Apparatus and tuning method for a voltage controlled oscillator

Details Apparatus and tuning method for a voltage controlled oscillator Apparatus and tuning method for a voltage controlled oscillator

H - Electricity

03

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H03L 7/24 (2006.01) H03B 5/14 (2006.01) H03B 5/18 (2006.01) H03B 5/20 (2006.01) H03J 7/08 (2006.01) H03L 7/099 (2006.01) H03L 7/18 (2006.01) H04B 1/16 (2006.01)

Patent

CA 2238741

A method (500) of tuning a voltage controlled oscillator (VCO) includes the steps of initializing a programmable voltage and applying the programmable voltage to the VCO in order to tune the VCO (502). A control voltage is applied to the VCO to lock the VCO, and the VCO is checked to determine if it is in a locked condition. (504). If the VCO is in a locked condition, the control voltage is measured and compared to a predetermined voltage range (506). If an unlocked condition is detected or if the control voltage does not fall within the predetermined voltage range then the programmable voltage is adjusted (512) and the steps are repeated until the VCO is locked with a control voltage which falls within a predetermined voltage range.

Méthode (500) d'accord d'un oscillateur commandé par tension (VCO). Comprend les étapes suivantes, soit l'initialisation d'une tension programmable et application de cette tension au VCO (502) afin de l'accorder. Une tension de commande est appliquée au VCO pour le verrouiller, et une vérification est faite pour s'assurer que le VCO est à l'état verrouillé. (504). Si le VCO est à l'état verrouillé, la tension de commande est mesurée et comparée à une plage de tension prédéterminée (506). Si un état non verrouillé est détecté ou si la tension de commande ne se situe pas dans la plage de tension prédéterminée, la tension programmable est réglée (512) et les étapes sont répétées jusqu'à ce que le VCO soit verrouillé par une tension de commande comprise dans une plage de tension prédéterminée.

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