Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Adrianus Van Bezooijen0
Dmitry Pavlovich Prikhodko0
Date of Patent
January 13, 2009
0Patent Application Number
105393830
Date Filed
November 20, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A power amplifier (100) suitable for use in mobile telecommunications equipment has a first stage (2) and an optional second stage (2), each stage being provided with a bias circuit (4, 5). To provide a well-defined gain characteristic, in the first stage (1) a bias current (Ib1) is fed into a signal amplifying transistor (T1). The first bias circuit (4) comprises non-linear a voltage/current converter (41) coupled to a current mirror (40). To suit alternative applications, such as GSM and UMTS requiring a different bias, plural voltage/current converters (41, 42) may be provided in parallel.
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