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, 2012
Filed:
Feb. 12, 2009
Nobuhiro Shiramizu, Musashino, JP;
Toru Masuda, Kokubunji, JP;
Takahiro Nakamura, Kodaira, JP;
Katsuyoshi Washio, Tokorozawa, JP;
Masamichi Tanabe, Tokyo, JP;
Nobuhiro Shiramizu, Musashino, JP;
Toru Masuda, Kokubunji, JP;
Takahiro Nakamura, Kodaira, JP;
Katsuyoshi Washio, Tokorozawa, JP;
Masamichi Tanabe, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides a semiconductor integrated circuit including an active mixer circuit that is operated at low voltage, low noise, and low power consumption. It includes a transconductance amplifier, a transformer, and a multiplier, connects a transformer between the transconductance amplifier and the multiplier, and separates between the transconductance amplifier and the multiplier with respect to direct current inside the transformer. Further, each of the tranconductance amplifier and the multiplier is configured of transistors that are single-stacked between the supply voltage terminal and ground terminal.