HK1001175A1 - Microwave doppler module - Google Patents

Microwave doppler module

Info

Publication number
HK1001175A1
HK1001175A1 HK98100234A HK98100234A HK1001175A1 HK 1001175 A1 HK1001175 A1 HK 1001175A1 HK 98100234 A HK98100234 A HK 98100234A HK 98100234 A HK98100234 A HK 98100234A HK 1001175 A1 HK1001175 A1 HK 1001175A1
Authority
HK
Hong Kong
Prior art keywords
frequency
signals
waveguide
diodes
microwave doppler
Prior art date
Application number
HK98100234A
Inventor
Richard Schubert
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of HK1001175A1 publication Critical patent/HK1001175A1/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50Systems of measurement based on relative movement of target
    • G01S13/58Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/62Sense-of-movement determination
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06Transference of modulation using distributed inductance and capacitance
    • H03D9/0608Transference of modulation using distributed inductance and capacitance by means of diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

A doppler sensor with a frequency generator (1) with a transmission and reception unit (2) connected thereto via a waveguide (12) and with two diodes (D1, D2) acting as mixer which receive the signals in the waveguide (12) at intervals of an eighth of a wavelength, so that, when these signals are not linearly superimposed, signals phase-shifted through 90 DEG are obtained at the outputs of the diodes (D1, D2) from which, by differentiation in a differentiator (4), is obtained a sufficiently low-noise signal which contains the difference between the frequency generated by the frequency generator (1) and the doppler-shift frequency of the reflected and received signal as an intermediate frequency, from which the amount of the relative speed to be measured is determined in an evaluation unit (5).
HK98100234A 1992-11-10 1998-01-12 Microwave doppler module HK1001175A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4237908 1992-11-10
PCT/DE1993/001018 WO1994011755A1 (en) 1992-11-10 1993-10-26 Microwave doppler module

Publications (1)

Publication Number Publication Date
HK1001175A1 true HK1001175A1 (en) 1998-05-29

Family

ID=6472518

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98100234A HK1001175A1 (en) 1992-11-10 1998-01-12 Microwave doppler module

Country Status (8)

Country Link
EP (1) EP0669005B1 (en)
AT (1) ATE152247T1 (en)
DE (1) DE59306291D1 (en)
DK (1) DK0669005T3 (en)
ES (1) ES2101348T3 (en)
GR (1) GR3023955T3 (en)
HK (1) HK1001175A1 (en)
WO (1) WO1994011755A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2146428T3 (en) 2008-07-17 2011-11-30 Bea Sa Mixer structure for Doppler radar applications
US8378879B2 (en) 2009-06-18 2013-02-19 The Johns Hopkins University Apparatus and methods for remote detection of physiological changes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5686375A (en) * 1979-12-14 1981-07-14 Mitsubishi Electric Corp Doppler radar capable of discrimination of direction
US4499467A (en) * 1982-04-14 1985-02-12 The United States Of America As Represented By The Secretary Of The Army Doppler radar sets with target direction sensing capability
IT1223930B (en) * 1988-11-23 1990-09-29 Elkron Spa DEVICE FOR DETECTING RELATIVE MOVEMENTS BETWEEN VEHICLES MAINLY IN ANTI-COLLISION FUNCTION

Also Published As

Publication number Publication date
DK0669005T3 (en) 1997-10-20
DE59306291D1 (en) 1997-05-28
EP0669005B1 (en) 1997-04-23
ATE152247T1 (en) 1997-05-15
ES2101348T3 (en) 1997-07-01
GR3023955T3 (en) 1997-09-30
WO1994011755A1 (en) 1994-05-26
EP0669005A1 (en) 1995-08-30

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)