公开(公告)号：US20240264210A1

公开(公告)日：2024-08-08

申请号：US18107383

申请日：2023-02-08

Applicant: Apple Inc.

Inventor： Ankit Srivastava ,  David M. Signoff

IPC: G01R21/133 ,  G04F10/00 ,  H04B17/00

CPC classification number: G01R21/133 ,  G04F10/005 ,  H04B17/00

Abstract: A power detector includes a first current mirror that receives an input signal and generates a mirrored input signal, a first oscillator that reverses a first current of the mirrored input signal based on a voltage of the mirrored input signal reaching a threshold, and a first counter that generates a first count of each period generated by the first oscillator. The power detector also includes a second current mirror that receives a reference signal and generates a mirrored reference signal, a second oscillator that reverses a second current of the mirrored reference signal based on a voltage of the mirrored reference signal reaching the threshold, and a second counter that generates a second count of each period generated by the second oscillator. A processor then determine the power of the input signal based on the first count and the second count.