WO2019101453A1 - Système d'antennes pour véhicule - Google Patents

Système d'antennes pour véhicule Download PDF

Info

Publication number
WO2019101453A1
WO2019101453A1 PCT/EP2018/078884 EP2018078884W WO2019101453A1 WO 2019101453 A1 WO2019101453 A1 WO 2019101453A1 EP 2018078884 W EP2018078884 W EP 2018078884W WO 2019101453 A1 WO2019101453 A1 WO 2019101453A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
antenna
electromagnetic signal
antennas
antenna system
Prior art date
Application number
PCT/EP2018/078884
Other languages
German (de)
English (en)
Inventor
Nicky Jahn
Andreas Pohl
Original Assignee
Audi 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 Audi Ag filed Critical Audi Ag
Publication of WO2019101453A1 publication Critical patent/WO2019101453A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • H01Q3/34—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 by electrical means
    • H01Q3/36—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 by electrical means with variable phase-shifters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters

Definitions

  • the invention relates to an antenna system for simultaneously operating a plurality of different wireless connections of a vehicle, which comprises a plurality of antennas arranged in the vehicle for transmitting and receiving an electromagnetic signal.
  • a modern vehicle must be able to operate several different wireless connections simultaneously.
  • Vehicle-operated wireless connections can be made both with mobile terminals of an occupant of the vehicle, which are arranged in an interior of the vehicle, and with stationary transmitters, such as mobile radio antennas or satellites, which are arranged outside the vehicle.
  • US 7,227,508 B2 discloses an antenna system for operating a wireless connection of a vehicle to a satellite.
  • the antenna system includes a horizontal platform which can be rotatably integrated about a vertical axis in a roof of the vehicle.
  • On the platform a plurality of elongated wave guides are attached, which extend parallel to each other.
  • the wave guides are provided with a cover which has a plurality of cross-shaped radiating elements which are arranged in rows and offset from one another.
  • a beamforming method is used to continuously determine, with respect to a level of an electromagnetic signal received from a satellite, optimal rotation angles for the platform relative to the vehicle, by means of a beamforming method, to the antenna system while driving the vehicle continuously align with a satellite.
  • EP 2 991 242 A1 proposes a so-called SUDA system (Shared User Equipment-Side Distributed Antenna System) for increasing a transmission bandwidth by means of at least two mobile radio links which exist between a mobile terminal and respectively different mobile radio antennas.
  • the SUDA system may be integrated with a roof of a vehicle, particularly a car, bus or train, to allow multiple occupants of the vehicle to simultaneously enjoy unrestricted use of various data-intensive offerings, such as high-resolution video streams.
  • the various internal and external wireless connections differ in technical terms, for example, in terms of a radio standard, a carrier frequency or a range in some cases significantly different from each other. Accordingly, a variety of different antennas are usually provided in the vehicle.
  • Each of these twelve antennas is connected via its own coaxial cable with an electronic control unit (ECU) of the vehicle.
  • the coaxial cables are designed differently depending on a carrier frequency, which is assigned to the respective antenna to be connected to the coaxial cable.
  • a carrier frequency which is assigned to the respective antenna to be connected to the coaxial cable.
  • the invention is therefore based on the object to provide an improved antenna system for the simultaneous operation of several different wireless connections of a vehicle, which avoids the disadvantages described. Moreover, it is an object of the invention to propose a method for simultaneously operating a plurality of different wireless connections of a vehicle and a vehicle suitable for carrying out the method according to the invention.
  • An object of the present invention is an antenna system for a vehicle for simultaneously operating a plurality of different wireless connections, which comprises a plurality of antennas arranged in the vehicle for transmitting and receiving an electromagnetic signal.
  • At least one antenna arrangement arranged in the vehicle and integrating a plurality of antennas is provided, which is configured for each wireless connection of the plurality of wireless connections.
  • Such an antenna arrangement can be easily and inexpensively connected to a control device of the vehicle by means of a single coaxial cable and two plugs and sockets.
  • the plurality of antennas of the at least one antenna arrangement in an arrangement plane which defines a main radiation direction extending perpendicular to the arrangement plane and an azimuthal reference direction extending in the arrangement plane are arranged side by side, in particular in a matrix-like manner.
  • the plurality of antennas form a planar antenna array, which preferably has a regular arrangement of the plurality of antennas in rows and columns.
  • each antenna arrangement comprises a carrier which is in particular formed flat as a plate or mat and to which the plurality of antennas are fastened, and / or the several antennas are flat.
  • the carrier By means of the carrier, the plurality of antennas can be modularly integrated with predetermined distances from one another, which is accompanied by simple handling of the antenna arrangement. If both the carrier and the plurality of antennas are formed flat, the antenna assembly can be mounted easily in tight installation situations.
  • a beamforming unit associated with the antenna arrangement which determines a transmission direction for an electromagnetic signal to be transmitted which is inclined by a specific polar angle with respect to the main radiation direction and / or with respect to the azimuth reference direction by a specific azimuth angle is rotated, is configured.
  • the beamforming unit is designed to control the plurality of antennas of the antenna arrangement in a phase-shifted manner with respect to one another, such that an overlapping of the individual electromagnetic radiation emanating from the plurality of antennas results in an electromagnetic signal radiated into a specific transmission direction (superposition principle).
  • the particular transmission direction can be by means of so-called Polar coordinates, which include a polar angle and an azimuth angle indicate.
  • a direction of arrival (DOA) associated with the antenna arrangement is connected, which for detecting a receiving direction of an electromagnetic signal, which is inclined by a certain polar angle relative to the main radiation direction and / or with respect to the Azimuth reference direction is rotated by a certain azimuth angle is configured.
  • DOA direction of arrival
  • Direction detection unit is the counterpart to a beamforming unit. It is designed to determine a direction of reception of the electromagnetic signal from a detected phase offset of the individual electrical signals received by the plurality of antennas. In this way, the antenna arrangement can be aligned with an electromagnetic signal received by a specific mobile terminal.
  • the detected reception direction can be indicated by means of so-called polar coordinates, which comprise a polar angle and an azimuth angle.
  • a position of a mobile terminal of an occupant of the vehicle in the interior of the vehicle can be detected to provide an optimally aligned unidirectional or bidirectional wireless connection between the vehicle and the mobile terminal.
  • the beamforming unit is configured to transform a particular first intermediate frequency into a transmission frequency of an electromagnetic signal to be transmitted, and / or the direction detection unit is configured to transform a reception frequency of a received electromagnetic signal into a particular second intermediate frequency.
  • a so-called intermediate frequency designates a carrier frequency which is different from a transmission frequency or reception frequency and which comprises the electromagnetic signal of the original transmission frequency or reception frequency is impressed.
  • the invention also provides a method for simultaneously operating a plurality of different wireless connections of a vehicle, in which an electromagnetic signal is transmitted and received with at least one antenna arrangement arranged in the vehicle and integrating a plurality of antennas, in particular with an antenna arrangement according to the invention.
  • a specific first intermediate frequency is transformed into a transmission frequency of an electromagnetic signal to be transmitted and / or a reception frequency of a received electromagnetic signal into a specific second intermediate frequency.
  • Another object of the invention is a vehicle which comprises a control unit and a plurality of antenna systems connected to the control unit in each case by means of a coaxial cable, which are designed to carry out a method according to the invention for simultaneously operating a plurality of different wireless connections of the vehicle.
  • the controller has a hardware and control software required for the various wireless connections.
  • Antenna system are installed and maintained cost-effective and time-saving, which improves the profitability of the vehicle.
  • a weight of the vehicle is reduced, which further increases the profitability of the vehicle.
  • the plurality of antenna systems are arranged in a flight of the vehicle and / or the plurality of antenna systems are in a plurality of rows extending perpendicular to a front-to-rear direction of the vehicle, in particular exactly two antenna systems in a front row and exactly two antenna systems in a rear row, which are respectively arranged on opposite sides of a central longitudinal axis of the vehicle, in particular symmetrically to the latter.
  • Figure 1 is a schematic representation of a plan view of a
  • Figure 2 is a schematic representation of a block diagram of a
  • Embodiment of the antenna system according to the invention for the simultaneous operation of several different wireless connections of the vehicle for the simultaneous operation of several different wireless connections of the vehicle
  • FIG. 3 is a schematic representation of a transmitted electromagnetic signal of the antenna system shown in FIG. 2
  • Figure 4 is a schematic representation of a plan view of an embodiment of the vehicle according to the invention with four of the antenna systems shown in Figure 2.
  • FIG. 1 shows a schematic representation of a top view of a vehicle 20 with an antenna system for simultaneously operating a plurality of different wireless connections of the vehicle 20 according to the prior art.
  • twelve antennas 31 are arranged at different positions, and each connected to a control device (not shown) of the vehicle 20 by means of a plug-in coaxial cable (not shown).
  • FIG. 2 is a schematic diagram of a block diagram of an embodiment of the antenna system 10 of the present invention for simultaneously operating a plurality of different wireless connections of a vehicle 20.
  • the antenna system 10 is configured to simultaneously operate a plurality of different wireless connections and includes an antenna array 30 for transmitting and integrating multiple antennas 31 Receiving an electromagnetic signal 37.
  • the antenna assembly 30 has a plate-shaped flat carrier 36 to which the plurality of antennas 31 are attached.
  • the plurality of antennas 31 of the antenna arrangement 30 are also flat and are arranged in an array plane 32, which defines a vertical radiation direction 33 extending perpendicular to the arrangement plane 32 and an azimuthal reference direction extending in the arrangement plane 32.
  • the antenna system 10 comprises a beamforming unit 40 which is assigned to the antenna arrangement 30 and which is connected to the antenna arrangement 30.
  • the beamforming unit 40 is for determining a transmission direction 34 for an electromagnetic signal 37 to be transmitted, which is inclined with respect to the main radiation direction 33 by a specific polar angle 35 and / or with respect to the azimuth reference direction a certain azimuth angle is rotated, configured.
  • the beamforming unit 40 is also configured to transform a particular first intermediate frequency into a transmission frequency of an electromagnetic signal 37 to be transmitted.
  • the antenna system 10 further comprises a direction detection unit 50 assigned to the antenna arrangement 30, which is connected to the antenna arrangement 30.
  • the direction detecting unit 50 is configured to detect a receiving direction of an electromagnetic signal 37 which is inclined by a certain polar angle with respect to the main radiation direction 33 and / or is rotated relative to the azimuth reference direction by a specific azimuth angle.
  • the direction detection unit 50 is also configured to transform a reception frequency of a received electromagnetic signal 37 into a specific second intermediate frequency.
  • FIG. 3 shows a schematic representation of a transmitted electromagnetic signal of the antenna system 10 shown in FIG. 2.
  • an electromagnetic signal radiated in a transmission direction 34 inclined by a polar angle 35 with respect to the main radiation direction 33 is emitted 37 formed (superposition principle).
  • An additional rotation of the transmission direction 34 by an azimuth angle related to the azimuthal reference direction is not shown because of the two-dimensionality of the selected representation, but belongs to the specialist knowledge and expertise of the person skilled in the art.
  • FIG. 4 shows a schematic representation of a top view of an embodiment of the vehicle 20 according to the invention with four antenna systems 10 according to the invention.
  • the vehicle 20 further comprises a control unit 21, to which the four antenna systems 10 are connected by means of a coaxial cable 22.
  • the four antenna systems 10 are arranged in a sky of the vehicle 20 in two rows 25, 26 extending perpendicular to a front-to-rear direction 23 of the vehicle.
  • Two antenna systems 10 are located in a front row 25 and two antenna systems 10 in a rear row 26.
  • the two antenna systems 10 of a row 25, 26 are arranged on opposite sides of a central longitudinal axis 24 of the vehicle 20 symmetrical to this.
  • a plurality of wireless connections are operated simultaneously with non-illustrated mobile terminals in the interior of the vehicle 20.
  • the electromagnetic signals 37 required for this purpose are transmitted and received by the antenna arrangements 30 of the antenna systems 10.
  • a specific first intermediate frequency is transformed into a transmission frequency of an electromagnetic signal 37 to be transmitted and a reception frequency of a received electromagnetic signal 37 into a specific second intermediate frequency in order to transmit the transformed electromagnetic signals 37 to the control unit 21 via the four coaxial cables 22 ,
  • a significant advantage of the antenna system 10 according to the invention is that only one single pluggable coaxial cable 22 is required per antenna system 10 and a few antenna systems 10 are sufficient for optimum radio coverage in an interior of the vehicle 20. This simplifies the mounting and maintenance of the antenna systems 10 and reduces the cost of optimal radio coverage. In addition, the antenna systems according to the invention lead to a reduced weight of the vehicle 20, which can have a favorable effect on the energy requirement of the vehicle 20. LIST OF REFERENCE NUMBERS:

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un système d'antennes pour un véhicule servant à faire fonctionner simultanément plusieurs liaisons sans fil différentes, lequel système comprend plusieurs antennes disposées dans le véhicule et destinées à émettre et recevoir un signal électromagnétique.
PCT/EP2018/078884 2017-11-23 2018-10-22 Système d'antennes pour véhicule WO2019101453A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017220949.6 2017-11-23
DE102017220949.6A DE102017220949A1 (de) 2017-11-23 2017-11-23 Antennensystem für ein Fahrzeug

Publications (1)

Publication Number Publication Date
WO2019101453A1 true WO2019101453A1 (fr) 2019-05-31

Family

ID=64049127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/078884 WO2019101453A1 (fr) 2017-11-23 2018-10-22 Système d'antennes pour véhicule

Country Status (2)

Country Link
DE (1) DE102017220949A1 (fr)
WO (1) WO2019101453A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110203156B (zh) * 2019-05-31 2021-10-22 大陆汽车电子(长春)有限公司 分布式无线车身控制系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030117328A1 (en) * 2001-07-13 2003-06-26 Hrl Laboratories, Llc Low-profile, multi-antenna module, and method of integration into a vehicle
US20050146478A1 (en) * 2004-01-07 2005-07-07 Wang James J. Vehicle mounted satellite antenna embedded within moonroof or sunroof
EP2991242A1 (fr) 2014-08-27 2016-03-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Contrôleur pour système SUDA
DE102016204997A1 (de) 2016-03-24 2017-09-28 Volkswagen Aktiengesellschaft Vorrichtung, Verfahren und Computerprogramm zum Lokalisieren von mobilen Geräten
DE102016213703A1 (de) 2016-07-26 2018-02-01 Volkswagen Aktiengesellschaft Vorrichtung, Fahrzeug, Verfahren, Computerprogramm und Funksystem zur Funkversorgung in einem vordefinierten Raum

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030117328A1 (en) * 2001-07-13 2003-06-26 Hrl Laboratories, Llc Low-profile, multi-antenna module, and method of integration into a vehicle
US20050146478A1 (en) * 2004-01-07 2005-07-07 Wang James J. Vehicle mounted satellite antenna embedded within moonroof or sunroof
US7227508B2 (en) 2004-01-07 2007-06-05 Motia Inc. Vehicle mounted satellite antenna embedded within moonroof or sunroof
EP2991242A1 (fr) 2014-08-27 2016-03-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Contrôleur pour système SUDA
DE102016204997A1 (de) 2016-03-24 2017-09-28 Volkswagen Aktiengesellschaft Vorrichtung, Verfahren und Computerprogramm zum Lokalisieren von mobilen Geräten
DE102016213703A1 (de) 2016-07-26 2018-02-01 Volkswagen Aktiengesellschaft Vorrichtung, Fahrzeug, Verfahren, Computerprogramm und Funksystem zur Funkversorgung in einem vordefinierten Raum

Also Published As

Publication number Publication date
DE102017220949A1 (de) 2019-05-23

Similar Documents

Publication Publication Date Title
DE102006025176B4 (de) Antennenmodul für ein Fahrzeug
DE102017210137B4 (de) Radarvorrichtung und Verfahren zum Verarbeiten eines Radarsignals
EP1532716B1 (fr) Dispositif d'etalonnage destine a un reseau d'antennes et procede d'etalonnage de ce reseau d'antennes
EP3204790B1 (fr) Ensemble capteur radar et véhicule automobile
DE112019006800T5 (de) Antennenvorrichtung und Radarvorrichtung
EP2862235B1 (fr) Système d'antenne et procédé
EP3054529B1 (fr) Systeme de positionnement pour antennes et systeme d'antennes
DE112016007546T5 (de) Radarvorrichtung
DE102016211890A1 (de) Antenne und Fahrzeug, das die Antenne aufweist
EP3148096A1 (fr) Aeronef comprenant plusieurs antennes
DE112018003566T5 (de) Radarvorrichtung
WO2019101453A1 (fr) Système d'antennes pour véhicule
EP2348576A1 (fr) Module d'antenne
DE102017219372A1 (de) Radarsensor mit mehreren Hauptstrahlrichtungen
WO2009013170A1 (fr) Dispositif de communication et son procédé de fonctionnement
DE102010061995A1 (de) Antennenvorrichtung und Fahrzeug mit einer Antennenvorrichtung
DE102017102349B4 (de) Antenne zur Kommunikation mittels Wellen
EP3868025B1 (fr) Dispositif émetteur-récepteur destiné à un véhicule automobile et véhicule automobile pourvu d'un tel dispositif émetteur-récepteur
EP4046238B1 (fr) Système d'antenne
DE102021108158B4 (de) Antennenanordnung, Kraftfahrzeug und Verfahren zum Betreiben einer Antennenanordnung
EP2212714B1 (fr) Procédé pour échanger des signaux radar
EP3803443A1 (fr) Radar polarimétrique, son utilisation appropriée et son procédé à cette fin
DE102018210200B4 (de) Drahtlosnetzwerk für ein Fahrzeug
DE102021122527A1 (de) Kommunikationseinheit und Fahrzeug mit Kommunikationseinheit
EP3619769B1 (fr) Système d'antenne pour véhicule

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18795382

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 18795382

Country of ref document: EP

Kind code of ref document: A1