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. 31, 2011
Filed:
Nov. 08, 2007
Yasufumi Sasaki, Kanagawa, JP;
Yasufumi Sasaki, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
According to the present invention, there is provided a transmission circuit transmitting a power signal using frequency hopping system from an antenna connected to the transmission circuit through a transmission path, the transmission circuit including: a controller outputting an amplitude set value for each hopping frequency of the power signal before being transmitted according to power level of the power signal at the antenna; a pre-driver controlling the amplitude of the power signal before being transmitted for each hopping frequency according to the amplitude set value; and a power amplifier outputting the power signal to the transmission path according to the signal output from the pre-driver.