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Apparatus and method for class-G line driver control signal

A line driver and control signal technology, applied in amplifiers, power amplifiers, components of amplifying devices, etc., can solve problems such as power consumption of line drivers

Inactive Publication Date: 2012-06-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to handle high signal peaks, the line driver requires a high supply voltage greater than the average signal value, which in turn can consume a lot of power in the line driver

Method used

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  • Apparatus and method for class-G line driver control signal
  • Apparatus and method for class-G line driver control signal
  • Apparatus and method for class-G line driver control signal

Examples

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Embodiment Construction

[0021] It should be understood at the outset that although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but may be limited within the scope of the appended claims and their equivalents. Modify within the complete scope of the object.

[0022] Line drivers may be used in DSL systems where signals (eg DMT modulated signals) may be transmitted over multiple subscriber lines, eg in Asymmetric DSL (ADSL) or Very High Bit Rate DSL (VDSL) systems. A DSL system may include a central office (CO) switch that may be coupled via subscriber lines to a plurality of customer premises equipment (CPE). The DSL system may also inc...

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Abstract

An apparatus comprising an input, a control signal generator coupled to the input and having a control signal generator output, and an amplifier coupled to the control signal generator output, wherein a voltage supplied to the amplifier is switched based on the control signal generator output, and wherein the control signal generator output is based on a data signal in the input. Also included is an apparatus comprising circuitry configured to implement a method comprising detecting an incoming signal, calculating a derivative of the incoming signal, estimating a future incoming signal based on the derivative of the incoming signal and a time step, and providing the estimated future incoming signal to switch between a first supply voltage and a second supply voltage prior to or concurrent with an arrival of the future incoming signal at the switch, wherein the incoming signal and the future incoming signal are analog signals.

Description

[0001] This application claims U.S. Provisional Patent Application No. 61 / 187,948, filed June 17, 2009, entitled "Class G Line Driver Control Signals," and filed February 1, 2010, entitled "Class G Line Driver Control Signals" application number 12 / 697,913, the content of which is incorporated herein by reference in its entirety. Background of the invention [0002] In a communication system, analog and / or digital signals are converted into a final format that can be conveyed via the communication channel medium. Depending on the channel medium, the final signal format will be different. For example, in wired communication systems, power amplifiers may be used to transmit analog signals into the final communication medium, such as copper wire or fiber optics. In wireless communication systems, power amplifiers may be used to transmit analog signals into the air. In the case of wired communication systems, the power amplifier is called a line driver. Line drivers are designe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02
CPCH03H11/18H04L25/03885H04L25/0286H03F3/21H03F2200/504H03F2200/507H04L25/03019H03F2200/511H04L25/03343H03F1/025
Inventor 莫哈洁日·赫山姆H·法兹罗拉·阿米尔
Owner HUAWEI TECH CO LTD