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:
Jan. 01, 2013
Filed:
Mar. 01, 2011
Tong Wang, Kawasaki, JP;
Toshiya Mitomo, Kawasaki, JP;
Tong Wang, Kawasaki, JP;
Toshiya Mitomo, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
There is provided a high-frequency differential amplifier circuit comprising: a first MOS transistor, a second MOS transistor, a first positive feedback element and a second positive feedback element. The first MOS transistor and the second MOS transistor each has a source connected to a first power source and a drain connected through loads to a second power source. The first and second MOS transistors receives at their gates, first and second input signals having phases reverse to each other. The first positive feedback element includes a first capacitor and a first variable resistance connected in series between the gate of the first MOS transistor and the drain of the second MOS transistor. The second positive feedback element includes a second capacitor and a second variable resistance connected in series between the gate of the second MOS transistor and the drain of the first MOS transistor.