EP2225799B1 - Système d'antenne pour un émetteur-récepteur radar, et circuit électrique pour alimenter un système d'antenne d'un tel émetteur-récepteur radar - Google Patents

Système d'antenne pour un émetteur-récepteur radar, et circuit électrique pour alimenter un système d'antenne d'un tel émetteur-récepteur radar Download PDF

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Publication number
EP2225799B1
EP2225799B1 EP08861471A EP08861471A EP2225799B1 EP 2225799 B1 EP2225799 B1 EP 2225799B1 EP 08861471 A EP08861471 A EP 08861471A EP 08861471 A EP08861471 A EP 08861471A EP 2225799 B1 EP2225799 B1 EP 2225799B1
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EP
European Patent Office
Prior art keywords
patches
primary
antenna
antenna arrangement
primary exciter
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.)
Not-in-force
Application number
EP08861471A
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German (de)
English (en)
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EP2225799A1 (fr
Inventor
Juergen Hasch
Ewald Schmidt
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2225799A1 publication Critical patent/EP2225799A1/fr
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Publication of EP2225799B1 publication Critical patent/EP2225799B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
    • H01Q19/062—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for focusing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Definitions

  • the invention relates to an antenna arrangement for a radar transceiver, in particular for distance and / or speed determination in the environment of vehicles, and to a circuit arrangement for feeding the primary excitation patches of such an antenna arrangement according to the preambles of the independent claims.
  • Such radar transceivers d. H. Transceiver modules are used in the microwave and millimeter-wave range for locating objects in space or for speed determination, for example of vehicles.
  • Such radar transceivers are used for example for driver assistance systems, which z. B. for determining the distance of a vehicle ahead in front of another vehicle and for distance control.
  • a radar transceiver for locating objects in space and determining the speed of the highest-frequency signals in the form of electromagnetic waves, which are reflected from the target object and received by the radar transceiver and further processed.
  • several of these radar transceivers are interconnected to form an overall module.
  • a radar sensor has been known in which a part of the antenna is arranged directly on a semiconductor circuit, while a second part is arranged on a carrier which is positioned at a distance above the first part.
  • Such a radar sensor essentially has an antenna characteristic, i. H. a beam characteristic, which is specified by design.
  • the invention is based on the object of developing a generic antenna arrangement so that it can be used for different beam characteristics.
  • it should be used as a monopulse antenna.
  • Monopulse antennas are antenna groups whose individual antennas are not only connected together in a sum-forming manner, but in which other circuit options can also be realized. In particular, different differences can also be formed for different purposes. By comparing the amplitude of the sum channel and different, for example, differential channels, a localization of the reflecting object within the radar beam can take place. It is also possible to form a differential channel by an antiphase coupling of the left to the right antenna groups.
  • the antenna arrangement according to the invention for a radar transceiver with the features of claim 1 and the circuit arrangement for supplying the primary exciter patches of such an antenna arrangement with the features of claim 8 allow in a very advantageous manner the operation of the antenna according to the so-called monopulse method. In particular, switching between two antenna characteristics is enabled. As a result, an extremely advantageous in a radar sensor Winkel consultation be reached. It is particularly advantageous that a use of the monopulse principle for an antenna concept with arranged on a support, in particular a chip primary exciters is possible by the antenna arrangement according to the invention. This allows easy production and easy operation.
  • the one carrier is a chip.
  • the design of the carrier as a chip has the great advantage that the antenna arrangement can be realized on a semiconductor circuit with integrated primary exciter. In this case, it is particularly advantageous that no additional external additional components are necessary for the operation of such an antenna arrangement.
  • the chip may also contain the circuit device for controlling the primary exciter patches. But it is also possible to form this carrier as a printed circuit board, soft board substrate or conductor foil.
  • the other, further carrier can be formed by a printed circuit board and / or a softboard substrate or a conductor foil.
  • a particularly preferred embodiment provides to attach the two carriers by flip-chip connections to each other and to contact.
  • These flip-chip connections are advantageously realized essentially by substantially spherical solder joints. In this way, a very simple production at the same time good contact can be achieved.
  • both secondary exciter patches either on the upper side or on the lower side of the further carrier or one on the upper side, the other on the lower side of the further carrier.
  • the arrangement is essentially dependent on the frequency with which the antenna arrangement is operated, and depending on the field of application.
  • the height of the contact elements, the z. B. is 70 microns, and the thickness of the conductor foil, the z. B. may vary between 50 to 300 microns, in addition to the surrounding material properties, the main determinant parameters for optimizing the dimensions of the primary exciter patches and the secondary patches.
  • the feed connections of the primary excitation patches are connected to the longitudinal edges of the primary exciter patches.
  • the connection positions of the supply lines are basically arbitrary and are determined only by a predetermined, desired impedance. Depending on a desired input impedance of the antenna, the selection of the (orifice) positions of the feed connections to the primary exciter patches takes place.
  • potting compound embedding primary primary patches and the secondary patches, in particular a silicone gel or a so-called underfillers based on epoxy resin and to fill this space with it.
  • Such an antenna is operated with a circuit arrangement for feeding the primary exciter patches, which has a switching device in the first switching position at the feed terminal of the first primary excitation patch, a high-frequency signal and at the supply terminal of the second primary exciter patches a high-frequency signal with a phase shift by 180 ° can be applied, and in whose second switching position on the supply line of the first primary excitation patches and on the supply line of the second primary exciter patches each an in-phase high-frequency signal can be applied.
  • it is additionally provided to regulate the amplitude of the high-frequency signal which is present at one of the two supply connections. This makes it possible to realize a pivoting of the antenna characteristic.
  • Fig. 1 and Fig. 2 is schematically illustrated an antenna arrangement for a radar transceiver, in particular for distance and / or speed determination in the environment of vehicles.
  • a first antenna part is arranged on a carrier, for example on a chip 5.
  • the first antenna part has two substantially rectangular primary exciter patches, a first primary exciter patch 10 and a second primary exciter patch 20, which adjoin one another at a narrow edge and are jointly short-circuited to ground via a ground terminal 40.
  • the two primary excitation patches 10, 20 each have a length 1, which corresponds to about one quarter of the wavelength of the mm or ⁇ m wave to be radiated.
  • the electromagnetic wave is released and excites secondary excitation patches 51, 52 arranged above the primary excitation patches 10, 20.
  • the secondary patches 51, 52 are at a predeterminable distance above the primary patches 10,20 - as in Fig. 2 shown schematically - arranged. The choice of the distance depends on the wavelength of the radar radiated and is approximately between 100 and 150 microns.
  • the secondary patches 51, 52 are, for example, at another, in Fig. 2 arranged to better clarity transparent carrier 59.
  • This carrier 59 can consist, for example, of a film, of a printed circuit board, of a softboard substrate or of a conductor foil.
  • the carrier 5 is preferably connected via flip-chip connections 80 to the carrier 59 and contacted.
  • the first primary exciter patch 10 is connected to a feed line 11.
  • the second Primärerregerpatch 20 has a separate feed line 12.
  • the feed lines 11, 12 abut against one edge of the first and second primary excitation patches 10 and 20 respectively and open into the first and second primary excitation patches 10 and 20, respectively.
  • the choice of the position at which the feed lines 11, 12 are respectively in the first or second Primärerregerpatch 10 and 20 open, can be arbitrary, it is essentially determined by a predetermined input impedance. This means that the position is selected so that a desired input impedance is achieved.
  • the space between the carrier 5 and the further carrier 59 may be filled by a potting compound 90 embedding the primary patches 10, 20 and the secondary patches 51, 52, in particular a silicone gel or a so-called underfill based on epoxy resin.
  • a potting compound 90 embedding the primary patches 10, 20 and the secondary patches 51, 52, in particular a silicone gel or a so-called underfill based on epoxy resin.
  • Fig. 1 schematically illustrated circuit arrangement 100 is provided, which has a switching device 110 for switching between two switching positions 1, 2.
  • the two supply lines 11, 12 each fed with high-frequency signals having a phase offset of 180 ° (switching position ⁇ - sum).
  • This results in the in Fig. 3 represented antenna characteristic "sum" with a single beam cone.
  • a beam tilt of up to ⁇ 10 ° can be achieved by controlling the amplitude of the RF signal applied to the feed terminal 12.
  • Fig. 5 an unguided antenna characteristic with a high-frequency signal to feed line 11 and a high-frequency signal of the same amplitude and a phase offset of 180 ° to feed line 12 with a dashed line 501 is shown.
  • a tilted by 10 ° antenna characteristic in which the second feed line 12 is acted upon by a high-frequency signal having an amplitude which is half the amplitude of the signal fed to the first feed line 11, and in turn with 180 ° phase rotation between the two feed lines 11, 12 is shown with line 502.
  • line 502. By choosing the amplitude, a rotation of the antenna characteristic can be achieved.
  • parts of an integrated circuit are placed on the carrier 5 in addition to the primary exciter patches 11, 12, for example the circuit arrangement 100 or other or additional circuit devices.
  • the antenna arrangement is operated, for example, with an operating frequency of 122 GHz.
  • Typical dimensions at this operating frequency are approximately the following length and width ratios of the primary exciter patches 10, 20: 295 .mu.m.times.160 .mu.m
  • the secondary exciter patches 51, 52 have approximately length and width ratios of 1050 .mu.m.times.400 .mu.m.
  • the distance between the primary and secondary patches is about 100 microns.
  • the secondary excitation patches 51, 52 are arranged at a distance A, that between them a gap or a gap remains free, which releases the common ground contact 40 of the adjacent primary excitation patches 10, 20 in the beam direction.
  • the secondary patches 51, 52 may be disposed on both sides of the carrier 59. The arrangement is dependent on the frequency and the application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (9)

  1. Arrangement d'antenne pour un émetteur/récepteur radar, notamment pour la détermination de la distance et/ou de la vitesse dans l'environnement de véhicules automobiles, dans lequel une première partie d'antenne est disposée sur un support (5) et une deuxième partie d'antenne est disposée sur un support (59) supplémentaire monté à distance du premier, caractérisé par les caractéristiques ci-après :
    - la première partie d'antenne présente deux fiches de raccordement d'excitateur primaire (10, 20) de forme essentiellement rectangulaire qui sont respectivement juxtaposées au niveau d'un bord et qui y sont court-circuitées à la masse ;
    - les deux fiches de raccordement d'excitateur primaire (10, 20) présentent deux lignes d'alimentation (11, 12) séparées ;
    - la deuxième partie d'antenne comprend deux fiches de raccordement d'excitateur secondaire (51, 52) de forme rectangulaire séparées l'une de l'autre, qui recouvrent partiellement les fiches de raccordement d'excitateur primaire (10, 20) et qui présentent dans la zone du court-circuit à la masse (40) des fiches de raccordement d'excitateur primaire (10, 20), dans le sens du rayonnement, un écart (A) mutuel qui libère au moins le court-circuit à la masse (40).
  2. Arrangement d'antenne selon la revendication 1, caractérisé en ce que le support qui supporte les fiches de raccordement d'excitateur primaire (10, 20) est formé par une puce électronique (5), un circuit imprimé, un substrat de carte souple ou un film conducteur.
  3. Arrangement d'antenne selon la revendication 1, caractérisé en ce que le support (59) qui supporte les fiches de raccordement d'excitateur secondaire (51, 52) est formé par un circuit imprimé, un substrat de carte souple ou un film conducteur.
  4. Arrangement d'antenne selon l'une des revendications 1 à 3, caractérisé en ce que les deux supports (5, 59) sont fixés l'un à l'autre par des liaisons de type Flip-Chip (80) et sont mis en contact l'un avec l'autre.
  5. Arrangement d'antenne selon l'une des revendications précédentes, caractérisé en ce que les deux fiches de raccordement d'excitateur secondaire (51, 52) sont disposées sur le côté supérieur et/ou sur le côté inférieur du deuxième support (59).
  6. Arrangement d'antenne selon l'une des revendications précédentes, caractérisé en ce que les lignes d'alimentation (11, 12) des fiches de raccordement d'excitateur primaire (10, 20) sont raccordées aux bords longs des fiches de raccordement d'excitateur primaire (10, 20), la position de raccordement des lignes d'alimentation (11, 12) pouvant être choisie en fonction d'une impédance souhaitée et pouvant être prédéfinie de l'arrangement d'antenne.
  7. Arrangement d'antenne selon l'une des revendications précédentes, caractérisé en ce que l'espace entre les deux supports (5, 59) est rempli par une masse de scellement (90) qui enrobe les fiches de raccordement d'excitateur primaire (10, 20) et, le cas échéant, les fiches de raccordement d'excitateur secondaire (51, 52), notamment un gel de silicone ou une masse d'encapsulation à base de résine époxy.
  8. Dispositif de commutation (100) pour alimenter les fiches de raccordement d'excitateur primaire (10, 20) d'un arrangement d'antenne selon l'une des revendications 1 à 7 avec au moins un signal à haute fréquence, caractérisé par un dispositif inverseur (110), dans lequel, dans une position de commutation (1), un signal à haute fréquence peut être appliqué à la borne d'alimentation (11) de la première fiche de raccordement d'excitateur primaire (10), et un signal à haute fréquence avec un déphasage de 180° peut être appliqué à la borne d'alimentation (12) de la deuxième fiche de raccordement d'excitateur primaire (20) et, dans sa deuxième position de commutation (2), un signal à haute fréquence à chaque fois de même phase peut être appliqué à la première ligne d'alimentation (11) de la première fiche de raccordement d'excitateur primaire (10) et à la deuxième ligne d'alimentation (12) de la deuxième fiche de raccordement d'excitateur primaire (20).
  9. Dispositif de commutation selon la revendication 8, caractérisé en ce que l'amplitude du signal à haute fréquence appliqué à au moins une borne d'alimentation (11, 12) est réglable dans la première position de commutation (1) du dispositif inverseur (110) pour faire basculer le cône de rayonnement.
EP08861471A 2007-12-17 2008-10-21 Système d'antenne pour un émetteur-récepteur radar, et circuit électrique pour alimenter un système d'antenne d'un tel émetteur-récepteur radar Not-in-force EP2225799B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007060770A DE102007060770A1 (de) 2007-12-17 2007-12-17 Antennenanordnung für einen Radar-Transceiver und Schaltungsanordnung zum Speisen einer Antennenanordnung eines solchen Radar-Transceivers
PCT/EP2008/064165 WO2009077235A1 (fr) 2007-12-17 2008-10-21 Système d'antenne pour un émetteur-récepteur radar, et circuit électrique pour alimenter un système d'antenne d'un tel émetteur-récepteur radar

Publications (2)

Publication Number Publication Date
EP2225799A1 EP2225799A1 (fr) 2010-09-08
EP2225799B1 true EP2225799B1 (fr) 2011-06-22

Family

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Application Number Title Priority Date Filing Date
EP08861471A Not-in-force EP2225799B1 (fr) 2007-12-17 2008-10-21 Système d'antenne pour un émetteur-récepteur radar, et circuit électrique pour alimenter un système d'antenne d'un tel émetteur-récepteur radar

Country Status (5)

Country Link
US (1) US8390521B2 (fr)
EP (1) EP2225799B1 (fr)
AT (1) ATE514202T1 (fr)
DE (1) DE102007060770A1 (fr)
WO (1) WO2009077235A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034329A1 (de) * 2007-07-24 2009-01-29 Robert Bosch Gmbh Radarvorrichtung
DE102010064346A1 (de) * 2010-12-29 2012-07-05 Robert Bosch Gmbh Radarsensor für Kraftfahrzeuge
CN108459302A (zh) * 2018-02-11 2018-08-28 西南电子技术研究所（中国电子科技集团公司第十研究所） 线性调频连续波雷达收发前端

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054466A1 (de) * 2004-11-11 2006-06-08 Robert Bosch Gmbh Radarsystem insbesondere zur Entfernungs- und/oder Geschwindigkeitsmessung
DE102004063541A1 (de) 2004-12-30 2006-07-13 Robert Bosch Gmbh Antennenanordnung für einen Radar-Transceiver
DE102005046044A1 (de) 2005-09-27 2007-03-29 Robert Bosch Gmbh Radar-Sensor
DE102005056756A1 (de) 2005-11-29 2007-05-31 Robert Bosch Gmbh Antennenanordnung für einen Radar-Sensor

Also Published As

Publication number Publication date
EP2225799A1 (fr) 2010-09-08
ATE514202T1 (de) 2011-07-15
WO2009077235A1 (fr) 2009-06-25
US8390521B2 (en) 2013-03-05
US20100321268A1 (en) 2010-12-23
DE102007060770A1 (de) 2009-06-18

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