US 7,321,752 B2 | ||
Linear amplification arrangement with non-linear amplifier element for a mobile radio device | ||
Jörg Walbracht, Schulzendorf (Germany) | ||
Assigned to Siemens AG, München (Germany) | ||
Appl. No. 10/534,771 PCT Filed Jul. 14, 2004, PCT No. PCT/EP2004/051493 § 371(c)(1), (2), (4) Date May 13, 2005, PCT Pub. No. WO2005/025054, PCT Pub. Date Mar. 17, 2005. |
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Claims priority of application No. 103 40 812 (DE), filed on Sep. 04, 2003. | ||
Prior Publication US 2006/0014502 A1, Jan. 19, 2006 | ||
Int. Cl. H01Q 11/12 (2006.01); H04B 1/04 (2006.01) |
U.S. Cl. 455—127.1 [455/127.2; 455/127.5; 455/108; 455/110; 330/255; 330/262; 330/265; 330/276; 330/55; 330/122] | 8 Claims |
1. An apparatus for optimizing the efficiency of an amplifier arrangement comprising:
a non-linear power amplifier in a mobile radio device; and
a plurality of push-pull phase modifiers coupled to said amplifier,
wherein said phase modifiers generate a signal offset in phase from an input signal,
wherein the outputs of the phase modifiers are coupled to a passive component,
wherein a symmetrical transformer included in the amplifier arrangement is used as the passive component,
wherein a voltage is decoupled in the symmetrical transformer that is rectified in a rectifier, and wherein the direct current
output by the rectifier is fed to a supply unit as charge current, and
wherein a signal generated by the power amplifier is divided into two part signals of equal size and fed to the plurality
of phase modifiers.
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