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 7570622 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 04, 2009

Filed:

Oct. 30, 2007
Applicants:

Takao Totsuka, Fujisawa, JP;

Takashi Shiba, Yokosuka, JP;

Osamu Hikino, Yokohama, JP;

Inventors:

Takao Totsuka, Fujisawa, JP;

Takashi Shiba, Yokosuka, JP;

Osamu Hikino, Yokohama, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/46 (2006.01);
U.S. Cl.
CPC ...
Abstract

A high-frequency circuit has a duplexer and a filter. The duplexer performs wave separation of send and received signals as input thereto. The filter filters the input send signal. When the send and received signals of the first modulation method are input, the send signal and the received signal of the first modulation method are wave-separated and output by the duplexer. When the received signal of the first modulation method is input, the send signal and the received signal of the first modulation method are wave-separated and output by the duplexer, and the send signal of the second modulation method is filtered by the filter.


Find Patent Forward Citations

Totsuka, Takao. (2009). High-frequency circuit apparatus and communication apparatus using the same (U.S. Patent No. 7570622). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7570622

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