DISTRIBUTED POWER AMPLIFIER CIRCUIT

摘要

A distributed power amplifier circuit is disclosed. The distributed power amplifier circuit comprises 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 includes, 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 have a first interconnection terminal and a second interconnection terminal. The auto transformers are operatively connected in series via the interconnection terminals, thereby forming a chain of auto transformers having a first end and a second end, wherein the first end is arranged to be connected to an antenna.

主权项

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 sub-amplifiers having differential output ports, each having a first output terminal and a second output terminal, each auto transformer comprising:
a first inductor segment between its first interconnection terminal and a first input terminal of the auto transformer;a second inductor segment between its first input terminal and a second input terminal of the auto transformer; anda third inductor segment between its second input terminal and its second interconnection terminal; and 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.