Patent ID: 9634614
Date: 2017-04-25
CPC Classifications: H03F,H04L,H04W,Y02D

Claim:
1. A distributed power amplifier circuit, comprising: an amplifier arrangement comprising a plurality of sub amplifiers, each having an output port for outputting an output signal of the sub-amplifier; and an output combiner network for combining the output signals from the sub-amplifiers, the output combiner network comprising, for each sub-amplifier, an associated auto transformer operatively connected to the output port of the sub-amplifier for receiving the output signal of the sub-amplifier; the auto transformers each having a first interconnection terminal and a second interconnection terminal; the auto transformers are operatively connected in series via said interconnection terminals, thereby forming a chain of auto transformers having a first end and a second end, said first end being arranged to be connected to an antenna, the chain of auto transformers including a capacitor operatively connected in series between two successive auto transformers in the chain of auto transformers and configured to decouple DC voltages associated with the two successive auto transformers; the sub-amplifiers having differential output ports, each having a first output terminal and a second output terminal, each auto transformer comprising: for each sub-amplifier, the first output terminal and the second output terminal is operatively connected to the first input terminal and the second input terminal, respectively, of the associated auto transformer.