Frequency shift key modulating oscillator
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United States of America Patent
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Nov 13, 2001
Grant Date -
Sep 20, 2001
app pub date -
Apr 16, 2001
filing date -
Dec 1, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention teaches a system for selectably oscillating at a first or a second oscillating frequency. The system comprises an oscillator for providing an oscillating output. Moreover, the system comprises a switching device for selecting a first or a second impedance in response to a select signal having a voltage. Each of the first and second impedances are fixed independently of the select signal voltage such that the oscillating output oscillates at the first oscillating frequency when the first impedance is provided and oscillates at the second oscillating frequency when the second impedance is provided.
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