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

Voltage-controlled oscillator with feedback and circuit provided with the same

A voltage-controlled oscillator and circuit technology, applied in power oscillators, electrical components, etc., can solve problems such as increasing VCO DC power consumption, and achieve the effects of simple structure, fast response speed, and large output amplitude

Inactive Publication Date: 2015-05-20
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bias current IB is a quiescent current and remains constant during the operation of the VCO, so this current increases the DC power consumption of the VCO

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 with feedback and circuit provided with the same
  • Voltage-controlled oscillator with feedback and circuit provided with the same
  • Voltage-controlled oscillator with feedback and circuit provided with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The embodiments of the voltage-controlled oscillator with feedback proposed by the present invention will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0016] In one embodiment, a VCO circuit with feedback such as figure 2 As shown, it includes the first MOS transistor MP1, the second MOS transistor MP2, the third MOS transistor MN3, the fourth MOS transistor MN4, the LC resonance unit, the fifth MOS transistor MN5, the sixth MOS transistor MN6, the seventh MOS transistor MN7, The eighth MOS transistor MN8 and the reference current source IREF. For ease of description, the first to eighth MOS transistors are referred to as MP1, MP2, MN3, MN4, MN5, MN6, MN7 and MN8 below, respectively.

[0017] refer to figure 2 , in this voltage controlled oscillator, MP1 tube and MP2 tube form a negative ...

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

A voltage-controlled oscillator with feedback comprises a first metal oxide semiconductor (MOS) tube, a second MOS tube, a third MOS tube, a fourth MOS tube, a launch control (LC) resonance unit, a fifth MOS tube, a sixth MOS tube, a seventh MOS tube, an eighth MOS tube and a reference current source. Grid electrodes of the fifth MOS tube and the sixth MOS tube are respectively connected with two output ends of differential output voltage of the voltage-controlled oscillator. Drain electrodes of the fifth MOS tube and the sixth MOS tube are respectively connected with supply voltage. Source electrodes of the fifth MOS tube and the sixth MOS tube are respectively connected with the reference current source and a drain electrode and a grid electrode of the seventh MOS tube. A current mirror is formed by the seventh MOS tube and the eighth MOS tube and bias current is offered for a differential oscillating circuit through the eighth MOS tube. A circuit comprises the voltage-controlled oscillator. Due to dynamic bias to the voltage-controlled oscillator, direct current power consumption is reduced.

Description

technical field [0001] The invention belongs to the field of analog circuit design, in particular to a voltage-controlled oscillator with feedback and a circuit. Background technique [0002] The fully differential negative resistance LC voltage-controlled oscillator (VCO) using a bias current source can output a differential oscillation signal. The amplitude of the output signal is controlled by the bias current source, so it is relatively stable, with high frequency accuracy and low phase noise. And other characteristics, it has a wide range of applications in the clock generation circuit and so on. [0003] A typical VCO circuit such as figure 1 As shown, where IB is the bias current source, and the current mirror composed of MN6 and MN5 tubes provides the bias current to the oscillation circuit. However, the bias current IB is a quiescent current and remains constant during the operation of the VCO, so this current increases the DC power consumption of the VCO. Conte...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H03B5/04
Inventor 王自强宋奕霖姜珲张春麦宋平姜汉钧王志华
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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