公开(公告)号：US20230055562A1

公开(公告)日：2023-02-23

申请号：US17404930

申请日：2021-08-17

Applicant: Apple Inc.

Inventor： Damir Hamidovic ,  Harald Pretl ,  Peter Leopold Preyler

IPC: H04L27/38 ,  H04L27/16 ,  H04L27/26

Abstract: Multiphase signal generation circuitry receives input signals that are out-of-phase with one another by a quadrature delay (e.g., 90°), and generates output signals that are out-of-phase with one another by half of the quadrature delay. A first input signal may be provided to a first delay circuitry, which is then input to a first phase interpolator. The first delay circuitry is also input to second delay circuitry, which also generates an output that is input to the first phase interpolator. The first phase interpolator outputs a first output signal. The second delay circuitry is input to third delay circuitry, which in turn is input to a second phase interpolator with a second input signal that is out-of-phase with the first input signal by the quadrature delay. The second phase interpolator outputs a second output signal that is out-of-phase with the first output signal by the half of the quadrature delay.

公开(公告)号：US11570033B1

公开(公告)日：2023-01-31

申请号：US17404930

申请日：2021-08-17

Applicant: Apple Inc.

Inventor： Damir Hamidovic ,  Harald Pretl ,  Peter Leopold Preyler

IPC: H04L27/16 ,  H04L27/38 ,  H04L27/26 ,  H04L27/00

Abstract: Multiphase signal generation circuitry receives input signals that are out-of-phase with one another by a quadrature delay (e.g., 90°), and generates output signals that are out-of-phase with one another by half of the quadrature delay. A first input signal may be provided to a first delay circuitry, which is then input to a first phase interpolator. The first delay circuitry is also input to second delay circuitry, which also generates an output that is input to the first phase interpolator. The first phase interpolator outputs a first output signal. The second delay circuitry is input to third delay circuitry, which in turn is input to a second phase interpolator with a second input signal that is out-of-phase with the first input signal by the quadrature delay. The second phase interpolator outputs a second output signal that is out-of-phase with the first output signal by the half of the quadrature delay.