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A fast terahertz wave modulator with hemt nested structure loaded by fin wire

A nested structure and modulator technology, applied in waveguide devices, instruments, nonlinear optics, etc., can solve the problems of large coupling parasitic effects between metal units, reduce the response rate of modulators, and inconvenient integration of modulators, etc., to achieve circuit The effect of small time constant, low insertion loss and high modulation

Active Publication Date: 2019-06-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above method, the modulator mostly adopts the form of spatial metal array, and the coupling parasitic effect between the metal units is large, which reduces the response rate of the modulator, and the modulator is inconvenient to integrate

Method used

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  • A fast terahertz wave modulator with hemt nested structure loaded by fin wire
  • A fast terahertz wave modulator with hemt nested structure loaded by fin wire
  • A fast terahertz wave modulator with hemt nested structure loaded by fin wire

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0031] This specific embodiment provides a terahertz wave fast modulator with a nested HEMT structure loaded with fin lines, and its structural schematic diagram is as follows figure 1 and figure 2 As shown, it includes input waveguide 1, waveguide-fin line transition part 2, fin line modulation part 3, fin line-waveguide transition part 4, output waveguide 5 and external filter feed structure 6;

[0032] The input waveguide 1 is composed of a standard straight waveguide for feeding terahertz electromagnetic waves;

[0033] The waveguide-fin line transition part 2 is composed of a part of a single-section printed ladder transformer, which is used to realize the conversion from the waveguide to the fin line, and couple the terahertz electromagnetic wave input in the waveguide 1 to the fin line;

[0034] The fin line modulation part 3 includes a fin line ...

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Abstract

The invention provides a fast terahertz wave modulator with a HEMT nested structure loaded with fin wires, and belongs to the technical field of electromagnetic functional devices. The invention is realized by combining the terahertz band fin-waveguide transmission system with the artificial electromagnetic resonance structure unit and the high electron mobility transistor HEMT. The invention realizes the control of the electromagnetic resonance mode in the artificial electromagnetic resonance unit structure by electronically controlling the electromagnetic characteristics of the HEMT, thereby realizing the modulation of the amplitude and phase of the terahertz wave propagating in the fin wire-waveguide. The invention can realize a modulation depth of more than 95%, and at the same time, the insertion loss of the terahertz wave can be less than -1.5dB. The invention can be realized by using micro-processing technology, and the preparation technology is mature and reliable. The invention realizes the modulation device combining the semiconductor material, the artificial microstructure array and the terahertz transmission line, and has important practical application value in the fields of terahertz wireless communication, terahertz spectrum technology, terahertz security imaging and the like.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic functional devices, focuses on fast dynamic functional devices in the terahertz band, and is used for terahertz wave modulators, terahertz wave switches, terahertz phase shifters, etc., and specifically relates to a fin line loaded HEMT nesting Structured terahertz wave fast modulators. Background technique [0002] In recent years, the unique properties of terahertz have provided attractive development possibilities for many fields such as communication, radar, electronic countermeasures and medical imaging. Among them, in the terahertz communication and imaging system, the terahertz wave dynamic functional device-terahertz external modulator has now become its key core technology. Since 2004, top international natural science journals such as Nature / Science have published many articles on terahertz wave external modulators, including doped silicon-based, gallium arsenide-based, phase-ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/00H01P1/00
CPCG02F1/0081G02F2203/13H01P1/00
Inventor 张雅鑫张亭孙翰梁士雄杨梓强
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA