公开(公告)号：US20240275365A1

公开(公告)日：2024-08-15

申请号：US18429939

申请日：2024-02-01

Applicant: NXP B.V.

Inventor： Gijsbert Willem Hardeman ,  Robert Rutten ,  Evert-Jan Daniel Pol ,  Qilong Liu ,  Shagun Bajoria ,  Lucien Johannes Breems

IPC: H03H17/02 ,  H03H17/00 ,  H03H17/06

CPC classification number: H03H17/0294 ,  H03H17/0621 ,  H03H2017/0081

Abstract: A detector device for calibrating a digital filter to replicate a transfer function of a signal processing apparatus, comprising: a first input to receive a first signal; a second input configured to receive a response signal of the signal processing apparatus to the first signal; a controllable FIR filter; a comparison-block to compare the phase and amplitude after a correction has been applied by the controllable FIR filter; a feedback loop; and an interpolation-block; wherein the at least one detector is configured to determine, at least, the feedback control signal at a first frequency and at a second frequency, and wherein the interpolation-block is configured to interpolate to determine calibration information for programming of the transfer function of said digital filter.