Power efficient amplifier

A power efficient (PE) amplifier comprising:

• a cascode amplifier;
• a common base (CB) transistor amplifier;
• at least one voltage supply;
• wherein the CB transistor amplifier comprises:
• a plurality of transformers;
• wherein each of the plurality of transformers includes a primary and a secondary;
• wherein each primary is connected in series;
• wherein each secondary includes a secondary center tap;
• at least one plurality of differential pairs of transistors;
• wherein each transistor of
• each of the at least one plurality of differential pairs of transistors includes a base terminal, an emitter terminal, and a collector terminal;
• wherein one secondary of the plurality of transformers is connected across the emitter terminals of each of the transistors of each of the at least one plurality of differential pairs of transistors;
• wherein the collector terminals of each of the transistors of each of the at least one plurality of differential pairs of transistors are connected in parallel;
• a primary center tap in the series connection of the plurality of transformers;
• wherein the at least one voltage supply is connected to the primary center tap;
• wherein the at least one voltage supply supplies at least one first current to the cascode amplifier from the primary center tap;
• and
• a plurality of current sources providing a total CB transistor amplifier
• current;
• wherein each secondary center tap of the plurality of transformers is connected to one of the plurality of current sources;
• and wherein each secondary carries a fraction of the total CB transistor amplifier current.