A surface acoustic wave driving circuit and oscillator therefor

Details A surface acoustic wave driving circuit and oscillator therefor A surface acoustic wave driving circuit and oscillator therefor

H - Electricity

03

B

H03B 5/32 (2006.01)

Patent

CA 2707508

A driving circuit of a surface wave resonator (X1) is described; the resonator comprises a static capacitor (Co) and the driving circuit is adapted to supply a voltage (Vx) to the resonator. The driving circuit comprises reactive means (L3) adapted to resonate in combination with said static capacitor (Co) of the resonator at a predetermined frequency (Fo) in the initial driving period of the resonator at said voltage; the driving circuit comprises passive means (R3) adapted to determine oscillations at said predetermined frequency (Fo).

L'invention concerne un circuit de commande d'un résonateur à ondes de surface (X1). Le résonateur comprend un condensateur statique (Co) et le circuit de commande est adapté pour fournir une tension (Vx) au résonateur. Le circuit de commande comprend des moyens réactifs (L3) adaptés pour résonner en combinaison avec ledit condensateur statique (Co) du résonateur à une fréquence prédéterminée (Fo) dans la période de commande initiale du résonateur à ladite tension. Le circuit de commande comprend des moyens passifs (R3) adaptés pour déterminer les oscillations à ladite fréquence prédéterminée (Fo).

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