Radar system installable in an automotive vehicle for detecting a target object
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United States of America Patent
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Mar 21, 2000
Grant Date -
N/A
app pub date -
Mar 17, 1998
filing date -
Mar 18, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A modulation signal generating section produces a modulation signal for controlling an oscillation frequency of a voltage-controlled oscillator. The modulation signal generating section comprises a triangular wave oscillator producing a linear modulation component of a triangular waveform which varies the modulation frequency linearly, a sine wave oscillator producing a cyclic modulation component of a sine waveform which varies the modulation frequency cyclically, and a signal adder producing the modulation signal by adding the linear modulation component and the cyclic modulation component. A transmitting signal frequency modulated by the modulation signal is mixed with a received signal and produces a beat signal comprising a fundamental wave component of a beat frequency and harmonic components.
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