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:
Dec. 12, 2017
Filed:
Mar. 05, 2015
Nordic Semiconductor Asa, Trondheim, NO;
Stein Erik Weberg, Trondheim, NO;
Ola Bruset, Trondheim, NO;
Nordic Semiconductor ASA, Trondheim, NO;
Abstract
A phase locked loop frequency synthesizer is arranged to provide a target frequency output signal for a radio transmitter or receiver. The synthesizer comprises: a voltage controlled oscillator () operating at a first frequency; a first, fixed frequency divider to provide a second frequency, a pre-scaler to provide a variable frequency division of said second frequency to produce a third frequency, said pre-scaler comprising: a second frequency divider () connected to said first output () and providing a second output at a second frequency; and a phase detector () controlling said voltage controlled oscillator () on the basis of a comparison between a reference signal and a signal dependent on said third frequency; wherein the synthesizer is configured so that said first output () provides said target frequency output signal.