Apparatus for linearization of digitally controlled oscillator

Details Apparatus for linearization of digitally controlled oscillator Apparatus for linearization of digitally controlled oscillator

2011-03-22

2011-03-22

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C331S00100A

Reexamination Certificate

active

07911248

ABSTRACT:
There is provided an apparatus for the linearization of a digitally controlled oscillator. The apparatus includes a first filter outputting only a low frequency band signal of an input signal to the digitally controlled oscillator; a negative feedback loop causing the signal of an input port of the digitally controlled oscillator to pass through a frequency table and a frequency-to-digital code mapper in sequence and correcting an input of the digitally controlled oscillator by performing negative feedback to an input port of the first filter; and a frequency table generator storing a frequency value of an output signal of the digitally controlled oscillator in the frequency table.

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Robert B. Staszewski et al., “Just-In-Time Gain Estimation of an RF Digitally-Controlled Oscillator,” CICC(IEEE 2003 Custom Integrated Circuits Conference), Feb. 2003, pp. 571-574, vol. 25, No. 8.

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