07791415 is referenced by 10 patents and cites 11 patents.

A fractional-N synthesized chirp generator includes a fractional-N synthesizer and a digital ramp synthesizer. The fractional-N synthesizer has a frequency synthesizer and a sigma-delta modulator module. The fractional-N synthesizer is configured to receive a reference frequency input signal and a frequency control value. The fractional-N synthesizer is configured to transform the reference frequency signal and the frequency control value to a chirped radio frequency (RF) output signal in a deterministic manner. The digital ramp synthesizer is configured to receive the reference frequency input signal and configured to generate the frequency control value utilizing the reference frequency input signal. The digital ramp synthesizer is further configured to provide the frequency control value to the fractional-N synthesizer. The frequency control value varies with time.

Title
Fractional-N synthesized chirp generator
Application Number
12/122635
Publication Number
7791415 (B2)
Application Date
May 16, 2008
Publication Date
September 7, 2010
Inventor
Craig A Hornbuckle
Torrance
CA, US
Agent
McDermott Will & Emery
Assignee
Semtech Corporation
CA, US
IPC
H03L 7/089
H03L 7/085
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