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Envelope tracking distributed amplifier

A technology for distributing amplifiers and filters, applied to amplifiers, amplifiers with distributed constants in coupling networks, amplifiers with semiconductor devices/discharge tubes, etc., can solve problems such as narrow bandwidth

Active Publication Date: 2015-06-24
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of matching typically results in a relatively narrow bandwidth (~5%) over which the PA operates efficiently and provides sufficient gain

Method used

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Embodiment Construction

[0021] discussed below in this patent document Figures 1 to 11 The various embodiments used to describe the principles of the disclosure are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably configured amplifier in a wireless networking system.

[0022] In certain embodiments of the present disclosure, the distribution amplifier is integrated with the envelope tracking path to provide an envelope tracking drain voltage to all transistors of the distribution amplifier simultaneously. In some embodiments, a distribution amplifier is integrated with a polar transmitter architecture to provide a phase modulated constant amplitude RF drive to the first transistor of the distribution amplifier and an envelope tracking drain voltage to all transistors simultaneously.

[0023] Due to industry changes that nee...

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Abstract

A system and method amplify a waveform in a wireless network. An envelope of a waveform is detected to form an envelope waveform. The envelope waveform is shaped to form a shaped waveform, the shaping based on one or more characteristics of a distributed amplifier. The shaped waveform is filtered to form a filtered waveform. The filtered waveform is amplified to form a first amplified waveform. The distributed amplifier amplifies at least a part the waveform based on the first amplified waveform to form a second amplified waveform.

Description

technical field [0001] This application relates generally to distribution amplifiers, and more particularly to an envelope tracking distribution amplifier. Background technique [0002] Both wireless mobile devices and infrastructure equipment require power amplifier circuits that operate with high efficiency. The battery life of a mobile device is very dependent on its power amplifier efficiency. The capital and operating costs of infrastructure equipment are heavily dependent on its power amplifier efficiency. In the past, much focus has been placed on optimizing the efficiency of power amplifiers. A power amplifier is usually matched to a 50 ohm load using a resonant matching network by using a single-stage common-source transistor circuit or a cascode transistor circuit. This type of matching typically results in a relatively narrow bandwidth (-5%) over which the PA operates efficiently and provides sufficient gain. [0003] For this reason, multi-band mobile devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/60
CPCH03F1/0222H03F3/245H03F3/607H03F2200/102H03F3/193H04B15/00
Inventor M.布罗布斯顿
Owner SAMSUNG ELECTRONICS CO LTD
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