US Patent 7705686 Injection-locked frequency divider
Patent 7705686 was granted and assigned to National Taiwan University of Science and Technology on April, 2010 by the United States Patent and Trademark Office.
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An injection-locked frequency divider includes a ring oscillator, a signal injection circuit, a first adjustable load circuit and a second adjustable load circuit. The ring oscillator generates an oscillation signal according to a differential signal outputted by the signal injection circuit. According to an adjustable voltage, the first and second adjustable load circuits can respectively change equivalent impedances of the first adjustable load circuit and the second adjustable load circuit so that a free-running frequency of the oscillation signal of the ring oscillator is adjusted and an injection-locked frequency range of the injection-locked frequency divider is expanded.
US Patent 07705686 Injection-locked frequency divider US Patent 7705686 Injection-locked frequency divider
US Patent 07705686 Injection-locked frequency divider
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