Crystal free radio

US10727886B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Kristofer S. J. Pister · Orinda, US
• Osama Khan · Berkeley, US
• Bradley Allen Wheeler · Martinsville, US
• David C. Burnett · Berkeley, US

Key dates

• Filing date: May 8, 2017
• Grant date: Jul 28, 2020
• Expiry date: May 8, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/38
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A crystal-free radio includes an antenna; a receiver configured to communicate with the antenna; a local radio frequency (RF) oscillator configured to communicate with the receiver; and a clock circuit configured to communicate with the receiver and the local RF oscillator, the clock circuit having an electronic circuit oscillator. The local RF oscillator is a free-running oscillator. The clock circuit is configured to receive a calibration signal via a wireless network and calibrate the electronic circuit oscillator based on the received calibration signal, and the clock circuit is a crystal-free clock circuit.