HK1001175A1 - Microwave doppler module - Google Patents
Microwave doppler moduleInfo
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S13/00—Systems 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S13/62—Sense-of-movement determination
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/06—Transference of modulation using distributed inductance and capacitance
- H03D9/0608—Transference 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).
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)
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)
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 |
-
1993
- 1993-10-26 DE DE59306291T patent/DE59306291D1/en not_active Expired - Fee Related
- 1993-10-26 DK DK93923442.3T patent/DK0669005T3/en active
- 1993-10-26 AT AT93923442T patent/ATE152247T1/en not_active IP Right Cessation
- 1993-10-26 ES ES93923442T patent/ES2101348T3/en not_active Expired - Lifetime
- 1993-10-26 EP EP93923442A patent/EP0669005B1/en not_active Expired - Lifetime
- 1993-10-26 WO PCT/DE1993/001018 patent/WO1994011755A1/en active IP Right Grant
-
1997
- 1997-06-30 GR GR970401605T patent/GR3023955T3/en unknown
-
1998
- 1998-01-12 HK HK98100234A patent/HK1001175A1/en not_active IP Right Cessation
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) |