Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Voltage-controlled oscillator oriented to distribution network state monitoring and noise reduction and quality improvement method thereof

A technology of voltage-controlled oscillators and voltage-controlled oscillations, applied in power oscillators, components of electrical measuring instruments, instruments, etc., can solve problems such as high power consumption of detection circuits, high phase noise, and low circuit quality factors, and achieve Effects of improved quality factor, high oscillation frequency, enhanced stability

Inactive Publication Date: 2019-07-30
QINZHOU POWER SUPPLY BUREAU OF GUANGXI POWER GRID CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of technology is still immature, and the ratio of input to output is not ideal
[0003] At present, with the development of network, communication and information technology, the status monitoring of the power grid is developing towards globalization and systematization, and more new sensor technology and intelligent information processing technology will be applied in the power system. However, the operation status of the distribution network is online There are still many problems in detection, such as low quality factor of the circuit, high phase noise, and high power consumption of the detection circuit. The above technical issues

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
  • Voltage-controlled oscillator oriented to distribution network state monitoring and noise reduction and quality improvement method thereof
  • Voltage-controlled oscillator oriented to distribution network state monitoring and noise reduction and quality improvement method thereof
  • Voltage-controlled oscillator oriented to distribution network state monitoring and noise reduction and quality improvement method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Please refer to figure 1 , a typical CMOS cross-coupled voltage-controlled oscillator whose oscillation frequency is determined by the inductor L and the varactor diode C var determined by the transistor M 1 and M 2 The negative resistance generated by the composed cross-coupled active circuit is used to compensate the loss of the LC resonant tank.

[0063] Please refer to figure 2 , shows the cross-coupled voltage-controlled oscillator after adding a capacitor without feedback function. Although this structure improves the phase noise of the circuit, the power consumption is relatively large.

[0064] Please refer to image 3 , is a cross-coupled structure voltage-controlled oscillator based on capacitive feedback technology proposed by the present invention. A capacitor is introduced between the two differential output ports. The capacitor has a feedback effect and can further reduce the phase noise of the circuit; at the same time, By employing transistor M 3...

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

No PUM Login to View More

Abstract

The invention relates to a voltage-controlled oscillator oriented to distribution network state monitoring and a noise reduction and quality improvement method thereof, and belongs to the field of distribution network operation state monitoring. The voltage-controlled oscillator is based on a novel 5.17 GHz CMOS. By adopting a capacitance feedback technology for improving the circuit quality factor, the parasitic effect of the circuit can be reduced in a high frequency band on the premise of not needing an additional substrate bias voltage, the phase noise of the circuit is improved. Meanwhile, the power consumption of the circuit is reduced by adopting a self-substrate bias technology without the substrate bias voltage. The capacitance feedback technology is adopted to improve the qualityfactor of the circuit, thereby reducing the phase noise. The working voltage of the circuit is reduced by adopting a self-substrate bias technology, so that the power consumption of the circuit is reduced.

Description

technical field [0001] The invention belongs to the technical field of distribution network state operation monitoring, in particular to a voltage-controlled oscillator oriented to distribution network state monitoring and a method for reducing noise and increasing product voltage. Background technique [0002] Developed countries have started research on online monitoring technology of power distribution system very early, but due to technical limitations in the early stage, coupled with the harsh operating environment of the power grid and many variable factors, the results of system status monitoring and the actual status of the power distribution system Due to incomplete correspondence and other reasons, the development of monitoring technology is slow and its application is limited. With the development of basic technology and theory, power system condition monitoring and early warning technology has gradually developed. However, the application of technology is still ...

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): H03B7/06G01R31/08G01R1/30
CPCG01R1/30G01R31/086H03B7/06
Inventor 邹宇池小兵谢振俊陈恒龙
Owner QINZHOU POWER SUPPLY BUREAU OF GUANGXI POWER GRID CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com