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.

Date of Patent:
Jun. 10, 2025

Filed:

Apr. 18, 2022
Applicant:

Mitsubishi Electric Corporation, Tokyo, JP;

Inventors:

Shuichi Sakata, Tokyo, JP;

Yuji Komatsuzaki, Tokyo, JP;

Shintaro Shinjo, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/21 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0288 (2013.01); H03F 1/56 (2013.01); H03F 3/211 (2013.01); H03F 2200/451 (2013.01);
Abstract

A Doherty amplifier is configured in such a manner that: the ratio Z/Zof a characteristic impedance Zof a second transmission line to a characteristic impedance Zof a first transmission line is a power division ratio P/Pof a signal to be amplified between a carrier amplifier and a peak amplifier when both of the carrier amplifier and the peak amplifier are saturated; and a resistance value Rof a resistor is a value obtained by multiplying, by a proportionality coefficient w which is equal to or greater than 0 but less than 1, the sum of the input impedance Zof the carrier amplifier when the carrier amplifier reaches saturation and the input impedance Zof the peak amplifier when the peak amplifier reaches saturation.


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