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:
Assignee:
FUJITSU LTD
International Classes:
G01S7/40; G01S13/34; G01S13/931
Domestic Patent References:
| JPH09246967A | 1997-09-19 | |||
| JP2012198070A | 2012-10-18 | |||
| JP2011242199A | 2011-12-01 | |||
| JP2000353953A | 2000-12-19 | |||
| JPH10107677A | 1998-04-24 | |||
| JPH1010227A | 1998-01-16 | |||
| JP2008298736A | 2008-12-11 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Yamaguchi Akinori
Tadahiko Ito
Yamaguchi Akinori