Mixer based on current multiplexing technology

A technology of current multiplexing and mixer, which is applied in the direction of electrical components, modulation transformation balance device, modulation transfer, etc., can solve the problems of power consumption increase, achieve the effect of improving linearity, increasing conversion gain, and reducing energy consumption

Pending Publication Date: 2018-03-23
GUANGXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the mixer is also the main energy-consuming part of the front-end circuit of the receiver. After the linearity is improved, its power consumption will increase

Method used

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  • Mixer based on current multiplexing technology
  • Mixer based on current multiplexing technology
  • Mixer based on current multiplexing technology

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Embodiment Construction

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0027] Such as figure 1 As shown, the mixer based on current multiplexing technology includes a transconductance stage circuit 1, a switch stage circuit 2 and a load stage circuit 3; the transconductance stage circuit 1, switch stage circuit 2 and load stage circuit 3 are connected in sequence; The transconductance stage circuit 1 adopts a current multiplexing structure and a source degenerate inductance structure;

[0028] The transconductance level circuit 1 is used to access the radio frequency voltage signal, convert the radio frequency voltage signal into a radio frequency current signal, and repeatedly use the radio frequency current signal;

[0029] The switch level circuit 2 is used to access the local osci...

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Abstract

The invention relates to a mixer based on the current multiplexing technology. The mixer comprises a trans-conductance stage circuit, a switching stage circuit and a load stage circuit that are connected successively. The trans-conductance stage circuit employs a current multiplexing structure and a source degeneration inductance structure. The trans-conductance stage circuit is used for realizingaccess of a radio-frequency voltage signal, converting the radio-frequency voltage signal into a radio-frequency current signal, and reusing the radio-frequency current signal repeatedly. The switching stage circuit is used for realizing access of a local oscillator signal and a radio-frequency current signal, controlling conduction of a plurality of arranged switching tubes alternately based onthe local oscillator signal, carrying out switching modulation on the radio-frequency current signal by alternate conduction of the plurality of arranged switching tubes, and generating an intermediate-frequency current signal and transmitting the signal to the load stage circuit. The load stage circuit is used for converting the intermediate-frequency current signal into a voltage signal and outputting the converted signal. Compared with the prior art, the mixer has advantages of simple structure, high conversion gain, high linearity, low noise, low power consumption, and good port isolationperformance.

Description

technical field [0001] The invention relates to the technical field of mixers, in particular to a mixer based on current multiplexing technology. Background technique [0002] With the rapid development of wireless communication, technologies such as the Internet of Things and mobile communication have brought great changes to people's lives. The rapid development of the Internet of Things technology makes people's demand for communication equipment continue to increase, and its performance requirements are getting higher and higher. The RF receiver is an important module of wireless communication, and its performance index affects the entire wireless communication system, so the design of the front-end chip of the RF receiver must develop in the direction of low power consumption, low cost, high performance, and high integration. Among them, the mixer is the main component of the RF receiver, and it is also the strongest part of the RF front-end signal, so the performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03D7/14
CPCH03D7/1441H03D7/1491
Inventor 宋树祥李桂琴
Owner GUANGXI NORMAL UNIV
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