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US 2006/0066473 A1Published application
Pulse wave radar device
AssigneeTDK Corporation
InventorsTakeshi Yokoyama, Hitoyoshi Kurata, Tomohiro Honya, Yoshinari Yamashita
Life of this patent
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Abstract
To achieve a purpose of accurately detecting a distance to a target even in a close range, a pulse wave radar device according to the present invention cuts off an output of a demodulation circuit so that no of receiving pulse may be detected, during a period when a transmitting pulse wave output from a transmitting antenna or a transmitting pulse output from a pulse generation circuit is leaking to a receiving antenna or a receiving circuit.
Claims10
A pulse wave radar device comprising:
- a transmitting circuit for periodically sending a transmitting pulse wave obtained by modulating a transmitting pulse;
- a transmitting antenna for transmitting the transmitting pulse wave from the transmitting circuit;
- a receiving antenna for receiving a receiving pulse wave reflected from a target;
- a demodulation circuit for demodulating a receiving pulse wave from the receiving antenna;
- and
- a cutoff circuit for temporarily shifting an output of the demodulation circuit from a conductive state to a cutoff state,
- wherein the cutoff circuit cuts off the output of the demodulation circuit during a time when the transmitting pulse or the transmitting pulse wave is leaking in the pulse wave radar device.
4 more elements
A pulse wave radar device comprising:
- a transmitting circuit for periodically sending a transmitting pulse wave obtained by modulating a transmitting pulse;
- a transmitting antenna for transmitting the transmitting pulse wave from the transmitting circuit;
- a receiving antenna for receiving a receiving pulse wave reflected from a target;
- a demodulation circuit for demodulating a receiving pulse wave from the receiving antenna;
- and
- a cutoff circuit for temporarily shifting of an output of the demodulation circuit from a conductive state to a cutoff state,
- wherein the cutoff circuit cuts off the output of the demodulation circuit until a timing which corresponds to a minimum detectable distance.
4 more elements
Dependencies are inferred from the claim text.