Patent ID: 11929720
Assignee: QORVO US, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The envelope power supply circuitry of claim 10 wherein the delay estimation circuitry further comprises:
additional programmable delay circuitry configured to delay the second signal by an amount determined by an additional delay control signal;
additional comparator circuitry coupled to the additional programmable delay circuitry and configured to:
detect when a magnitude of the second signal from the additional programmable delay circuitry crosses an additional threshold value; and
provide an additional measurement indicator signal in response to the magnitude of the second signal crossing the additional threshold value;

additional sample and hold circuitry coupled to the additional comparator circuitry and configured to sample and hold a magnitude of the first signal in response to the additional measurement indicator signal;
additional difference calculation circuitry configured to:
calculate a difference between subsequent measurements of the magnitude of the first signal; and
provide an additional difference signal based on the difference; and

wherein the delay control circuitry is further coupled to the additional difference calculation circuitry and further configured to:
calculate the delay between the first signal and the second signal based on changes in the difference signal and the additional difference signal over time; and
provide the additional delay control signal based on changes in the additional difference signal over time.