Design of Spoof Surface Plasmon Polaritons Low Pass Notch Filter Based on Novel bow-tie cell Structure

LI Xuping; ZHANG Jiaxiang; YANG Hailong; XI Xiaoli

doi:10.11999/JEIT211108

Volume 44 Issue 4

Apr. 2022

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LI Xuping, ZHANG Jiaxiang, YANG Hailong, XI Xiaoli. Design of Spoof Surface Plasmon Polaritons Low Pass Notch Filter Based on Novel bow-tie cell Structure[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1327-1335. doi: 10.11999/JEIT211108

Citation:

LI Xuping, ZHANG Jiaxiang, YANG Hailong, XI Xiaoli. Design of Spoof Surface Plasmon Polaritons Low Pass Notch Filter Based on Novel bow-tie cell Structure[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1327-1335. doi: 10.11999/JEIT211108

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Design of Spoof Surface Plasmon Polaritons Low Pass Notch Filter Based on Novel bow-tie cell Structure

doi: 10.11999/JEIT211108

1.
Institute of Electronic Engineering, Xi’an University of Posts & Telecommunications, Xi’an 710121, China
2.
Xi’an University of Technologys, Xi’an 710048, China

Funds: The Natural Science Basic Research Program of Shaanxi (2021JQ-710, 2021GY-049, 2020GY-065), Xi’an Science and Technology Plan Project (2021JH-06-0038), The State Administration of Science, Technology and Industry for National Defence Public Project (HTK2020KL504016)

Received Date: 2021-10-11
Accepted Date: 2022-03-10
Rev Recd Date: 2022-02-26

Available Online: 2022-03-14

Publish Date: 2022-04-18

Abstract

Abstract

To reduce the insertion loss of the filter and achieve filter miniaturization, a novel Spoof Surface Plasmon Polaritons (SSPPs) excitonic low-pass filter with a notched band is proposed, which consists mainly of novel bow-tie cells structure, transition structures, and InterDigital Capacitance Loaded Loop Resonators (IDCLLR) structures used for accomplishing the notch function. The novel bow-tie cell structure is composed of an elliptical patch rotated 30° to the left and right directions, which can significantly reduce insertion loss after hollowing out. Compared with the traditional rectangular and elliptical structure, novel bow-tie structure has better dispersion characteristics, which improves greatly the filter's in-band flatness and out-of-band rejection capability. In addition, the dispersion curves of different cell structures such as rectangles, ellipses, trapezoids and novel bow-tie are analyzed, and the S₂₁ and S₁₁ curves of filters are simulated. The results show that the novel bow-tie unit structure has advantages in dispersion characteristics, insertion loss, low cut-off frequency and out-of-band suppression. Finally, the filter is processed and tested, and the test results show that the filter simulation results and test results match well, have good out-of-band rejection and in-band flatness, which can achieve notch suppression for specific interference bands. The size of the filter is 0.98λ₀×0.17λ₀. From the point of view of a new element structure is designed, this SSPPs filter achieves good performance and miniaturization.
- Low pass notch filter,
- Spoof Surface Plasmon Polaritons(SSPPs),
- Dispersion characteristics

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References(18)

References

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