Patent ID: 8319556

Claim:
An amplifier, comprising: an input transmission line network having: an input transmission line delay element disposed between a first portion of the input transmission line network and a second portion of the input transmission line network; a plurality of input transformers having primary windings coupled serially coupled through the input transmission line delay element, each one of the input transformers having a primary winding and a secondary windings magnetically coupled to a primary windings of the input transformer; an output transmission line network having: an output transmission line delay element disposed between a first portion of the output transmission line network and a second portion of the output transmission line network; a plurality of output transformers having secondary windings serially coupled through the output transmission line delay element, each one of the output transformers having a primary winding magnetically coupled to a corresponding one of the secondary windings of the output transformer; a plurality of amplifier sections, each one of the amplifier sections having an input connected to the secondary winding of a corresponding one of the input transformers and having an output connected to a corresponding one of the primary windings of the output transformers, and wherein the input transmission line network and the output transmission line network are arranged to combine signals passing from an input to the input transmission line network through the plurality of amplifier sections combine in-phase at an output of the output transmission line section.