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:
Aug. 07, 2012
Filed:
Mar. 26, 2010
Norio Hayashi, Tokyo, JP;
Satoshi Arayashiki, Tokyo, JP;
Takeshi Uchitomi, Tokyo, JP;
Tomomitsu Kitamura, Tokyo, JP;
Norio Hayashi, Tokyo, JP;
Satoshi Arayashiki, Tokyo, JP;
Takeshi Uchitomi, Tokyo, JP;
Tomomitsu Kitamura, Tokyo, JP;
Renesas Electronics Corporation, Kanagawa, JP;
Abstract
Variable operating currents are generated in relation to input signal power and output signal power and achieving both low noise and low power consumption. Emitter follower circuits are attached to output terminals of a frequency divider for generating a local signal. By adjusting the currents flowing through the emitter follower circuits, the amounts of currents flowing into mixers is adjusted. When the amounts of currents of local signals flowing into the mixers increases, the effect of noise suppression is expected. The amounts of the currents flowing through the emitter follower circuits is changed depending on the amplification factor of variable amplifiers.