System and method for dividing the carrier center frequency of an RF modulated signal by a non-integer divisor
US10651876B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1974
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An example method according to some embodiments includes receiving, from a modulator, a phase-modulated carrier output signal having a carrier center frequency that is a non-integer multiple of a desired carrier center frequency; generating, by an injection-locked ring oscillator (ILRO), a plurality of phases of the phase-modulated carrier output signal at a plurality of outputs of the ILRO; generating a decoupled fractional frequency output signal by sequentially selecting, using a multiplexer, successive outputs of the plurality of outputs corresponding to successive phases of the plurality of phases, the decoupled fractional frequency output signal having a center frequency equal to an integer multiple of the desired carrier center frequency; and generating, based on the decoupled fractional frequency output signal, a desired phase-modulated carrier output signal that is decoupled from the modulator, the desired phase-modulated carrier output signal having a generated carrier center frequency equal to the desired carrier center frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.