Patent 7271671 was granted and assigned to Nokia on September, 2007 by the United States Patent and Trademark Office.
A crystal is loaded with capacitance in such a way that it begins to oscillate at a desired frequency with a resonance circuit (2). Capacitive voltage division is carried out with a voltage divider to at least one terminal (3) of the crystal (1). From the voltage divider, the signal of the crystal (1) is supplied to a second circuit (7).