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Switched reactance modulated E-class oscillator

  • US 7,005,935 B2
  • Filed: 03/19/2004
  • Issued: 02/28/2006
  • Est. Priority Date: 10/05/2001
  • Status: Expired due to Term
First Claim
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1. An E-Class oscillator configured to lock to an external reference signal comprising:

  • a tank circuit configured to oscillate;

    a first switching circuit configured to repeatedly add energy into the tank circuit in response to a drive signal to maintain the oscillation of the tank circuit;

    a second switching circuit configured to controllably alter the oscillation frequency of the tank circuit; and

    a controller configured to generate a control signal based on the external reference signal and based on the drive signal that causes the second switching circuit to repeatedly alter the oscillation frequency of the tank circuit in a manner that causes the oscillator to lock to the external reference signal.

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