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. 10, 2009
Filed:
Oct. 20, 2003
Norio Hasegawa, Tokyo, JP;
Tetsuhiko Miyatani, Tokyo, JP;
Hisashi Kawai, Tokyo, JP;
Masami Yoshida, Tokyo, JP;
Jun Watanabe, Tokyo, JP;
Norio Hasegawa, Tokyo, JP;
Tetsuhiko Miyatani, Tokyo, JP;
Hisashi Kawai, Tokyo, JP;
Masami Yoshida, Tokyo, JP;
Jun Watanabe, Tokyo, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
A transmitter for averagedly suppressing the variation in input level of an amplifier according to variation in carrier level. The transmitter includes an input power calculation section for calculating mean input power of each carrier, an output power calculating section for calculating mean output power of each carrier after the carrier band is limited, a monitoring section for identifying a carrier having the maximum mean input power, acquiring the maximum value, acquiring the mean output power of the identified carrier, determining the ratio of the mean input power to the mean output power, and calculating level control information which is the ratio of the ratio determined above to a predetermined expected value, and a signal level adjusting section for adjusting the level of a multicarrier signal by multiplying the level control information outputted from the monitoring section.