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Current Division Based Delay Cell for Wide Frequency Range Voltage Controlled Oscillators

IP.com Disclosure Number: IPCOM000012806D
Original Publication Date: 2003-May-28
Included in the Prior Art Database: 2003-May-28

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Guilebaldo Gutiérrez Chávez Sergio A. Solís Bustos Jesús L. Finol


This paper deals with a differential delay cell based on the current division principle used for the implementation of a wide frequency range voltage controlled ring-oscillator. The frequency range is adjusted by controlling both the current flowing through the delay cell output and by the amount of delay cells used in the voltage controlled ring-oscillator.