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:
Sep. 28, 2004
Filed:
Sep. 13, 2002
Applicant:
Inventor:
Tapio Kuiri, Oulu, FI;
Assignee:
Nokia Corporation, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 ;
U.S. Cl.
CPC ...
H03F 3/68 ;
Abstract
A low noise amplifier ( ) is provided for amplifying signals in a frequency band. The low noise amplifier ( ) comprises several amplifying elements ( ) that share a load impedance ( ) and a degeneration impedance ( ). One of the amplifying elements ( ) is activated at a time that the rest are deactivated. The activation and deactivation is done by feeding a bias to a bias port ( ) or grounding the same, respectively. A signal to be amplified is fed to the corresponding input ( ) depending on which of the amplifying elements ( ) is activated. An amplified signal is obtained at an output ( ).