Abstract: A distributed power amplifier may include a plurality of switching power amplifier sub-circuits, and a plurality of connection network sub-circuits, each of the plurality connection network sub-circuits having a characteristic impedance, wherein each of the plurality of connection network sub-circuits combines two or more of the plurality of switching power amplifier sub-circuits into a parallel or series configuration, wherein the plurality of switching power amplifier sub-circuits, the plurality of connection network sub-circuits and the characteristic impedance of each of the plurality of connection network sub-circuits are configured to present each of the plurality of switching power amplifier sub-circuits with a substantially equivalent load impedance.

Abstract: A power digital to analog converter may include a course-resolution digital to analog converter for converting a first segment of binary digits into a first analog output having a first voltage. The power digital to analog converter may also include a fine-resolution digital to analog converter connected in series with the course-resolution digital to analog converter. The fine-resolution digital to analog converter may be configured for converting a second segment of binary digits into a second analog output having a second voltage. The first voltage and the second voltage may be added together to produce an analog output signal representing the binary digits.