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:
Oct. 11, 2011
Filed:
Nov. 08, 2006
Jarmo Heinonen, Salo, FI;
Vesa Viitaniemi, Toija, FI;
Kai Leino, Salo, FI;
Jyrki Koljonen, Salo, FI;
Jarmo Heinonen, Salo, FI;
Vesa Viitaniemi, Toija, FI;
Kai Leino, Salo, FI;
Jyrki Koljonen, Salo, FI;
Nokia Corporation, Espoo, FI;
Abstract
Disclosed is an oscillator circuit () for use in a local oscillator of an RF communications device () that communicates over an RF channel. The oscillator circuit includes an oscillator transistor coupled to a power supply voltage (Vcc) through a buffer transistor, and a biasing network having bias voltage outputs coupled to a control input of the oscillator transistor and to a control input of the buffer transistor. In one embodiment the bias voltage network is coupled to Vcc, while in another embodiment the bias voltage network is coupled to a separate voltage (Vbias). Circuitry is provided for setting a magnitude of Vcc and/or Vbias as a function of at least one of RF channel conditions, such as channels conditions determined from a calculation of the (SNR), or an operational mode of the RF communications device.