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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9484864 B1

PDFFull Text
Date of Patent:
Nov. 01, 2016

Filed:

Jun. 21, 2012

Doherty amplifier

Applicants:

Zhongyu Liao, Beijing, CN;

Yuanchun Xie, Beijing, CN;

Inventors:

Zhongyu Liao, Beijing, CN;

Yuanchun Xie, Beijing, CN;

Assignee:

TELEFONAKTIEBOLAGET L M ERICSSON, Stockholm, SE;

Attorneys:

Patents on Demand, P.A.

Brian K. Buchheit

Scott M. Garrett

Primary Examiner:

Henry Choe

Int. Cl.
CPC ...
H03F 1/02 (2006.01); H03F 3/21 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01); H03F 3/60 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0288 (2013.01); H03F 1/565 (2013.01); H03F 3/21 (2013.01); H03F 3/245 (2013.01); H03F 3/602 (2013.01); H03F 2200/255 (2013.01); H03F 2200/387 (2013.01); H03F 2200/543 (2013.01); H03F 2200/546 (2013.01); H03F 2203/21139 (2013.01);
Abstract

A Doherty amplifier () is provided, it comprises: a main amplifier () and a peak amplifier (); a first microstrip () with λ/4 electric length connected between the main amplifier and the peak amplifier; a second microstrip () with λ/4 electric length connected between a junction of outputs of the peak amplifier and the main amplifier, and an output terminal (); at least a tuner () for adjusting radius of VSWR circle of the main amplifier and connected, in series with the first microstrip (), between the main amplifier () and the peak amplifier () based on input signal power. The hack-off power level efficiency is increased by enlarge the VSWR radius with the new Doherty structure.

Find Patent Forward Citations

Liao, Zhongyu. (2016). Doherty amplifier (U.S. Patent No. 9484864). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9484864

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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