THz filters and achieves approximately 3 dB bandwidth of 0.54 THz. The proposed THz filter paper also has the advantages of a straightforward structure, low processing costs, and ease of conformal with other structures, and it can be used for stealth fighters, new communication technology, and precise instruments. In addition, when compared to existing models, the suggested filter offers higher 3 dB BW operation, increased transmittance, low insertion loss, and stable performance at various oblique angles.

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Section: Introductionmentioning

confidence: 99%

Design and performance evaluation of a novel metamaterial broadband THz filter for 6G applications

Althuwayb,

Rashid,

Elhamrawy

et al. 2023

Front. Mater.

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“…To analyze the properties, it is necessary to abstract the equivalent model of the LGSSPPs unit cell. 11,12 As depicted in Figure 1B, the model can be obtained by transmission line method instead of an equivalent RLC network, which produces a higher accuracy benefit from the adjacent ground plane. The parameters Z 1 , Z 2 , Z 3 , θ 1 , θ 2 , θ 3 can be calculated by the below equation:…”

Section: The Analysis Of the Lgsspps Unit Cellmentioning

confidence: 99%

Design of low‐pass filter with improved equalization based on lossy grounded spoof surface plasmon polaritons

Wang,

Shi

2024

Micro & Optical Tech Letters

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A new method for designing multifunctional low‐pass filter with controllable equalizing capability is presented in this letter. By constructing the novel unit cell, namely, loading surface mount resistor on the grounded spoof surface plasmon polaritons (SSPPs), the filter not only achieves filtering and equalizing functions at the same time, but also improves the equalizing response in the low‐band effectively. To illustrate the principle, the extraction method of equivalent circuit of the lossy unit cell is introduced, and the equalization and filtering properties characterized by attenuation constant and asymptotic frequency are explored. To verify the concept, a prototype operating from 0.5 to 3.4 GHz with 10 dB equalizing value is implemented, fabricated, and measured. Good agreement is achieved between simulation and measurement. The result shows that the filter is provided with a smooth equalizing curve at the low frequency of the passband compared with the ungrounded SSPPs.

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“…Although the filter in [28] has a notch band and four transmission passbands, it has no size advantage over the structure in this paper. The filters in [29][30][31][32][33] have successfully realized 2-3 transmission passbands by adding defected ground or inserting the structure between the grooves of SSPPs transmission line grooves, or using muti-mode resonant SSPPs cell. The proposed filters in this paper can realize 2-4 transmission passbands with the advantage of miniaturization by using multiple high-order modes.…”

Section: Performance Comparisonmentioning

confidence: 99%

Compact Muti-Frequency Band-Pass Filters Based on High-Order Mode of Folded Line Spoof Surface Plasmon Polaritons Waveguide

Yang,

Liu,

et al. 2024

IEEE Access

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We proposed a folded line spoof surface plasmonic polaritons (SSPPs) waveguide that allows for efficient and strongly constrained microwave SSPPs transmission. The dispersion characteristics of SSPPs waveguides based on folded line unit is investigated. Compared to conventional rectangular-grooved SSPPs waveguide with the same cut-off frequency, the lateral dimension of the folded line SSPPs waveguide can be reduced to 56%. The results show that the folded line SSPPs waveguide has stronger field binding as well as better miniaturization advantages. In order to validate the proposed design, a dual-band band-pass filter is designed based on the high-order mode of the proposed unit and we then add an asymmetric structure to achieve a tri-band band-pass filter with good performance. In addition, a band-pass filter with wide stopband between two pass bands is designed by incorporating an interdigital finger in the folded line unit, whose width of the stopband can be increased by 50% compared to the filter without interdigital finger. By optimizing the length of interdigital finger, two notch bands are respectively obtained in two pass bands of a dual-band passband filter. At the same time, the stopband is also widened. Four proposed filters are fabricated and the measurement results are in good agreement with the simulated ones, verifying the feasibility of the structure. The proposed SSPPs structure can significantly enhance the flexibility and universality of the filter. Additionally, these filters offer compact structures, wide stopbands, and hold immense potential for application in integrated devices.INDEX TERMS Band-pass filter, folded line, notch band, spoof surface plasmonic polaritons (SSPPs).

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Notched-wideband Bandpass Filter Based on Spoof Surface Plasmon Polaritons Loaded with Resonator Structure

Cited by 18 publications

References 39 publications

Design and performance evaluation of a novel metamaterial broadband THz filter for 6G applications

Design and performance evaluation of a novel metamaterial broadband THz filter for 6G applications

Design of low‐pass filter with improved equalization based on lossy grounded spoof surface plasmon polaritons

Compact Muti-Frequency Band-Pass Filters Based on High-Order Mode of Folded Line Spoof Surface Plasmon Polaritons Waveguide

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