GB2328748A - Collision avoidance system with sensors mounted on flexible p.c.b. - Google Patents

Collision avoidance system with sensors mounted on flexible p.c.b. Download PDF

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Publication number
GB2328748A
GB2328748A GB9718364A GB9718364A GB2328748A GB 2328748 A GB2328748 A GB 2328748A GB 9718364 A GB9718364 A GB 9718364A GB 9718364 A GB9718364 A GB 9718364A GB 2328748 A GB2328748 A GB 2328748A
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GB
United Kingdom
Prior art keywords
sensor
sensor assembly
vehicle
antenna
circuit board
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.)
Granted
Application number
GB9718364A
Other versions
GB9718364D0 (en
GB2328748B (en
Inventor
Graeme Peter Smith
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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Priority to GB9718364A priority Critical patent/GB2328748B/en
Publication of GB9718364D0 publication Critical patent/GB9718364D0/en
Publication of GB2328748A publication Critical patent/GB2328748A/en
Application granted granted Critical
Publication of GB2328748B publication Critical patent/GB2328748B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/005—Antennas or antenna systems providing at least two radiating patterns providing two patterns of opposite direction; back to back antennas
    • 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/2813—Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93271—Sensor installation details in the front of the vehicles
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93272—Sensor installation details in the back of the vehicles
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93274—Sensor installation details on the side of the vehicles
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93275—Sensor installation details in the bumper area
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A sensor assembly for a collision warning system 3 for a motor vehicle 5 comprising four sensor assemblies 13,15,17,19, each consisting of a flexible printed circuit board 7 (Fig.2, not shown) having printed upon it sensor electronics, the arrangement whereby the flexible printed circuit board 7 may be mounted on the inside of the vehicle bumper 11.

Description

MPROVEMENTS IN SENSOR ASSLIIS FOR AUTOMOTIVE COLLISION waRNING SYSTENS Field of the Invention The invention relates to an improved sensor assembly for a collision warning system for a motor vehicle.
Various different types of collision warning systems have been proposed for motor vehicles which will warn of potential collision with moving targets, primarily other vehicles, and stationary obstacles especially when parking.
Such systems include 'closing vehicle same lane warning systems' for looking behind a vehicle when it is travelling forwards for noting when a vehicle is approaching from the rear, parking aids for looking forwards when the vehicle is travelling slowly forwards and backwards when the vehicle is travelling slowly backwards, backup aids, short range frontal collision warning systems for looking ahead of the vehicle while driving forwards, parking space measuring aids for measuring the length of a parallel parking space to the side of the vehicle, driver induced impaired visibility aids to help ensure that the driver can notice vehicles approaching his side in an overtaking lane, side vision aids for looking to the side of the vehicle and lane change aids for checking that the driver is free to overtake, or indeed move to an inside lane.
Collision warning systems have been developed for motor vehicles which utilise sensor assemblies including transmit and receive antennas for scanning the area around a vehicle.
Many such systems require a view of 360 degrees around the vehicle especially when the system is a multifunctional system capable of operating in a number of modes of collision warning.
Typically sensors are mounted at or about the corner of the vehicle, conveniently in the region of the bumper. However this results in the sensor assembly being mounted in a vulnerable area since even in a low speed impact the bumper is susceptible to damage. In many vehicles the bumper is arranged to conform to absorb such impacts.
The styling of a vehicle can make the choice of position for mounting a sensor assembly difficult. Moreover designs of bumpers vary widely over the front designs of cars and it can be difficult to design a sensor assembly which can be conveniently mounted in this region for all vehicles.
Summary of the Invention According to the invention there is provided a sensor assembly for a collision warning system for a motor vehicle comprising a flexible printed circuit board having printed upon it sensor electronics, the arrangement whereby the flexible printed circuit board may be mounted on the inside of the vehicle bumper.
The advantage of the flexible printed circuit board is that the sensor assembly may be easily packaged within the bumper at any corner of the vehicle without compromise to either bumper or sensor performance and without impact on vehicle styling. Because the sensor assembly is flexible it will have some crash impact survival characteristics. The flexible sensor assembly will be usable on different designs of bumper which will allow the design to be re-used in many vehicles with different bumper and styling line designs.
Preferably the flexible substrate for the circuit board is polyester which is cheap and flexible. However polyamide may be used as the substrate material where high accuracy and stability are required.
Preferably the flexible substrate includes an adhesive layer to allow the sensor to be adhered to the inside of the bumper. This results in better styling in contrast with other invasive sensor assemblies which require holes in the bumper and/or chassis.
Although flexible PCB's are well established and have been used in automotive applications including substrates for the electronics behind dashboards they have not hitherto been proposed for use in collision warning systems.
The sensors of the sensor assembly may be of any type suitable for use in a collision warning system including radar and ultrasonic.
Preferably the sensor assembly comprises an antenna cluster arranged substantially in accordance with the applicant's co-pending application filed on the same date.
Such an antenna cluster comprises a radar transmit antenna and two receive antennas, the transmit antenna mounted between the receive antennas, a first receive antenna facing towards the front of the vehicle and a second receive antenna facing towards the rear of the vehicle. The collision warning system includes means to trigger the operation of the transmit antenna and one or both of the receive antennas.
This antenna arrangement is particularly efficient if the vehicle includes a collision warning system which includes four such antenna clusters, one mounted at each corner of the vehicle.
Preferably the electronics of the sensor assembly are mounted near the centre of the flexible PCB with external connections from the electronics module. For flexibility near the centre preferably the sensor assembly is mounted on the bumper such that between the parts of the substrate which are adhered to the bumper and the parts which are connected to the more rigid electronics, there is excess flexible material.
Preferably the antenna cluster comprises a cluster of impulse radar antennas. Impulse radar is a broadband radar frequency which operates by radiating short radio frequency pulses without a carrier wave. The spectrum of the radiated signal is very broad. By virtue of transmitting only a short pulse, the reflection from a target arrives after a short delay corresponding to the distance from the target. Such signals can then be interpreted to identify obstacles in areas of interest.
Preferably the sensor assembly includes at least one antenna in the form of a Vivaldi antenna which comprises a tapered slot which may be printed on a flat surface. Here the tapered slot is printed on the flexible substrate.
The dimensions of the slot depends on the frequency of wave to be transmitted/received by the antenna. However in the case where the band of operation is 5.46 to 7.25 GHz, preferably each slot comprises an aperture of substantially 42.5 millimetres with a length of substantially 110 millimetres. At about the lowest frequency of 5.5 GHz this gives an aperture of 0.8 wavelengths. Preferably the receive antenna comprises a pair of slots side by side which has the effect of narrowing the elevation pattern making the sensor less sensitive to the ground and less sensitive to bridges.
Distortion of such antenna during installation does not degrade performance provided that the angle of the surface does not change by more than about plus or minus 25C from the flat over the area of the antenna.
Brief Description of the Drawings An example of a sensor assembly in accordance with the invention will now be described with reference to the accompanying drawings in which : Figure 1 is a schematic view of the vehicle illustrating the position of the sensor assemblies; and, Figure 2 is a schematic view of the expected shape of an antenna cluster for one corner of the vehicle.
Description of the Preferred Embodiments A sensor assembly 1 for a collision warning system 3 for a motor vehicle 5 comprising a flexible printed circuit board 7 having printed upon it sensor electronics 9, the arrangement whereby the flexible printed circuit board 7 may be mounted on the inside of the vehicle bumper 11.
The vehicle 5 is illustrated schematically in figure 1, which depicts the position but not the detail of the bumpers 11 and their mountings. The collision warning system includes 4 sensor assemblies 13, 15, 17 and 19 mounted at the corners of the vehicle inside the bumpers 11.
The sensor assemblies are connected to central unit 21 which contains the means to interpret the signals from the assemblies to work out when a collision warning signal should be issued. The choice of such means will be apparent to the skilled addressee of the specification.
Each sensor assembly is as illustrated in figure 2 and comprises a polyamide substrate 7 having printed upon it the electronics 9 forming the sensor arrangement. The substrate is flexible such that the sensor assembly may conform to various different shapes of bumper. The sensor arrangement is adhered to the inner surface of the bumper.
The sensor comprises an antenna cluster comprising an impulse radar transmit antenna Tx between two impulse radar receive antennas Rxl and Rx2. Rxl faces towards the rear of the vehicle and Rx2 faces towards the front of the vehicle.
Each antenna has a band of operation of 5.46GHz to 7.25GHz.
The transmit antenna has a dual beam to the front and the rear whilst each receive antenna has a single beam to the front or to the rear.
Each antenna is in the form of a Vivaldi antenna, comprising tapered slots 23 to 31 printed upon the flexible PCB 7. Each slot has an aperture 'a' of 42.5mm with a length of 110mm.
Each receive antenna comprises two slots side by side. Thus antenna Rxl comprises slots 23 and 24, whilst Rx2 comprises slots 27 and 28 facing in the opposite direction to slots 23 and 24. The transmit antenna Tx comprises two pairs of side by side slots facing in opposite directions. First pair 25 and 26 face rearwards and second pair 29 and 31 face forwards. The effect of using pairs of slots is that the elevation pattern is narrowed making the sensor less sensitive to ground and less sensitive to bridges.
The angle of the surface of the bumper 11 on which the substrate 7 is to be mounted does not vary by more than about 25 from flat which does not degrade performance of the antenna.

Claims (8)

Claims
1. A sensor assembly for a collision warning system for a motor vehicle comprising a flexible printed circuit board having printed upon it sensor electronics, the arrangement whereby the flexible printed circuit board may be mounted on the inside of the vehicle bumper.
2. A sensor assembly according to claim 1, in which the substrate for the printed circuit board is polyester or polyamide.
3. A sensor assembly according to claim 1 or 2, in which the substrate includes an adhesive layer.
4. A sensor assembly according to any one of claims 1, 2 or 3 , in which the sensor includes an antenna cluster comprises a radar transmit antenna and two receive antennas, the transmit antenna mounted between the receive antennas, a first receive antenna facing towards the front of the vehicle and a second receive antenna facing towards the rear of the vehicle.
5. A sensor assembly according to any one of the preceding claims, in which the electronics are mounted near the centre of the flexible printed circuit board.
6. A sensor assembly according to any one of the preceding claims, in which each sensor is a radar sensor.
7. A sensor assembly according to claim 6, in which each sensor is an impulse radar sensor.
8. A sensor assembly arranged substantially as described herein with reference to and as illustrated in figures 1 and 2 of the accompanying drawings.
GB9718364A 1997-08-30 1997-08-30 Improvements in sensor assemblies for automotive collision warning systems Expired - Lifetime GB2328748B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9718364A GB2328748B (en) 1997-08-30 1997-08-30 Improvements in sensor assemblies for automotive collision warning systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9718364A GB2328748B (en) 1997-08-30 1997-08-30 Improvements in sensor assemblies for automotive collision warning systems

Publications (3)

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GB9718364D0 GB9718364D0 (en) 1997-11-05
GB2328748A true GB2328748A (en) 1999-03-03
GB2328748B GB2328748B (en) 2002-02-20

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801728A1 (en) * 1999-11-26 2001-06-01 Valeo Securite Habitacle Magnetic field emitting antenna for motor vehicle has spiral tracks printed on flat dielectric support
WO2001069724A1 (en) * 2000-03-15 2001-09-20 Hrl Laboratories, Llc. Planar antenna with switched beam diversity for interference reduction in a mobile environment
WO2001069723A1 (en) * 2000-03-15 2001-09-20 Hrl Laboratories, Llc. Vivaldi cloverleaf antenna
US6426722B1 (en) 2000-03-08 2002-07-30 Hrl Laboratories, Llc Polarization converting radio frequency reflecting surface
US6483481B1 (en) 2000-11-14 2002-11-19 Hrl Laboratories, Llc Textured surface having high electromagnetic impedance in multiple frequency bands
US6496155B1 (en) 2000-03-29 2002-12-17 Hrl Laboratories, Llc. End-fire antenna or array on surface with tunable impedance
GB2379346A (en) * 2001-03-31 2003-03-05 Richard Anderson Microwave vehicle detector
US6545647B1 (en) 2001-07-13 2003-04-08 Hrl Laboratories, Llc Antenna system for communicating simultaneously with a satellite and a terrestrial system
US6552696B1 (en) 2000-03-29 2003-04-22 Hrl Laboratories, Llc Electronically tunable reflector
US6670921B2 (en) 2001-07-13 2003-12-30 Hrl Laboratories, Llc Low-cost HDMI-D packaging technique for integrating an efficient reconfigurable antenna array with RF MEMS switches and a high impedance surface
US6739028B2 (en) 2001-07-13 2004-05-25 Hrl Laboratories, Llc Molded high impedance surface and a method of making same
FR2853996A1 (en) * 2003-04-15 2004-10-22 Thomson Licensing Sa Antenna system for PCMCIA card, has transmission antenna placed between two reception antennas, where antenna system is placed at edge of PCMCIA card in zone placed exterior to PCMCIA card reader in computer
US6812903B1 (en) 2000-03-14 2004-11-02 Hrl Laboratories, Llc Radio frequency aperture
US6864848B2 (en) 2001-12-27 2005-03-08 Hrl Laboratories, Llc RF MEMs-tuned slot antenna and a method of making same
GB2460152A (en) * 2008-05-21 2009-11-25 Nicholas Martin A vehicle with side impact warning means
GB2461896A (en) * 2008-07-17 2010-01-20 Land Rover Uk Ltd Antenna assembly for a motor vehicle
US8212739B2 (en) 2007-05-15 2012-07-03 Hrl Laboratories, Llc Multiband tunable impedance surface
US8940406B2 (en) 2008-08-13 2015-01-27 Novelis Inc. Automobile body part
WO2017108494A1 (en) * 2015-12-21 2017-06-29 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device comprising a circuit board which is flexible at least in some regions, ultrasonic sensor arrangement and motor vehicle
WO2017136796A1 (en) * 2016-02-04 2017-08-10 Ciuperger Vasile Vehicle perimeter alert system
DE102016124201A1 (en) * 2016-12-13 2018-06-14 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor arrangement comprising a plurality of ultrasonic sensor devices with an at least partially flexible printed circuit board and motor vehicle
US20190101636A1 (en) * 2017-10-04 2019-04-04 Infineon Technologies Ag Dual-Sided Radar Systems and Methods of Formation Thereof

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US7868829B1 (en) 2008-03-21 2011-01-11 Hrl Laboratories, Llc Reflectarray
US9466887B2 (en) 2010-11-03 2016-10-11 Hrl Laboratories, Llc Low cost, 2D, electronically-steerable, artificial-impedance-surface antenna
US8994609B2 (en) 2011-09-23 2015-03-31 Hrl Laboratories, Llc Conformal surface wave feed
US8982011B1 (en) 2011-09-23 2015-03-17 Hrl Laboratories, Llc Conformal antennas for mitigation of structural blockage

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EP0144837A2 (en) * 1983-11-28 1985-06-19 Solitron Devices, Inc. An electronic vehicle position indicator
GB2287917A (en) * 1994-03-29 1995-10-04 Bosch Gmbh Robert Concealed installation of a sensor in an external part of a motor vehicle

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EP0144837A2 (en) * 1983-11-28 1985-06-19 Solitron Devices, Inc. An electronic vehicle position indicator
GB2287917A (en) * 1994-03-29 1995-10-04 Bosch Gmbh Robert Concealed installation of a sensor in an external part of a motor vehicle

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801728A1 (en) * 1999-11-26 2001-06-01 Valeo Securite Habitacle Magnetic field emitting antenna for motor vehicle has spiral tracks printed on flat dielectric support
US6426722B1 (en) 2000-03-08 2002-07-30 Hrl Laboratories, Llc Polarization converting radio frequency reflecting surface
US6812903B1 (en) 2000-03-14 2004-11-02 Hrl Laboratories, Llc Radio frequency aperture
WO2001069724A1 (en) * 2000-03-15 2001-09-20 Hrl Laboratories, Llc. Planar antenna with switched beam diversity for interference reduction in a mobile environment
WO2001069723A1 (en) * 2000-03-15 2001-09-20 Hrl Laboratories, Llc. Vivaldi cloverleaf antenna
US6518931B1 (en) 2000-03-15 2003-02-11 Hrl Laboratories, Llc Vivaldi cloverleaf antenna
US6552696B1 (en) 2000-03-29 2003-04-22 Hrl Laboratories, Llc Electronically tunable reflector
US6496155B1 (en) 2000-03-29 2002-12-17 Hrl Laboratories, Llc. End-fire antenna or array on surface with tunable impedance
US6483481B1 (en) 2000-11-14 2002-11-19 Hrl Laboratories, Llc Textured surface having high electromagnetic impedance in multiple frequency bands
GB2379346B (en) * 2001-03-31 2004-10-20 Richard Anderson Microwave vehicle detector
GB2379346A (en) * 2001-03-31 2003-03-05 Richard Anderson Microwave vehicle detector
US6670921B2 (en) 2001-07-13 2003-12-30 Hrl Laboratories, Llc Low-cost HDMI-D packaging technique for integrating an efficient reconfigurable antenna array with RF MEMS switches and a high impedance surface
US6739028B2 (en) 2001-07-13 2004-05-25 Hrl Laboratories, Llc Molded high impedance surface and a method of making same
US7197800B2 (en) 2001-07-13 2007-04-03 Hrl Laboratories, Llc Method of making a high impedance surface
US6545647B1 (en) 2001-07-13 2003-04-08 Hrl Laboratories, Llc Antenna system for communicating simultaneously with a satellite and a terrestrial system
US6864848B2 (en) 2001-12-27 2005-03-08 Hrl Laboratories, Llc RF MEMs-tuned slot antenna and a method of making same
WO2004093250A1 (en) * 2003-04-15 2004-10-28 Thomson Licensing Radiating slit antenna system
FR2853996A1 (en) * 2003-04-15 2004-10-22 Thomson Licensing Sa Antenna system for PCMCIA card, has transmission antenna placed between two reception antennas, where antenna system is placed at edge of PCMCIA card in zone placed exterior to PCMCIA card reader in computer
US7408518B2 (en) 2003-04-15 2008-08-05 Thomson Licensing Radiating slit antenna system
US8212739B2 (en) 2007-05-15 2012-07-03 Hrl Laboratories, Llc Multiband tunable impedance surface
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