scholarly journals Dynamic Modulation Band Rejection Filter Based on Spoof Surface Plasmon Polaritons

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 993
Author(s):  
Weigao Yang ◽  
Lixiang Liu ◽  
Xiaoqiang Su ◽  
Lijuan Dong ◽  
Yanhong Liu ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Fundamental Mode ◽  
Propagation Mode ◽  
Dynamic Modulation ◽  
Time Modulation ◽  
Rejection Filter ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons ◽  
Rejection Band

In this paper, we proposed a dynamic modulation band rejection filter based on the spoof surface plasmon polaritons (SSPPs) waveguide. The dynamic adjusting mainly derives from changing the capacitance between the U-shape and the waveguide configuration. The capacitance can modulate the cut-off frequency of fundamental mode. The rejection band is formed by the high order propagation mode and the cut-off frequency of fundamental mode. We analyzed the dispersion curve and transmission performance of the band rejection filter with different capacitances. Compared with the previous scheme, the design we proposed here has a simpler and more delicate configuration to process and decreases the mechanical error. We experimentally demonstrated the excellent performance of the device by changing the direct voltage loaded on the varactor diode and achieved real time modulation around 2 GHz.

Multi-band rejection filters based on spoof surface plasmon polaritons and folded split-ring resonators

2019 ◽  
Vol 11 (08) ◽  
pp. 774-781 ◽  
Author(s):  
Luping Li ◽  
Lijuan Dong ◽  
Peng Chen ◽  
Kai Yang
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Cutoff Frequency ◽  
Ring Resonators ◽  
Center Frequency ◽  
Pass Band ◽  
Rejection Filter ◽  
Low Pass ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

AbstractA dualband rejection filter and a triband rejection filter are proposed in this letter, both of which are implemented by cascading spoof surface plasmon polaritons (SSPPs) of the same structure but with diverse rejection bands. Compared with traditional ones, the proposed filters provide more compact structures, wider rejection bands, and better independent tunability. In the proposed filters, the rejection bandwidth, the center frequency of the rejection band and the filter's cutoff frequency can be adjusted independently. And the different rejection bands in the same filter also can be independently controlled. Agreements between the dispersion of SSPP units and the S21 of filters are also presented. Measurement results demonstrate that both filters load multiple rejection bands on the 27.7 GHz wide low-pass band and all the rejection bands locate in Ku and K bands. The average rejection bandwidth and the average rejection depth of the two filters are 1.49 GHz and 42.1 dB, respectively.

A Compact Wideband Filter Based on Spoof Surface Plasmon Polaritons With a Wide Upper Rejection Band

2020 ◽  
Vol 32 (24) ◽  
pp. 1511-1514
Author(s):  
Dawei Zhang ◽  
Kuang Zhang ◽  
Qun Wu ◽  
Tao Jiang
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons ◽  
Rejection Band

scholarly journals An ultra-compact rejection filter based on spoof surface plasmon polaritons

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Shumin Zhao ◽  
Hao Chi Zhang ◽  
Jiahao Zhao ◽  
Wen Xuan Tang
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Rejection Filter ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

scholarly journals A Spoof Surface Plasmon Polaritons (SSPPs) Based Dual-Band-Rejection Filter with Wide Rejection Bandwidth

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7311
Author(s):  
Ehsan Farokhipour ◽  
Mohammad Mehrabi ◽  
Nader Komjani ◽  
Can Ding
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Mode Conversion ◽  
Ring Resonators ◽  
Dual Band ◽  
Total Size ◽  
Filter Performance ◽  
Rejection Filter ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

This paper presents a novel single-layer dual band-rejection-filter based on Spoof Surface Plasmon Polaritons (SSPPs). The filter consists of an SSPP-based transmission line, as well as six coupled circular ring resonators (CCRRs) etched among ground planes of the center corrugated strip. These resonators are excited by electric-field of the SSPP structure. The added ground on both sides of the strip yields tighter electromagnetic fields and improves the filter performance at lower frequencies. By removing flaring ground in comparison to prevalent SSPP-based constructions, the total size of the filter is significantly decreased, and mode conversion efficiency at the transition from co-planar waveguide (CPW) to the SSPP line is increased. The proposed filter possesses tunable rejection bandwidth, wide stop bands, and a variety of different parameters to adjust the forbidden bands and the filter’s cut-off frequency. To demonstrate the filter tunability, the effect of different elements like number (n), width (WR), radius (RR) of CCRRs, and their distance to the SSPP line (yR) are surveyed. Two forbidden bands, located in the X and K bands, are 8.6–11.2 GHz and 20–21.8 GHz. As the proof-of-concept, the proposed filter was fabricated, and a good agreement between the simulation and experiment results was achieved.

scholarly journals Tilted-Beam Antenna Based on SSPPs-TL with Stable Gain

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3288
Author(s):  
Dujuan Wei ◽  
Youlin Geng ◽  
Pengquan Zhang ◽  
Zhonghai Zhang ◽  
Chuan Yin
Keyword(s):  
Surface Plasmon ◽  
Slow Wave ◽  
Surface Plasmon Polaritons ◽  
Transmission Lines ◽  
Design Theory ◽  
Metal Plate ◽  
Wave Radiation ◽  
Gain Bandwidth ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

In this paper, a titled-beam antenna based on spoof surface plasmon polaritons (SSPPs) transmission lines (TLs) is proposed. The parallel SSPPs-TL is a slow-wave TL, which is able to limit waves in the TL strictly. By periodically introducing a set of tapered stubs along the SSPPs-TL, the backward endfire beams are formed by the surface waves in the slow-wave radiation region. Then, through the placement of a big metal plate below the endfire antenna, the backward endfire beams are tilted, and the tilted angle of the beams are steered by the distance of the metal plate and antenna. Over the band of 5.7 GHz~7.0 GHz, the tilted antenna performs constant shapes of radiation patterns. The gain keeps stable at around 12 dBi and the 1-dB gain bandwidth is 20%. The measured results of the fabricated prototypes confirm the design theory and simulated results.

Wideband Small Aperture Endfire Antenna Based on Spoof Surface Plasmon Polaritons

2021 ◽  
pp. 1-1
Author(s):  
Yangbin Jiang ◽  
Leilei Liu ◽  
Yangjun Hu ◽  
Dingwei Jiang
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Small Aperture ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons
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