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:
May. 18, 2010

Filed:

Oct. 24, 2007
Applicants:

Takao Atsumo, Kanagawa, JP;

Hiroshi Mizutani, Kanagawa, JP;

Tatsuya Miya, Kanagawa, JP;

Inventors:

Takao Atsumo, Kanagawa, JP;

Hiroshi Mizutani, Kanagawa, JP;

Tatsuya Miya, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A phase shifter selectively switches between a low-pass filterand a high-pass filterusing single pole double throw switchesandprovided on the input and output sides, respectively, and operatively linked to each other. The single pole double throw switchesandinclude FETs Qand Qthat connect single pole side junctions and the low-pass filter, respectively, and inductance circuits (Land R, and Land R) connected in parallel with FETs Qand Q, respectively. The inductance circuits are respectively comprised of the inductor Land the resistor Rconnected in series and of the inductor Land the resistor Rconnected in series.


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