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:
Jul. 14, 2009
Filed:
May. 26, 2006
Takeshi Ikeda, Ohta-ku, JP;
Hiroshi Miyagi, Kohoku-ku, JP;
Takeshi Ikeda, Ohta-ku, JP;
Hiroshi Miyagi, Kohoku-ku, JP;
Niigata Seimitsu Co., Ltd., Jyoetsu-shi, JP;
Abstract
A received signal level is detected in each of a wide band, middle band, and narrow band and each detected signal is converted to a digital signal. A DSPdetermines the enabled/disabled state of an LNAand an attenuatoras well as a gain adjustment amount based on the signal level of each band. For example, the gain adjustment is not performed when the signal level of the narrow band including a desired frequency is not larger than a prescribed value even the signal level of the wide band or middle band is larger than a prescribed value. When the signal level of the narrow band is larger than the prescribed value exceeding a gain adjustable limit level in the attenuator, the gain of the LNAis adjusted, while maintaining the gain adjustable amount in the attenuatoraround the limit level, to reduce the gain as a whole.