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Terahertz transmitting antenna and terahertz spectrum detection device

A transmitting antenna and spectral detection technology, applied in the field of terahertz spectroscopy, can solve the problems of low power and narrow frequency band of terahertz source

Active Publication Date: 2019-12-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a terahertz transmitting antenna and a terahertz spectrum detection device for the problems of narrow frequency band and low power of traditional terahertz sources

Method used

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  • Terahertz transmitting antenna and terahertz spectrum detection device
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  • Terahertz transmitting antenna and terahertz spectrum detection device

Examples

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preparation example Construction

[0069] The preparation process of the terahertz transmitting antenna 10 may follow the following steps. A silicon dioxide dielectric layer is provided as the substrate 200 . A copper strip is deposited on the lower surface of the substrate 200 to form the microstrip feeder 100 . A copper film is deposited on the upper surface of the substrate 200 . Four slits are etched on the upper copper film, and the structure and size of each slit are designed according to the transmission frequency band of the terahertz transmitting antenna 10 . Graphene of the same size is transferred into the slit by CVD, and the entire copper film is used as the conductive plate 300, and grounded. Graphene is deposited in the four slits as the antenna switch 310 . High resistance silicon is grown on the copper film as the insulating layer 400 . A polysilicon electrode is formed above the graphene in each slit as the conductive electrode 410 . Different voltages are applied to both ends of the cond...

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Abstract

The present application relates to a terahertz transmitting antenna, including: a microstrip feeder, a substrate, at least two antenna switches, at least one conductive plate, an insulating layer and at least two antenna patches. The terahertz transmitting antenna is provided with at least two antenna switches and corresponding at least two antenna patches, which fully increases the transmitting bandwidth of the terahertz transmitting antenna and increases the corresponding transmitting power. The terahertz transmitting antenna with high transmitting frequency bandwidth and high transmitting power can be applied to a small terahertz spectrum detection device to assist the transmitting source to transmit signals in the terahertz frequency band. The terahertz transmitting antenna splices multiple terahertz sources of different transmitting frequency bands through a multi-frequency transmitting antenna array to realize broadband spectral detection. The terahertz transmitting antenna adopts multi-frequency transmitting switching technology, which can reduce the operation time of the fingerprint identification algorithm and realize the rapid identification of specific target substances.

Description

technical field [0001] The present application relates to the field of terahertz spectrum application technology, in particular to a terahertz transmitting antenna and a terahertz spectrum detection device. Background technique [0002] In the case of hazardous chemical accidents, in order to quickly respond to emergencies and implement emergency safety measures quickly and effectively, it is first necessary to quickly grasp the information on the composition, content and distribution range of hazardous chemicals. The vibration frequency or rotation frequency of organic molecules contained in common dangerous chemicals is in the terahertz band (0.1THz-10THz), which shows strong fingerprint characteristics in this band. Therefore, terahertz spectroscopy has important practical significance for the detection of dangerous chemicals in the atmosphere. [0003] However, for a terahertz spectral detection system to realize the identification of multiple material components, the b...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q21/00H01Q21/30H01Q1/22G01N21/25G01N21/3581
CPCH01Q1/225H01Q1/38H01Q1/50H01Q1/521H01Q21/0006H01Q21/30G01N21/255G01N21/3581H01Q3/24H01Q19/17H01Q9/0442H01Q5/22H01Q21/0075H01Q21/065
Inventor 郑小平韩侠辉耿华白胜闯邓晓娇
Owner TSINGHUA UNIV
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