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:
Aug. 01, 2017

Filed:

Mar. 04, 2013
Applicants:

Satoshi Yoshima, Chiyoda-ku, JP;

Masaki Noda, Chiyoda-ku, JP;

Masamichi Nogami, Chiyoda-ku, JP;

Inventors:

Satoshi Yoshima, Chiyoda-ku, JP;

Masaki Noda, Chiyoda-ku, JP;

Masamichi Nogami, Chiyoda-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 1/02 (2006.01); H03F 3/21 (2006.01); H03F 3/19 (2006.01); H03G 3/30 (2006.01); H03F 1/42 (2006.01); H03F 3/191 (2006.01); H03G 9/24 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0288 (2013.01); H03F 1/42 (2013.01); H03F 3/19 (2013.01); H03F 3/191 (2013.01); H03F 3/211 (2013.01); H03F 3/45098 (2013.01); H03G 3/3036 (2013.01); H03G 9/24 (2013.01); H03F 2203/45038 (2013.01); H03F 2203/45296 (2013.01); H03F 2203/45298 (2013.01); H03F 2203/45372 (2013.01); H03F 2203/45374 (2013.01); H03F 2203/45396 (2013.01); H03F 2203/45494 (2013.01); H03F 2203/45594 (2013.01);
Abstract

Provided is an emphasis circuit capable of obtaining a desired emphasis amount with which waveform deterioration of an output signal in a high frequency band (high frequency band deterioration) is suppressed without increasing power consumption (current consumption). In the emphasis circuit, a baseband amplifier section and a peaking amplifier section are connected in parallel to each other, and respective drive current setting sections are adjusted to adjust respective drive current values thereof so that the sum of the drive current value of the baseband amplifier section and the drive current value of the peaking amplifier section may be constant.


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