Study On Band-stop Filter Based On Surface Plasma Polaritons

The rapid development of communication systems makes the overall complexity of the system continue to increase,and internal capacity of the system can no longer meet the needs of development,so the miniaturization of communication devices has gradually become one of the development trends.Spoof surface plasmon polaritons technology studied in this paper is in line with the current development trend of communication systems.Due to its interdisciplinary background,it has solutions for system complexity,device miniaturization,and signal integrity.Certain advantages,it is precisely because of the significant advantages of SSPPs technology that SSPPs,a technology that has not been born for a long time,has quickly become one of the current research hotspots in communication systems.Starting from the theoretical research of SSPPs,this paper verifies and extends related theories through simulation calculations.Through the work of the paper,it can be seen that SSPPs are very flexible in the regulation of electromagnetic waves and have low signal loss.Based on the above points,this paper is in the following Related research has been carried out in several aspects:1.Spoof surface plasmon polaritons evolved from electromagnetic metamaterials.In this paper,the concept of electromagnetic metamaterials is used as an entry point to introduce the concept of artificial surface plasmons.Firstly,it is introduced theoretically that the periodic structure satisfies Floquet's theorem,and then it is verified in CST MICROWAVE STUDIO that the cell structure can support the surface plasmon mode.At the same time,the principle of the influence of the groove depth on the dispersion characteristic curve of the cell structure is clarified.The design of the transmission line laid the foundation.2.The U-shaped unit structure is used to form a U-shaped transmission line that supports the surface plasmon mode.A reasonable design ensures that the signal can smoothly and completely pass through the designed transmission line.Then extended on this basis and designed the H-shaped transmission line structure to make the signal integrity higher.Through the dispersion analysis of the unit H-shaped structure and the simulation calculation of the overall transmission line,the H-shaped unit structure and the transmission line were verified.Reasonable and correct.Simultaneously,it can be proved by simulation that H-shaped transmission lines are more restrictive to signals than Ushaped transmission lines.3.The resonant ring can be used to resonate in the process of electromagnetic wave transmission.Resonant rings of different sizes and shapes have unique responses to electromagnetic waves of different frequencies.Using this feature,a rectangular open resonant ring,an internally folded open resonant ring and an H-shaped Combining transmission lines,a single band stop filter and a multiple band stop filter are designed.4.The resonant ring can be used to resonate in the process of electromagnetic wave transmission.Resonant rings of different sizes and shapes have unique responses to electromagnetic waves of different frequencies.Using this feature,a rectangular open resonant ring,an internally folded open resonant ring and an H-shaped Combining transmission lines,a single band stop filter and a multiple band stop filter are designed.