CONTROLLED DIGITAL AMPLIFIER USING DIRECT AND FEEDBACK

摘要

1. A digital amplifier for providing the required electrical output power, the amplifier comprising a power source (100) for generating electrical output power, the amplifier further comprising:! a digital input configured to receive a digital input signal (112), the digital input signal (112) characterizing the required level of electrical output power,! a reference power generator (124) for generating an analog reference power controlled by a digital input signal (112),! power measuring element (142; 128), configured to measure a power difference between the electric output power provided by the power source (100) and the analog reference power,! analog-to-digital Converter (130), configured to convert the power difference into a digital value (132) power difference,! a combining device configured to provide a combined digital signal (136) by adding a digital value (132) of the power difference to a digital value input to the reference power generator (124) to generate an analog reference power, the power source (100) being configured to provide electric power, adjusted for the difference between the power determined by the digital input signal (112) and the combined digital signal (136). ! 2. The digital amplifier according to claim 1, further comprising a direct communication controller (120) configured to digitally control the reference power generator (124) by emulating the characteristics of generating output power and�