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

Low power consumption and high linearity gain controllable active orthogonal frequency mixer

A quadrature mixer, high linearity technology, applied in the field of radio frequency communication, can solve the problem of increasing power consumption

Active Publication Date: 2014-03-26
BEIJING CEC HUADA ELECTRONIC DESIGN CO LTD
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this structure is: when the mixer handles large signals, the op amp must have enough overdrive voltage so that it can handle large signals and avoid reducing the linearity index; the improvement of the linearity of the mixer needs to increase two op amp power consumption

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
  • Low power consumption and high linearity gain controllable active orthogonal frequency mixer
  • Low power consumption and high linearity gain controllable active orthogonal frequency mixer
  • Low power consumption and high linearity gain controllable active orthogonal frequency mixer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] When the RF circuit adopts a deep submicron process, the parasitic will be reduced to a certain extent, and the operating frequency can be higher. However, with the progress of the technology, the working voltage of the tube is also reduced, which brings many challenges to the design of the RF circuit, especially the RF front end of the transmitter. How to make the transmitter module under low power supply voltage Having better linearity is the difficulty of completing the transmitter design under the technology with smaller feature size.

[0031] The function of the transmitter is to convert the useful baseband signal to the radio frequency domain, and then the signal in the radio frequency domain is amplified by the radio frequency amplifier to transmit the signal to the antenna and radiate the transmission medium. The circuit part connecting the baseband signal and the radio frequency signal is a mixer. This module mixes the analog baseband signal with the local osc...

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 discloses a low power consumption and high linearity gain controllable active orthogonal frequency mixer. The frequency mixer is mainly used in a radio frequency front-end circuit, carries out up-conversion on an intermediate frequency signal, and converts a useful signal to a radio frequency domain, so that an antenna radiates the useful signal to a transmission medium. A large signal is processed in a radio frequency transmitter channel, and large distortion of the signal should be avoided, so that a module in a transmission channel should have high linearity. According to the invention, a differential operational amplifier and feedback technology is used to improve the linearity of a transconductance line of the traditional Gilbert unit; a switch resistor array is added to realize the configuration of frequency mixer gain; an orthogonal conversion structure can effectively inhibit the generation of an image signal; and the pressure of filtering of the radio frequency domain is reduced.

Description

technical field [0001] The invention relates to a mixer used in a transmitter in a radio frequency front-end circuit, and belongs to the field of radio frequency communication. Background technique [0002] In recent decades, wireless communication technology has developed rapidly, which is mainly due to the continuous growth of people's demand for wireless products. At the same time, radio frequency circuits used in wireless communication are also developing toward high integration and low power consumption. When the power supply voltage is constant, CMOS radio frequency integrated circuits often achieve high linearity through ingenious circuit technology, but this often sacrifices part of the power consumption. [0003] The RF front-end circuit is divided into two parts: transmitter and receiver. The role of the transmitter is to convert the baseband signal to the radio frequency domain, and then amplify and filter the signal in the radio frequency domain, and then propa...

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): H03D7/16
Inventor 孙志刚李罗生
Owner BEIJING CEC HUADA ELECTRONIC DESIGN 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