Patent · US Active

System for coherent distribution of oscillator signal

US10680623B2 · kind B2 · utility

1Cited by
2References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 17, 2018
Grant dateJun 9, 2020
Priority date—
Expiry dateJun 7, 2038

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04B7/0413
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A local oscillator (LO) distribution system is described. The LO system includes a plurality of phase-locked loop (PLL) modules coupled to each other in a one-way, circulant coupling topology. Each PLL module receives a reference clock signal and outputs an output LO signal. Each PLL module provides a local LO signal to an adjacent downstream PLL module, where the local LO signal is a frequency divided version of the output LO signal. Each PLL module receives an adjacent LO signal from the adjacent upstream PLL module. The phase of the output LO signal is made to be coherent with the phase of the reference clock signal and the phase of the adjacent LO signal, using a feedback loop.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.