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.:
Date of Patent:
May. 28, 2013
Filed:
Sep. 29, 2010
Applicants:
Masayoshi Takahashi, West Bloomfield, MI (US);
Norio Chujo, Yokohama, JP;
Masami Makuuchi, Yokohama, JP;
Inventors:
Masayoshi Takahashi, West Bloomfield, MI (US);
Norio Chujo, Yokohama, JP;
Masami Makuuchi, Yokohama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit having a sensor with a stray capacitance value. An output from the sensor is connected to the input of an amplifier while a negative capacitance circuit is electrically connected in parallel with the sensor output. The negative capacitance circuit reduces the effect of the sensor stray capacitance to provide an increased bandwidth and decreased noise on the amplifier output.