The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
Apr. 17, 2018
Andrei Buliga, Ottawa, CA;
Andrei Buliga, Ottawa, CA;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
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.