Quadrature push-push voltage-controlled oscillator based on circle structure

A voltage-controlled oscillator and ring structure technology, applied in the field of microelectronics, can solve the problems of amplifier difficulty and oscillation signal difficulty, and achieve the effect of increasing frequency

Inactive Publication Date: 2014-12-10
HANGZHOU DIANZI UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For quadrature voltage-controlled oscillators, it is quite difficult to generate such a high-frequency oscillation signal, especially when the required frequency is close to the cut-off frequency f of the oscillator's active components T Time
For passive polynomial filters, in addition to the above-me

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
  • Quadrature push-push voltage-controlled oscillator based on circle structure
  • Quadrature push-push voltage-controlled oscillator based on circle structure
  • Quadrature push-push voltage-controlled oscillator based on circle structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] The invention provides an orthogonal push-push voltage-controlled oscillator based on a ring structure. Using the phase relationship between the output signals in the ring oscillator composed of four-stage inverting amplifiers, combined with the harmonic selection element to extract the second harmonic in each output signal, construct a push-push voltage-controlled oscillator with quadrature output to realize Generation of quadrature local oscillator signals at the transceiver front end of millimeter wave, submillimeter wave, especially in the terahertz frequency band.

[0017] Such as image 3 As shown, the present invention includes four-stage delay units, the first output terminal Vout_f of the first-stage delay unit D1 is connected to the non-inverting input terminal Vin+ of the second-stage delay unit D2, and the second output term...

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 quadrature push-push voltage-controlled oscillator based on a circle structure. The oscillator comprises a four-stage delay unit, the phase relation between output signals in a circle oscillator constructed by a four-stage inverting amplifier is combined with a harmonic wave selection element to extract secondary harmonic waves in the output signals, mutually quadrature phases of the extracted secondary harmonic waves are used as the output of the circle structure so as to form the push-push voltage-controlled oscillator in quadrature output. Under the condition that the process is limited, the structure can effectively improve the frequency of the quadrature local oscillator output signal, and the structure can be used for providing a high-quality quadrature oscillator signal for millimeter wave, submillimeter wave, in particular a terahertz frequency band transceiving front end.

Description

technical field [0001] The invention belongs to the technical field of microelectronics and relates to an orthogonal push-push voltage-controlled oscillator based on a ring structure. Background technique [0002] According to different structures, wireless transceiver front-ends can be divided into superheterodyne receivers, low-IF receivers, and zero-IF receivers. Among them, zero-IF receivers have attracted more and more attention because they can be integrated on a single chip. In this structure, the radio frequency signal is mixed with two orthogonal local oscillator signals to directly generate the baseband signal. The phase error and amplitude mismatch of the two quadrature local oscillator signals will directly affect the image rejection capability and demodulation performance of the receiver. At the same time, since the circuit that generates the local oscillator signal works at the highest frequency of the circuit, its frequency output capability and power consump...

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): H03L7/099
Inventor 高海军孙玲玲
Owner HANGZHOU DIANZI UNIV
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