Design of Spoof Surface Plasmon Polaritons Low Pass Notch Filter Based on Novel bow-tie cell Structure
-
摘要: 为降低滤波器的插入损耗以及实现滤波器的小型化，该文提出一种新型具有陷波功能的人工表面等离子体激元(SSPPs)低通滤波器，该滤波器主要由新型蝶形单元结构、过渡结构以及用于实现陷波功能的叉指电容环路谐振器(IDCLLR)结构组成。新型蝶形单元结构是由一个椭圆形贴片向左右方向旋转30°构成，经过镂空处理后可以显著降低插入损耗，相比传统的矩形和椭圆形结构具有更好的色散特性，大大提高了滤波器的带内的平坦度和带外抑制能力。该文对矩形、椭圆形、梯形以及新型蝶形等不同单元结构的色散曲线进行了分析，并仿真分析了滤波器的S21和S11曲线，验证了新型蝶形单元结构在色散特性、插入损耗、低截止频率和带外抑制方面所具有的优势。最后，对该滤波器进行了加工和测试，测试结果表明，该滤波器仿真结果和测试结果吻合较好，表现出较好的带外抑制和带内平坦度，可以实现对特定干扰频段陷波抑制。滤波器尺寸为0.98λ0×0.17λ0。该人工表面等离子体激元滤波器从设计新型单元结构的角度出发，实现了良好性能的同时，实现了滤波器的小型化。
-
关键词:
- 低通陷波滤波器 /
- 人工表面等离子体激元 /
- 色散特性
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. -
[1] STEWART M E, ANDERTON C R, THOMPSON L B, et al. Nanostructured plasmonic sensors[J]. Chemical Reviews, 2008, 108(2): 494–521. doi: 10.1021/cr068126n [2] ZHAO Lei, ZHANG Xin, WANG Jun, et al. A novel broadband band-pass filter based on spoof surface plasmon polaritons[J]. Scientific Reports, 2016, 6(1): 36069. doi: 10.1038/srep36069 [3] GRAMOTNEV D K and BOZHEVOLNYI S I. Plasmonics beyond the diffraction limit[J]. Nature Photonics, 2010, 4(2): 83–91. doi: 10.1038/nphoton.2009.282 [4] FANG N, LEE H, SUN Cheng, et al. Sub-diffraction-limited optical imaging with a silver superlens[J]. Science, 2005, 308(5721): 534–537. doi: 10.1126/science.1108759 [5] FENG Wenjie and CHE Wenquan. Wideband filtering power dividers using single- and double-layer periodic spoof surface plasmon polaritons[J]. International Journal of RF and Microwave Computer-Aided Engineering, 2019, 29(6): e21706. doi: 10.1002/mmce.21706 [6] GARCIA-VIDAL F J, MARTÍN-MORENO L, and PENDRY J B. Surfaces with holes in them: New plasmonic metamaterials[J]. Journal of Optics A:Pure and Applied Optics, 2005, 7(2): S97–S101. doi: 10.1088/1464-4258/7/2/013 [7] PENDRY J B, MARTÍN-MORENO L, and GARCIA-VIDAL F J. Mimicking surface plasmons with structured surfaces[J]. Science, 2004, 305(5685): 847–848. doi: 10.1126/science.1098999 [8] SHEN Xiaopeng, CUI Tiejun, MARTIN-CANO D, et al. Conformal surface plasmons propagating on ultrathin and flexible films[J]. Proceedings of the National Academy of Sciences of the United States of America, 2013, 110(1): 40–45. doi: 10.1073/pnas.1210417110 [9] 汤文轩, 张浩驰, 崔铁军. 人工表面等离激元及其在微波频段的应用[J]. 电子与信息学报, 2017, 39(1): 231–239. doi: 10.11999/JEIT160692TANG Wenxuan, ZHANG Haochi, and CUI Tiejun. Spoof surface plasmon polariton and its applications to microwave frequencies[J]. Journal of Electronics &Information Technology, 2017, 39(1): 231–239. doi: 10.11999/JEIT160692 [10] MA Huifeng, SHEN Xiaopeng, CHENG Qiang, et al. Broadband and high-efficiency conversion from guided waves to spoof surface plasmon polaritons[J]. Laser & Photonics Reviews, 2014, 8(1): 146–151. doi: 10.1002/lpor.201300118 [11] ZHANG Dawei, WU Qun, ZHANG Kuang, et al. Second-mode spoof surface plasmon polaritons based on complementary plasmonic metamaterials[C]. 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Boston, USA, 2018: 2327–2328. [12] ZHANG Dawei, ZHANG Kuang, WU Qun, et al. Broadband propagation of high-order mode of spoof surface plasmon polaritons supported by compact complementary structure[C]. 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall), Xiamen, China, 2019: 177–181. [13] 朱登玮, 曾瑞敏, 唐泽恬, 等. 基于人工表面等离子体激元的多频带滤波器设计[J]. 激光与光电子学进展, 2020, 57(17): 172401. doi: 10.3788/Lop57.172401ZHU Dengwei, ZENG Ruimin, TANG Zetian, et al. Design of multiband filter based on spoof surface plasmon polaritons[J]. Laser &Optoelectronics Progress, 2020, 57(17): 172401. doi: 10.3788/Lop57.172401 [14] PAN Leidan, WU Yongle, WANG Weimin, et al. A flexible high-selectivity single-layer coplanar waveguide bandpass filter using interdigital spoof surface plasmon polaritons of bow-tie cells[J]. IEEE Transactions on Plasma Science, 2020, 48(10): 3582–3588. doi: 10.1109/TPS.2020.3023441 [15] WANG Meng, SUN Shi, MA Huifeng, et al. Supercompact and ultrawideband surface plasmonic bandpass filter[J]. IEEE Transactions on Microwave Theory and Techniques, 2020, 68(2): 732–740. doi: 10.1109/TMTT.2019.2952123 [16] ZHANG Qian, ZHANG Haochi, YIN Jiayuan, et al. A series of compact rejection filters based on the interaction between spoof SPPs and CSRRs[J]. Scientific Reports, 2016, 6(1): 28256. doi: 10.1038/srep28256 [17] WANG Zhengxing, ZHANG Haochi, LU Jiayuan, et al. Compact filters with adjustable multi-band rejections based on spoof surface plasmon polaritons[J]. Journal of Physics D:Applied Physics, 2019, 52(2): 025107. doi: 10.1088/1361-6463/aae885 [18] WANG Lili, CUI Xueqi, YANG Hailong, et al. Miniaturized spoof surface plasmon polaritons low-pass filter with a novel transition structure[J]. IEEE Photonics Technology Letters, 2019, 31(15): 1273–1276. doi: 10.1109/LPT.2019.2925509 -
下载:
图(14) / 表(4)
计量
- 文章访问数: 1074
- HTML全文浏览量: 538
- PDF下载量: 71
- 被引次数: 0
下载:
