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:
Mar. 26, 2002
Filed:
Oct. 06, 1999
Juha Kajava, Naantali, FI;
Nokia Corporation, Espoo, FI;
Abstract
A method is presented for biasing an attenuator circuit used in high frequency applications. The method can improve the stability of the AGC system, and in some cases also the control accuracy. An attenuator circuit is disclosed which comprises at least two attenuator members ( ) connected in series. In connection with the attenuator members ( ) in an attenuator circuit according to the invention there are connected a suitable number of biasing members ( ) with which the biasing currents of the attenuator members ( ) can be controlled to have different magnitudes, so that in an attenuation situation the attenuator members ( ) begin to conduct separately, controlled by the AGC circuit.