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A novel graphene-based isolator

A technology of isolator and graphene, which is applied in the direction of waveguide devices, electrical components, circuits, etc., can solve the problems of low power capacity, complex structure, narrow working frequency band of isolators, etc., and achieve the effect of compact structure and large power capacity

Inactive Publication Date: 2017-03-22
CHINA JILIANG UNIV
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  • Application Information

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Problems solved by technology

Commonly used isolators include Faraday rotating isolators, field-shifting isolators, resonant isolators, and edge-guided film isolators. Among them, Faraday rotating isolators are most commonly used in waveguide systems, which use electromagnetic waves to magnetize in the longitudinal direction. The isolator made by the rotation of the polarization surface when propagating in the ferrite rod, but the working frequency band of the isolator is narrow, the structure is more complicated, and the power capacity is low

Method used

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  • A novel graphene-based isolator
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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elucidated below in conjunction with specific embodiments.

[0021] A new type of graphene-based isolator applied in the field of 3G communication, the isolator is composed of two wire grid polarizers 21, 22 and three groups of free-standing single-layer graphene 3, wherein the wire grid polarizer 2 is composed of etc. Metal pillars 4 at intervals are arranged in parallel, two wire grid polarizers are placed at an angle of 45°, the single-layer graphene 3 is placed parallel to the wire-grid polarizer 2, and the bias magnetic field passes through the single-layer graphene 3 vertically.

[0022] The present invention adopts following method to realize signal isolation:

[0023] When the radius of the metal pillars 4 and the spacing between the metal pillars 4 are much smaller than the incident wavelength, th...

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Abstract

The invention relates to a graphene-based novel isolator. The isolator is composed of wire grid polarizers (21) and (22) and three groups of single-layer graphenes (3) standing freely. A wire grid polarizer (2) is formed by parallel arrangement of metal columns (8) at equal intervals; the single-layer graphenes (3) are arranged to be parallel to the wire grid polarizers (21) and (22); a bias magnetic field vertically passes through the single-layer graphenes (3); and TE waves input by a signal input / output port (1) can pass through the isolator, and TE waves input by a signal input / output port (5) cannot pass through the isolator. Within a working frequency range, the isolator has good isolation performance and also has the advantages of large power capacity, compact structure, rapid heat dissipation and the like.

Description

technical field [0001] The invention relates to a novel graphene-based isolator applied in the field of 3G communication, in particular to the application of graphene materials. Background technique [0002] The main function of the isolator is to isolate the input, output and working power from each other. It is widely used in mobile communication and measurement systems. In the base station and mobile station system, the isolator is used to realize the sharing of the receiver and transmitter antenna (duplexer or multiplexer); in the transmitting and receiving system, the isolator is used to isolate the input and output of the switching amplifier and the power amplifier Signal; In the measurement system, the isolator is used to remove the mutual interference of the signal between the instrument and the equipment. Commonly used isolators include Faraday rotating isolators, field-shifting isolators, resonant isolators, and edge-guided film isolators. Among them, Faraday rota...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/375
Inventor 肖丙刚谢治毅孙润亮章东平
Owner CHINA JILIANG UNIV
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