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Dispersion medium and method for suppressing distortion during signal transmission

A signal transmission and medium technology, applied in the field of signal transmission, can solve problems such as being in the optical frequency band, achieve broad application prospects, and achieve the effect of dispersion compensation

Active Publication Date: 2019-02-12
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the microwave field, limited by the fact that the anomalous dispersion band of the material is almost in the optical frequency band, the current group delay compensation method for signals is only digital compensation

Method used

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  • Dispersion medium and method for suppressing distortion during signal transmission
  • Dispersion medium and method for suppressing distortion during signal transmission
  • Dispersion medium and method for suppressing distortion during signal transmission

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with accompanying drawing.

[0042] In the coordinate system constructed by the present invention, the signal propagation direction is the z direction, and the normal direction outside the front surface of the resonant unit substrate is the y direction. Two periodic resonant units are arranged in the x direction, and two periodic resonant units are arranged in the y direction. Different numbers of periodic resonant units are arranged in different directions to obtain different degrees of normal dispersion and abnormal dispersion effects. The magnetic field direction of the electromagnetic wave is along the normal direction of the plane where the resonant unit is located ( figure 1 and 2 Shown in the x direction), the direction of the electric field is perpendicular to the opening direction of the split resonator ring in the resonant unit ( figure 1 and 2 Shown in the y direction), the propagation di...

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Abstract

The invention discloses a dispersive medium for suppressing distortion in a signal transmission process and a method thereof. The dispersive medium comprises a compensated dispersive medium which is mainly formed by a normal dispersive medium and an abnormal dispersive medium; the abnormal dispersive medium is connected to one side of the normal dispersive medium near a transmission exit along the transmission direction of electromagnetic waves; the normal dispersive medium is mainly composed of normal dispersion electromagnetic resonant units; the abnormal dispersive medium is mainly composed of abnormal dispersion electromagnetic resonant units; the normal dispersive medium is used to construct normal dispersion of signals; the abnormal dispersive medium is used to construct abnormal dispersion of the signals; and the negative group velocity (superluminal velocity) phenomenon of the abnormal dispersion is used to compensate the envelope distortion of the signals caused by passing through the normal dispersive medium. The dispersive medium for suppressing the distortion in the signal transmission process provided by the invention uses artificial dielectric materials to compensate the envelope distortion of the signals generated in medium propagation essentially in a microwave frequency band, has the characteristics of being high in precision and small in size, realizes signal dispersion compensation, and the application is wide.

Description

technical field [0001] The invention relates to the field of signal transmission, in particular to a dispersion medium and method for suppressing distortion during signal transmission. Background technique [0002] Distortion is inevitable during signal transmission. Whether it is in electronic circuits, radio frequency microwave circuits, optical fiber communications, or in space signal transmission, as long as the signal has bandwidth, it will be subject to varying degrees of distortion. Distortion is the main reason for inhibiting transmission distance, transmission accuracy, and transmission quality during signal transmission. Among the many types of distortion, the most common and also the most important is group delay distortion. In signal transmission, group delay refers to a phase response that exhibits a negative slope for a given frequency (in the field of electromagnetism, phase response is usually represented by the refractive index, which is determined by the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2513G02B27/01
CPCG02B27/0172H04B10/25133
Inventor 王春朱忠博叶德信
Owner ZHEJIANG UNIV
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