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Multi-level power amplifier

A technology of power amplifiers and amplifiers, applied in amplifiers, amplifier types, low-noise amplifiers, etc., to achieve the effects of size reduction, increased power efficiency, and reduced production costs

Inactive Publication Date: 2007-01-17
SKYWORKS SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, this technology still requires a discrete control die

Method used

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Embodiment Construction

[0021] 1 Overview

[0022] Although efficient multistage power amplifiers are described in detail with reference to transceivers used in wireless communication devices, in any system where both high and low power amplification is desired and at low power amplification operating points are not equal to This highly efficient multistage power amplifier can be used in any system that amplifies 50% of the high level power operating point. Moreover, it is possible to implement a highly efficient multi-stage power amplifier with software, hardware, or a combination of software and hardware. In at least one embodiment, selected portions of a high-efficiency multi-stage power amplifier are implemented in hardware and software. The hardware part of the present invention can be implemented using dedicated hardware logic. Software portions can be stored in memory and executed by a suitable instruction execution system (microprocessor). A hardware implementation of an efficient multista...

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Abstract

A high efficiency, multiple power output power amplifier uses a pair of amplifiers (214, 216) having similar characteristics coupled to a pair of radio frequency RF couplers (204, 222). When both amplifiers (214, 216) are operating, the power output (RF OUTPUT) is the sum of the outputs of the two amplifiers (214, 216). When lower power operation is desired, one of the amplifiers (214, 216) is turned off and a high impedance is presented to the isolated port of the output RF coupler (222), thereby ensuring that all of the power output (RF OUTPUT) of the remaining power amplifier is available for output.

Description

[0001] Priority Claims and Cross-References to Related Applications [0002] This application claims priority to the following pending and generally assigned US patent application which relates to and further describes other aspects of the disclosed embodiments of this application and is incorporated by reference in its entirety. [0003] US Patent Application Serial No. 09 / 686,440 for "Efficient Multi-Power Stage Amplifier" filed on October 10, 2000, Attorney Docket No. 99RSS386. technical field [0004] The present invention relates generally to maximizing the efficiency of radio frequency power amplifiers in transmitters of wireless communication devices, and more particularly to efficient multistage power amplifiers. Background technique [0005] Mobile communication systems are becoming more prevalent with the increasing availability of high-efficiency, low-cost electronic modules. For example, there are many variations of communication schemes in which various frequen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/14H03F3/60
CPCH03F2200/294H03F2200/372H03F2200/198H03F3/602H03F1/14
Inventor 程乃朔凯文·崔马克·布洛姆
Owner SKYWORKS SOLUTIONS INC
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