Methods and apparatus for wideband and fast chirp generation for radar systems
AssigneeIntel Corporation
InventorsKailash Chandrashekar, Ashoke Ravi
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Abstract
Methods, apparatus, systems and articles of manufacture for wideband and fast chirp generation for radar systems are disclosed herein. An example apparatus includes a phase digital-to-analog converter to convert a digital input that specifies at least one of a phase modulation or a frequency modulation into an analog output, and to generate a phase modulated output centered on an intermediate frequency. The example apparatus also includes a frequency multiplier to frequency multiply the phase modulated output centered on the intermediate frequency by a multiplication factor to generate a chirp signal.
Claims25
A chirp generator to create chirp signals, the chirp generator comprising:
- a phase digital-to-analog converter (DAC) to convert a digital input that specifies at least one of a phase modulation or a frequency modulation into an analog output, the phase DAC to generate a phase modulated output centered on an intermediate frequency;
- and
- a frequency multiplier to frequency multiply the phase modulated output centered on the intermediate frequency by a multiplication factor to generate a chirp signal.
A system to create a chirp signal, the system comprising:
- first means for converting a digital input that specifies at least one of a phase modulation or a frequency modulation into an analog output, means for generating a phase modulated output centered on an intermediate frequency;
- and
- means for frequency multiplying the phase modulated output centered on the intermediate frequency by a multiplication factor to generate a chirp signal.
A method of generating chirp signals and receiving a first chirp signal, the method comprising:
- accessing a digital input representative of a phase modulation for a chirp signal;
- accessing a fixed reference frequency for a chirp signal;
- deriving a clock from a division of the fixed reference frequency by a value;
- synchronizing a clock in a phase DAC to the clock derived from the fixed reference frequency to provide a phase modulated output centered on an intermediate frequency;
- obtaining a bandwidth expansion for the first chirp signal from the phase modulated output that is frequency multiplied;
- and
- outputting the first chirp signal with the bandwidth expansion.
Dependencies are inferred from the claim text.