Broadband amplitude modulation millimeter wave reflection system based on waveguide modulation technology

A technology of reflection system and modulation technology, applied in the modulation of electromagnetic waves, modulation, modulation and transformation of diodes, etc., can solve the problems of small modulation degree, etc., and achieve the effect of high modulation degree and low cost

Inactive Publication Date: 2014-01-22
SOUTHWESTERN INST OF PHYSICS
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the modulation frequency of most broadband millimeter-wave microwave frequency sources at home and abroad is about 1MHz in the FM and AM working modes, and some microwave sources that can reach 10MH...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Broadband amplitude modulation millimeter wave reflection system based on waveguide modulation technology
  • Broadband amplitude modulation millimeter wave reflection system based on waveguide modulation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, taking the amplitude-modulated microwave reflection diagnosis on the HL-2A tokamak as an example.

[0023] Such as figure 1 As shown, the waveguide modulator of the present invention adopts the same type of microwave mixing diode arrays (such as three) arranged side by side on the E plane of the waveguide to realize low loss, ultra-high frequency microwave amplitude or frequency modulation.

[0024] Such as figure 2 As shown, the broadband AM millimeter wave reflection system based on the waveguide modulator of the present invention includes a microwave source 1, a waveguide modulator 2, a microwave amplifier 3, a microwave detector 4, a frequency selective amplifier 5, a downconverter A6, a bandpass Filter A7, video detector 8, phase detector 9, quartz crystal oscillator A10, quartz crystal oscillator B11, power amplifier 12, horn antenna 14...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Poweraaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of nuclear fusion plasma microwave diagnosis and in particular relates to a broadband low-loss high-frequency microwave modulator based on a rectangular waveguide and a broadband amplitude modulation millimeter wave reflection system based on the waveguide modulator. A quartz crystal oscillator B is connected with a power amplifier; the power amplifier is connected with an intermediate frequency input end of the waveguide modulator; a microwave source is connected with a microwave input end of the waveguide modulator; the waveguide modulator is connected with a microwave amplifier; the microwave amplifier is connected with a horn antenna; a microwave detector is connected with a frequency-selecting amplifier; the frequency-selecting amplifier is connected with a down converter A; the quartz crystal oscillator B is also connected with a down converter B; a quartz crystal oscillator A is respectively connected with the down converter A and the down converter B; the down converter A is connected with a band-pass filter A; the band-pass filter A is connected with a phase discriminator; the down converter B is connected with a band-pass filter B; the band-pass filter B is connected with the phase discriminator. According to the system, low-loss ultrahigh-frequency microwave amplitude modulation can be realized.

Description

technical field [0001] The invention belongs to the technical field of nuclear fusion plasma microwave diagnosis, and in particular relates to a rectangular waveguide-based broadband, low-loss, high-frequency microwave modulator and a broadband amplitude modulation millimeter wave reflection system based on the waveguide modulator. Background technique [0002] Plasma electron density and temperature are the most critical physical parameters for plasma magnetic fluid instability, electron heat transport, particle transport, turbulence, high confinement mode operation, and plasma profile control and operation in controlled nuclear fusion experiments. one. Microwave diagnosis can go deep into the plasma to measure electron density and electron temperature distribution and disturbance with high spatio-temporal resolution. It is one of the advanced diagnostic technologies that are currently being developed preferentially in several major fusion devices in the world. In order to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03C7/02H03D7/04H03D9/06H03L7/26
Inventor 石中兵刘泽田丁玄同
Owner SOUTHWESTERN INST OF PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap