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.

Date of Patent:
Jul. 21, 2015

Filed:

May. 16, 2012
Applicants:

Amr Zohny, Erlangen, DE;

Stephan Leuschner, Munich, DE;

Jan-erik Mueller, Ottobrunn, DE;

Inventors:

Amr Zohny, Erlangen, DE;

Stephan Leuschner, Munich, DE;

Jan-Erik Mueller, Ottobrunn, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/22 (2006.01); H03F 3/193 (2006.01);
U.S. Cl.
CPC ...
H03F 3/193 (2013.01);
Abstract

An amplifier includes a first lower active sub cell and a second lower active sub cell, each comprising an input terminal and an output terminal, wherein the input terminals of the lower active sub cells are connected to the amplifier input and the output terminals of the lower active sub cells are not shorted. Furthermore, the amplifier includes a first upper active sub cell and a second upper active sub cell, each including a biasing terminal, wherein the input terminals and the output terminals of the upper active sub cells are coupled between the output terminals of the lower active sub cells and the amplifier output. The amplifier includes a bias controller configured to provide a first biasing signal to the first upper active sub cell and a second biasing signal to the second upper active sub cell based on an output power of the output signal.


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