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:
Feb. 21, 2006
Filed:
Mar. 15, 2002
Eiji Taniguchi, Tokyo, JP;
Chiemi Sawaumi, Tokyo, JP;
Noriharu Suematsu, Tokyo, JP;
Kenichi Maeda, Tokyo, JP;
Takayuki Ikushima, Tokyo, JP;
Hiroyuki Joba, Tokyo, JP;
Yoshinori Takahashi, Tokyo, JP;
Eiji Taniguchi, Tokyo, JP;
Chiemi Sawaumi, Tokyo, JP;
Noriharu Suematsu, Tokyo, JP;
Kenichi Maeda, Tokyo, JP;
Takayuki Ikushima, Tokyo, JP;
Hiroyuki Joba, Tokyo, JP;
Yoshinori Takahashi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A frequency converter includes a transistor pair having a first transistor and a second transistor respectively having collector terminals commonly connected to each other and emitter terminals commonly connected to each other, the commonly-connected collector terminals of the transistor pair being connected to a power supply terminal by way of a first resistor, a third transistor having a collector terminal connected to the power supply terminal by way of a second resistor and an emitter terminal connected to the commonly-connected emitter terminals of the transistor pair, a third resistor having an end connected to the commonly-connected emitter terminals of the transistor pair, and another end grounded by way of a constant current source, and an output terminal connected to the commonly-connected collector terminals of the transistor pair. The frequency converter can exhibit an excellent saturation characteristic and an excellent distortion characteristic even when operating from a low voltage and/or a low current.