Patent ID: 11909358
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A system comprising:
a first amplifier, wherein the first amplifier comprises an RF amplifier, configured to receive a RF signal at an RF input thereof;
a multi-level power supply;
a first modulator coupled to the multi-level power supply and configured to provide a first modulated power supply output signal;
a second modulator coupled to the multi-level power supply and configured to provide a second modulated power supply output signal;
a combiner circuit coupled to the first and second modulators to receive the first and second modulated power supply output signals, the combiner circuit configured to combine the first and second modulated power supply output signals into a combined power supply output signal;
a second amplifier having a supply terminal coupled to receive the combined power supply output signal;
a delay circuit coupled to one of the first and second modulators to provide a relative delay between the power supply output signal provided by the first modulator and the power supply output signal provided by the second modulator;
a transition detect circuit to detect the direction of an impending power transition; and
a lookahead delay circuit configured to set a value of the time delay based on the impending power transition.