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Title:
ELECTRONIC CIRCUIT, RADAR DEVICE AND SELF-DIAGNOSIS METHOD OF RADAR DEVICE
Document Type and Number:
Japanese Patent JP2014169866
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic circuit that allows an efficient circuit configuration to execute a self-diagnosis of an FMCW signal in a radar device.SOLUTION: The electronic circuit includes: a first PLL circuit that includes a first frequency divider in which a frequency dividing ratio is variably controlled; a second frequency divider that frequency divides an input signal to the first frequency divider; a delay circuit that delays an output of the second frequency divider; a second PLL circuit that uses an output signal of the delay circuit as a reference signal; and a mixer circuit that takes an oscillation signal of the first PLL circuit and an oscillation signal of the second PLL circuit as an input.

Inventors:
MATSUMURA HIROSHI
Application Number:
JP2013040363A
Publication Date:
September 18, 2014
Filing Date:
March 01, 2013
Export Citation:
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Assignee:
FUJITSU LTD
International Classes:
G01S7/40; G01S13/34
Domestic Patent References:
JPH09246967A1997-09-19
JP2012198070A2012-10-18
JP2011242199A2011-12-01
JP2000353953A2000-12-19
JPH10107677A1998-04-24
JPH1010227A1998-01-16
JP2008298736A2008-12-11
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Yamaguchi Akinori