Multi-band high-efficiency doherty amplifier

A technology of main amplifier and peak amplifier, applied in the direction of power amplifier, dual-band/triple-band amplifier, amplifier, etc.

Inactive Publication Date: 2013-01-23
PROVENANCE ASSET GRP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, this shortcoming limits the BW of Doherty's efficient work to a maximum of 5-7%

Method used

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  • Multi-band high-efficiency doherty amplifier
  • Multi-band high-efficiency doherty amplifier
  • Multi-band high-efficiency doherty amplifier

Examples

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Embodiment Construction

[0022] Embodiments of the invention will now be described more fully with reference to the accompanying drawings. Similar elements on the drawings are designated by like reference numerals.

[0023] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It is also to be understood that the term "comprising" as used herein refers to the presence of stated features, integers, steps, operations, elements and / or parts, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements , components, and / or groups thereof.

[0024] The present invention will now be described with reference to the accompanying drawings. In the drawings, various structures, systems and devices are schematically shown for purposes of explanation only, so as not to obscure the present invention with details that are well known to those skilled in the art. Re...

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Abstract

The present invention relates to a Multi-Band Doherty amplifier. Embodiments of the present invention provide an amplifying structure including a main amplifier configured to amplify a first signal, a peak amplifier configured to amplify a second signal, a tunable impedance inverter configured to perform impedance inversion to modulate a load impedance of the main amplifier, and a combining node configured to receive the amplified second signal from the peak amplifier and an output of the tunable impedance inverter. The tunable impedance inverter includes a tuner configured to tune the impedance inversion over at least one broad frequency band. The tuner is (i) at least one capacitor, (i) at least one varactor, or (ii) at least one open stub shunted by a diode.

Description

Background technique [0001] Wireless communication standards are changing all the time to accommodate the large volumes of data transfers required among today's consumers. As a result, operators of wireless communication systems incur additional costs resulting from upgrading the wireless system or completely replacing deployed sites. Moreover, constant changes in wireless communication standards disrupt base station vendors' product strategies and product portfolios. Multi-standard or multi-band radio base stations are one option that can reduce deployment costs for operators and production costs for suppliers of network infrastructure components. Specifically, the transceiver power amplifier is one of the most critical components in a wireless base station. Today's power amplifiers not only need to be very efficient to keep base station operating expenses (OPEX) low, but must also be broadband enough to work in multi-band systems. [0002] Due to its simplicity, a Doherty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F3/24H03F1/56H03F3/60
CPCH03F2200/423H03F1/56H03F2200/378H03F2200/387H03F1/0288H03F3/602H03F2200/198H03F2200/204H03F2200/111H03F2200/543H03F3/24H03F1/02H03F3/60
Inventor I·阿西莫维克N·奥塔莱布
Owner PROVENANCE ASSET GRP LLC
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