Patent Number: 6,297,706

Title: Single stage voltage controlled ring oscillator

Abstract: A single stage voltage controlled ring oscillator includes a trans-admittance voltage-to-current circuit coupled to a trans-impedance voltage-to-current circuit. The output of the trans-impedance circuit is connected to the input of the trans-admittance circuit. The trans-admittance and trans-impedance circuit are preferably conjugately matched and may be coupled to each other via one or more transmission lines, the length of which can be selected to set a desired nominal oscillation frequency. The trans-impedance and trans-admittance circuits may also include voltage-controllable components which can be adjusted to tune the oscillation frequency.

Inventors: Pullela; Rajasekhar (North Plainfield, NJ)

Assignee: Lucent Technologies Inc.

International Classification: H03K 3/0231 (20060101); H03K 3/00 (20060101); H03B 005/02 ()

Expiration Date: 10/02/2018