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An electrically adjustable three-band Fano resonant structure and a method for realizing spectral lines

A resonant structure, three-band technology, applied in the direction of resonators, circuits, electrical components, etc., can solve the problems of single operating frequency and complex structure, and achieve the effect of simple device structure, simple processing and controllable cost

Active Publication Date: 2022-02-18
RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN +1
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Problems solved by technology

Solve the problems of complex structure and single operating frequency of traditional devices

Method used

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  • An electrically adjustable three-band Fano resonant structure and a method for realizing spectral lines
  • An electrically adjustable three-band Fano resonant structure and a method for realizing spectral lines
  • An electrically adjustable three-band Fano resonant structure and a method for realizing spectral lines

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Embodiment Construction

[0022] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0023] The present invention uses four metal split resonant rings to realize the method of three-band Fano resonance, and integrates four varactor diodes into the structural design, and dynamically regulates the working frequency of the three-band Fano resonance by applying a reverse bias voltage . The emergence of the three-band Fano resonance is due to the constructive or destructive interference of the local field modes of multiple split-ring resonators in a certain frequency range, which leads to a continuous drastic change of the transmission spectral lines. The working state of the varactor diode (model: BBY52-02W, Infineon) can be adjusted by applying reverse bias voltage. When the voltage changes from 0V (volt) to 8V, its capacitance value can be between 2.63pF (picofarad) and 0.76pF. between dynamic adjustment [see literature 2, Q.Fu, F.Zhang, Y.Fan, X....

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Abstract

The invention relates to an electrically adjustable three-band Fano resonance structure and a method for realizing spectral lines. Four varactor diodes are integrated into the structural design, and the three-band Fano resonance is dynamically regulated by applying a reverse bias voltage. working frequency. The emergence of the three-band Fano resonance is due to the constructive or destructive interference of the local field modes of multiple split-ring resonators in a certain frequency range, which leads to a continuous drastic change of the transmission spectral lines. The varactor diode can be regulated by applying a reverse bias voltage. By changing the operating frequency of each split resonant ring in this way, the dynamic modulation of the three-band Fano resonant spectral lines is realized. The device involved in the invention is simple in structure, easy to process and experiment, and can also make the device work in different electromagnetic wave frequency bands by controlling the geometric size of the metal structure.

Description

technical field [0001] The invention belongs to a three-band Fano resonant structure and a method for realizing spectral lines, and relates to an electrically adjustable three-band Fano resonant structure and a method for realizing spectral lines. Four metal split resonant rings are used to realize the three-band Fano resonance transmission spectrum In this paper, four varactor diodes are combined to achieve dynamic electrical regulation of the three-band Fano resonance. Background technique [0002] The Fano resonance originates from the coupling of the discrete state and the continuous state. The scattering spectrum of this resonance is often extremely sharp, and it can change from complete transmission to complete reflection in a narrow frequency range, so its scattering spectrum often has a higher quality factor. With the help of the design idea of ​​metamaterials, researchers can also achieve sharp Fano resonance lines by optimizing the design of exquisite subwavelengt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/00
CPCH01P7/00
Inventor 付全红杨蕤生樊元成张富利
Owner RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN
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