Apparatus and method for use with an amplifier circuit

摘要

An output network for use with a multi-transistor amplifier circuit comprises N transistors configured to provide a Chireix outphasing behavior. The N transistors coupled to receive different amplitude and/or phase signals relative to a source signal. The output network comprises: a plurality of branches arranged in a hierarchical structure between N input nodes and an output node; at least one branch connection arranged between the input nodes and the output node, wherein each branch connection is arranged to couple first and second branches from an input side to a single branch on an output side. The hierarchical structure is arranged asymmetrically such that at least one branch connection comprises a different number of input nodes ultimately connected to its first branch compared to the number of input nodes ultimately connected to its second branch.

主权项

1. An output network for use with a multi-transistor amplifier circuit comprising N transistors configured to provide a Chireix outphasing behaviour, the N transistors coupled to receive different amplitude and/or phase signals relative to a source signal, the output network comprising:
a plurality of branches arranged in a hierarchical structure between N input nodes and an output node; at least one branch connection arranged between the input nodes and the output node, wherein each branch connection is arranged to couple first and second branches from an input side to a single branch on an output side; wherein the hierarchical structure is arranged asymmetrically such that at least one branch connection comprises a different number of input nodes ultimately connected to its first branch compared to the number of input nodes ultimately connected to its second branch.