Radar device
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United States of America Patent
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-
Jan 16, 2024
Grant Date -
N/A
app pub date -
Jun 29, 2021
filing date -
Jul 22, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radar device includes a transmit antenna radiating a modulation signal and a receive antenna receiving reflection waves from the modulation signal. The radar device also includes a mixer mixing the modulation signal and the received signal to output a beat signal, a calculation circuit judging presence or absence of an abnormality by using the beat signal, and a memory storing reference data and a threshold. The reference data indicates a phase component of a set frequency signal from a beat signal without necessarily any abnormality. The set frequency signal is generated from the modulation signal reflected on a surface of a housing located at a set distance from the radar device. The calculation circuit extracts a phase component from the beat signal and supplies information indicating the presence of an abnormality if the difference between the extracted phase component and the reference data is greater than the threshold.
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