Unlock instant, AI-driven research and patent intelligence for your innovation.

Nonlinear compensation power amplification circuit and polar coordinate transmitter

A power amplifier circuit, nonlinear compensation technology, applied in the direction of power amplifier, amplifier, amplifier control, etc., can solve the problem of modulation quality degradation, and achieve the effect of improving nonlinearity and solving spectrum generation

Active Publication Date: 2018-08-24
NANJING ZGMICRO CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a non-linear compensation power amplifier circuit and a polar coordinate transmitter, the purpose of which is to restore the amplified and combined signal to the original signal, and solve the problem of out-of-band spectrum generation and in-band modulation quality degradation The problem

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
  • Nonlinear compensation power amplification circuit and polar coordinate transmitter
  • Nonlinear compensation power amplification circuit and polar coordinate transmitter
  • Nonlinear compensation power amplification circuit and polar coordinate transmitter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] figure 1 It is a circuit diagram in the prior art. Such as figure 1 As shown, the circuit includes: a digital-to-analog (D / A) converter 1, a filter 1, a D / A converter 2, a filter 2, a mixer, at least one PA and a decoder. exist figure 1 Only 3 PAs are used as an example.

[0027] The Cartesian (I and Q) components of the phase signal of the input signal are generated at baseband by a sine-cosine transform of the original phase signal. ...

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 embodiment of the invention provides a nonlinear compensation power amplification circuit and a polar coordinate transmitter. The nonlinear compensation power amplification circuit comprises a polar coordinate signal generator, a first digital-to-analog converter, a first filter, a second digital-to-analog conversion, a second filter, a mixer, a decoder, and at least one power amplifier, wherein the polar coordinate generator comprises a gain divider, and the gain divider allocates corresponding gain factors to the phase and the amplitude based on system gain requirements. Thereby, the nonlinearity of the power amplifier is improved, and the problems of out-of-band spectrum generation and degradation of in-band modulation quality are solved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a nonlinear compensation power amplifier circuit and a polar coordinate transmitter. Background technique [0002] The polar coordinate transmitter amplifies the amplitude signal and phase signal of the signal respectively and combines them, and then restores the combined signal to the original signal. [0003] In existing polar transmitters, the Cartesian (I and Q) components of the phase signal are generated at baseband by the sine-cosine transformation of the original phase signal. After conversion, the bandwidth of the phase signal is reduced. The I and Q components of the phase signal are used as the input of the upconverter, so that the upconverter outputs a radio frequency carrier through phase modulation. The amplitude modulation of the radio frequency carrier is realized through a power amplifier, and the power amplifier is turned on and controlled by a var...

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 Applications(China)
IPC IPC(8): H03F3/24H03G3/30
CPCH03F3/245H03G3/3042
Inventor 李明原吴悦
Owner NANJING ZGMICRO CO LTD