JPS57157605A - Calibration method of orthogonal synchronous wave detector - Google Patents

Calibration method of orthogonal synchronous wave detector

Info

Publication number
JPS57157605A
JPS57157605A JP56042734A JP4273481A JPS57157605A JP S57157605 A JPS57157605 A JP S57157605A JP 56042734 A JP56042734 A JP 56042734A JP 4273481 A JP4273481 A JP 4273481A JP S57157605 A JPS57157605 A JP S57157605A
Authority
JP
Japan
Prior art keywords
outputs
mixers
mode
calibration method
wave detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56042734A
Other languages
Japanese (ja)
Inventor
Shigeyuki Furushima
Takahiko Mibu
Hisashi Sawada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56042734A priority Critical patent/JPS57157605A/en
Publication of JPS57157605A publication Critical patent/JPS57157605A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To realize the calibration for the amplitude of two outputs, by swiching the local oscillating signals which are applied to two balanced mixers. CONSTITUTION:The input receiving signal is applied to balanced mixers 1 and 3, and the outputs of the mixers 1 and 3 are made to pass through low pass filters 2 and 4 to obtain two orthogonal outputs 8 and 9. The output of a local signal generator 6 is applied directly to one of the mixers 1 and 3 and applied to the other one via a 90 deg. phase shifter 5. A switch 10 switches the local oscillating signals to be applied to the mixers 1 and 3 to be connected to the N and C sides in the active mode and caliburation mode respectively. When the amplitude characteristics of outputs 8 and 9 are referred to as A and Adelta respectively, the outputs become Acosphi/2 and Adeltasinphi/2 in the active mode and Asinphi/2 and Adeltacosphi/2 in the calibration mode, respectively. Thus delta can be obtained from these output values.
JP56042734A 1981-03-24 1981-03-24 Calibration method of orthogonal synchronous wave detector Pending JPS57157605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56042734A JPS57157605A (en) 1981-03-24 1981-03-24 Calibration method of orthogonal synchronous wave detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56042734A JPS57157605A (en) 1981-03-24 1981-03-24 Calibration method of orthogonal synchronous wave detector

Publications (1)

Publication Number Publication Date
JPS57157605A true JPS57157605A (en) 1982-09-29

Family

ID=12644258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56042734A Pending JPS57157605A (en) 1981-03-24 1981-03-24 Calibration method of orthogonal synchronous wave detector

Country Status (1)

Country Link
JP (1) JPS57157605A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102411A1 (en) * 2007-02-20 2008-08-28 Fujitsu Limited Signal processing device and signal processing method
JP2013185945A (en) * 2012-03-07 2013-09-19 Furukawa Electric Co Ltd:The Radar device and adjustment method of radar device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102411A1 (en) * 2007-02-20 2008-08-28 Fujitsu Limited Signal processing device and signal processing method
JPWO2008102411A1 (en) * 2007-02-20 2010-05-27 富士通株式会社 Signal processing apparatus and method
JP2013185945A (en) * 2012-03-07 2013-09-19 Furukawa Electric Co Ltd:The Radar device and adjustment method of radar device

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