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A line driver

A line driver and line driver technology, applied in the parts of the amplifier device, improving the amplifier to reduce nonlinear distortion, baseband system parts, etc. The effect of power consumption and cooling costs

Active Publication Date: 2020-10-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present application provides a line drive device to solve the problem in the prior art that the line drive is powered by a charge pump, resulting in a large ineffective power consumption of the line drive

Method used

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Embodiment Construction

[0067] The structure of the line driving module 200 in the prior art is as follows figure 2 As shown, it includes a signal output module 201, a peak detection module 202, a charge pump module 203, a delay module 204 and a line driver 205, wherein the input of the peak detection module 202 is connected to the output of the signal output module 201, and the peak detection module The output end of 202 is connected with the input end of charge pump module 203, and the output end of charge pump module 203 is connected with an input end of line driver 205, and the input end of delay module 204 is connected with the output end of signal output module 201, time delay An output of the module 204 is connected to another input of a line driver 205 .

[0068] The signal output module 201 is used to output the signal to be amplified to the peak detection module 202 and the delay module 204 . If the line driver module 200 is set in an xDSL communication device, the signal output module 20...

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Abstract

The present application provides a line driving device, which includes: a signal output module, configured to output a first signal to a first power supply module, output a second signal to a second power supply module, and output a third signal to a line driving module; A power supply module, used to generate a corresponding first voltage according to the amplitude of the first signal at each moment, and output the first voltage to the line driving module, the amplitude of the first voltage at the moment is the same as the first voltage The difference of the amplitude of a signal at this moment is within the set range; the second power supply module is used to judge whether the absolute value of the second signal amplitude is greater than or equal to the set threshold, and if so, according to the second signal The amplitude generates a second voltage, and outputs the second voltage to the line driving module, otherwise, no signal is output, and the amplitude of the second voltage is greater than the amplitude of the second signal; the line driving module is used to The voltage and the second voltage perform power amplification on the third signal.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a line driving device. Background technique [0002] x digital subscriber line (x digital subscriber line, xDSL) communication equipment (such as modem (modem)) usually includes digital front end (digital front end, DFE), analog front end (analog front end, AFE), line driver (line driver, LD ) and hybrid circuits. Among them, DFE is used to perform digital signal processing on the signal input to DFE by external equipment, and realize the function of xDSL protocol. The LD is used to amplify the signal input from the AFE to the LD, the hybrid circuit is used to separate the signal output from the LD and the signal input from the external device to the hybrid circuit, couple the signal output from the LD to the transmission cable for transmission, and input the external device Signals to the hybrid are sent to the AFE. [0003] The line driver is the last po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H03F3/20H03F1/32
CPCH04L25/026H03F1/32H03F3/20H04L25/02H03F3/189H03F1/0222H03F1/025H03F3/24H03F2200/102H03F2200/435H03F2200/511
Inventor 赵治磊李东
Owner HUAWEI TECH CO LTD