Multiplexed chirp waveform synthesizer
AssigneeSandia Corporation
InventorsPeter A. Dudley, Bert L. Tise
Life of this patent
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Abstract
A synthesizer for generating a desired chirp signal has M parallel channels, where M is an integer greater than 1, each channel including a chirp waveform synthesizer generating at an output a portion of a digital representation of the desired chirp signal; and a multiplexer for multiplexing the M outputs to create a digital representation of the desired chirp signal. Preferably, each channel receives input information that is a function of information representing the desired chirp signal.
Claims18
A multiplexed waveform synthesizer for generating a desired chirp signal comprising:
- M parallel channels, where M=2k where k is a positive integer greater than 1, each channel comprising a chirp waveform synthesizer generating at an output a portion of a digital representation of the desired chirp signal;
- and
- multiplexer means for multiplexing the M outputs to create a digital representation of the desired chirp signal.
A multiplexed waveform synthesizer for generating a desired chirp signal comprising:
- M parallel channels, where M is an integer greater than 1, wherein each channel is a double accumulator chirp synthesizer for generating a portion of a digital representation of the desired chirp signal and comprises:
- a frequency accumulator for generating an output representative of a desired frequency range;
- a phase accumulator in series with said frequency accumulator for generating an instantaneous phase output representative of a desired waveform;
- and
- a mapping device for transforming the output of said phase accumulator to a digital function of a sine wave at the frequency of said frequency accumulator, each said mapping device having an output;
- multiplexer means for multiplexing the M outputs of said mapping devices to create a digital representation of the desired chirp signal;
- and
- an initializor for receiving inputs representative of the desired chirp signal, said initializor having output means for providing input information to each of said chirp waveform synthesizers.
Dependencies are inferred from the claim text.