Generation of digital clock for system having RF circuitry

USRE49526E1 · kind E1 · reissue

Assignee

• Huawei Technologies Co., Ltd. · CN

Inventors

• Patrick Vandenameele · Oud-Heverlee, BE
• Norman Beamish · Munich, DE

Key dates

• Filing date: Dec 16, 2020
• Grant date: May 9, 2023
• Expiry date: Dec 16, 2040

Classification

• Technology area (CPC —): General

Abstract

Circuitry for any of a transceiver, a transmitter, and a receiver, has radio frequency (RF) circuitry, digital circuitry, a carrier signal generator to provide a carrier signal to the RF circuitry and a clock generator for generating a digital clock for clocking at least some of the digital circuitry. The RF circuitry is susceptible to interference from harmonics of the clocking, and the clock generator derives a frequency of the digital clock based on a frequency divided down from a frequency of the carrier signal so that the interference to the RF circuitry occurs at frequencies which are harmonics of the carrier signal.