WO2016045830A1 - Antenne pour radar de proximité - Google Patents

Antenne pour radar de proximité Download PDF

Info

Publication number
WO2016045830A1
WO2016045830A1 PCT/EP2015/067494 EP2015067494W WO2016045830A1 WO 2016045830 A1 WO2016045830 A1 WO 2016045830A1 EP 2015067494 W EP2015067494 W EP 2015067494W WO 2016045830 A1 WO2016045830 A1 WO 2016045830A1
Authority
WO
WIPO (PCT)
Prior art keywords
patch
resonator
antenna
patch element
patch antenna
Prior art date
Application number
PCT/EP2015/067494
Other languages
German (de)
English (en)
Inventor
Juergen Hasch
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2016045830A1 publication Critical patent/WO2016045830A1/fr

Links

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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • 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

Definitions

  • the invention relates to a patch antenna having a planar substrate, a first resonator, a second resonator and a first patch element, wherein the first resonator, the second resonator and the first patch element are arranged on the planar substrate parallel to a main extension plane, wherein the first patch element between the first resonator and the second resonator, as well as a patch antenna arrangement and a radar sensor.
  • the antenna elements of vehicle radar sensors have different arrangements of patch elements depending on the range to be achieved.
  • a patch element that is centrally powered and has two parasitic patch elements associated with a dielectric lens antenna One
  • Antenna element for medium-range radar sensors a so-called mid-range radar, is realized from a series-fed array of patch elements. This allows a high antenna gain in the azimuth and / or elevation direction.
  • the document US 2013/0169503 A1 describes a microstrip line antenna which has in each case two parasitic resonators which are arranged next to each patch element.
  • the parasitic resonators have no electrical connection with the patch elements, but influence the emission characteristic of the patch element.
  • the document US 5576718 describes an array antenna, which on a
  • dielectric substrate is formed.
  • active patch elements and parasitic resonators are arranged in an alternating pattern. The arrangement of the active patch elements and the parasitic resonators influences the characteristics of the antenna.
  • the object of the invention is to provide an antenna for parking functions of a vehicle.
  • the invention is based on a patch antenna which has a planar substrate, a first resonator, a second resonator and a first patch element.
  • the first resonator, the second resonator and the first patch element are arranged on the planar substrate parallel to a main extension plane.
  • the first patch element is arranged between the first resonator and the second resonator.
  • the essence of the invention is that a second patch element between the first resonator and the second resonator adjacent to the first
  • the advantage here is that a bundling of the radiation takes place in the elevation direction. At the same time, the radiation in the azimuth direction has a large opening angle. It is also advantageous that no unwanted resonances occur through the use of two individual patch elements.
  • the patch antenna with a
  • the first patch element and the second patch element have the same dimensions.
  • the first page is the side of the first patch element or the second patch element that is connected to the power splitter.
  • the first resonator and the second resonator have the same dimensions. In this case, one side of the first
  • Resonator which is arranged immediately adjacent to the second side of the first patch element, a same length as the second side of the first
  • One side of the second resonator disposed immediately adjacent to the second side of the second patch element has a same length as the second side of the second patch element.
  • the patch antenna arrangement with a first patch antenna and a second patch antenna is designed according to the invention such that the first
  • Patch antenna and the second patch antenna are arranged mirror-symmetrically on the flat substrate parallel to the main extension plane.
  • the first patch antenna and the second patch antenna have a small one
  • the advantage here is that the patch antenna arrangement is optimally designed for parking functions, since with this patch antenna arrangement, a limited opening angle in the elevation direction of approximately 30 ° to 45 ° and an opening angle in the azimuth direction of more than 120 ° is realized.
  • the radar sensor has two patch antenna arrays according to the invention which function as receiving antennas. They are connected to a first integrated high-frequency circuit. Furthermore, two patch antennas according to the invention are provided, which function as transmitting antennas and are connected to a second integrated high-frequency circuit.
  • the advantage here is that the radar sensor for everyday parking situations in the vicinity, d. H. at a distance less than 20 cm to the vehicle, can be used.
  • FIG. 1 shows a patch antenna according to the invention with two patch elements and two resonators
  • Figure 2 is a typical radiation diagram of the invention
  • FIG. 3 shows a patch antenna arrangement according to the invention and FIG. 4 shows an antenna system according to the invention for a wheel sensor.
  • the first resonator 14, the second resonator 15, the first patch element 16 and the second patch element 17 are arranged parallel to a main extension plane of the sheet-like substrate 16.
  • the first patch element 12 and the second patch element 13 are arranged directly adjacent to one another between the first resonator 14 and the second resonator 15.
  • the first patch element 12 and the second patch element 13 are configured rectangular and have the same dimensions.
  • Patch element 12 and the second patch element 13 each have a first side, wherein the first side is electrically coupled. Right-angled to this first page is a second page. The second page is shorter than the first page.
  • the first resonator 14 and the second resonator 15 are also rectangular in shape and have the same dimensions.
  • one side of the first resonator which is arranged directly next to the second side of the first patch element 12, has the same length as the second side of the first patch element.
  • Patch element 12 is electrically connected to a first branch of the power divider 11.
  • the first side of the second patch element 13 is connected to a second one Branch of the power divider 11 electrically connected.
  • the power divider 11 is, for example, a 3dB power coupler.
  • the planar substrate 16 is made of Teflon, for example.
  • the first resonator 14 and the second resonator 15 are electrically connected neither to the first patch element 12 nor to the second patch element 13. They act as parasitic elements.
  • Patch element 12 is electrically connected centrally to the first branch of the power divider 11 and the first side of the second patch element 13 is electrically connected centrally with the second branch of the power divider 11.
  • the length of the first side of the first patch element 12 and the length of the first side of the second patch element 12 are the length of the first side of the first patch element 12 and the length of the first side of the second
  • Patch element 13 each 1300 ⁇ .
  • One side of the resonator which is perpendicular to the side which is immediately adjacent to the second side of the first patch element has a length of 650 ⁇ m.
  • the distance between the feed line 10 and the first side of the first patch element 12 and the first side of the second patch element 13 is 750 ⁇ .
  • Power divider 11 and the width of the second branch of the power divider 11 are each 100 ⁇ .
  • the distance between the first patch element 12 and the second patch element 13 is 100 ⁇ and the distance between the first patch element 12 and the first resonator 14, and the distance between the second patch element 13 and the second resonator 15 is 150 ⁇ each.
  • the patch antenna has a center frequency of about 79 GHz and a bandwidth of at least 4 GHz. As a result, a high resolution or separation capability is achieved.
  • FIG. 2 shows a typical emission diagram of the invention
  • Patch antenna wherein the patch elements are arranged vertically one above the other. Due to the vertical arrangement of the elements, the antenna properties are influenced in such a way that the radiation 22 is focused in the elevation direction and the radiation 21 in the azimuth direction is concentrated
  • the patch antenna has a high bandwidth. Due to the design of the power supply and the optimized dimensions of the patch elements, no additional matching structures such as slots in the patch elements or lambda quarter transformation lines are required.
  • the patch antenna is robust in the matching behavior with respect to manufacturing tolerances occurring, for example the patch elements, the resonators or the distances between the patch element and the resonator or the distance between the first patch element and the second patch element.
  • FIG. 3 shows a patch antenna arrangement 40 of a first patch antenna 41 according to the invention and a second patch antenna 42 according to the invention.
  • the first patch antenna 41 and the second patch antenna 42 are included
  • the distance between the first patch antenna 41 and the second patch antenna 42 is for example 0.68 * lambda, where lambda describes the wavelength of the center frequency.
  • the center frequency is about 79 GHz.
  • the symmetrical design of the patch antenna arrangement 40 optimizes the angularization properties for direction estimation, in particular in the deterministic maximum likelihood method.
  • FIG. 4 shows a patch antenna system 50 for a radar sensor having two patch antenna arrays 51 and 52 acting as receive antennas and two individual patch antennas 53 and 54 acting as transmit antennas. Furthermore, a first S MD component 55 is provided which comprises a first high-frequency circuit for driving the first patch antenna arrangement 51 and the second patch antenna arrangement 52.
  • Patch antenna system 50 includes a second SMD component 56 that is compatible with the
  • Transmit antenna is connected and these drives. Due to the selected antenna geometry, a symmetrical arrangement of the receiving antennas in the sensor is possible.
  • the two SMD components 55 and 56 can also be combined to form a common component.

Landscapes

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

Abstract

L'invention concerne une antenne planaire qui possède un substrat plan (16), un premier résonateur (14), un deuxième résonateur (15) et un premier élément planaire (12). Le premier résonateur (14), le deuxième résonateur (15) et le premier élément planaire (12) sont disposés sur le substrat plan (16) en parallèle au plan de projection principal et le premier élément planaire (12) est disposé entre le premier résonateur (14) et le deuxième résonateur (15). L'élément est caractérisée en ce qu'un deuxième élément planaire (13) est disposé entre le premier résonateur (14) et le deuxième résonateur (15) à côté du premier élément planaire (12).
PCT/EP2015/067494 2014-09-25 2015-07-30 Antenne pour radar de proximité WO2016045830A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014219432.6 2014-09-25
DE102014219432.6A DE102014219432A1 (de) 2014-09-25 2014-09-25 Antenne für Nahbereichsradar

Publications (1)

Publication Number Publication Date
WO2016045830A1 true WO2016045830A1 (fr) 2016-03-31

Family

ID=53761397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/067494 WO2016045830A1 (fr) 2014-09-25 2015-07-30 Antenne pour radar de proximité

Country Status (2)

Country Link
DE (1) DE102014219432A1 (fr)
WO (1) WO2016045830A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112821043A (zh) * 2020-12-31 2021-05-18 Oppo广东移动通信有限公司 天线组件及电子设备
CN113169443A (zh) * 2018-11-22 2021-07-23 罗伯特·博世有限公司 用于雷达传感器的具有金属填充结构的电路板和用于制造用于雷达传感器的具有金属填充结构的电路板的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10770780B2 (en) * 2017-08-10 2020-09-08 Microelectronics Technology, Inc. Antenna apparatus and circuit board thereof
TWI711220B (zh) * 2019-10-01 2020-11-21 輝創電子股份有限公司 雷達天線裝置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266809A (en) * 1992-05-05 1993-11-10 Aerospatiale Thin broadband microstrip array antenna
EP1804335A1 (fr) * 2004-09-30 2007-07-04 Toto Ltd. Antenna microruban et detecteur de frequences elevees l'utilisant
JP2007267041A (ja) * 2006-03-28 2007-10-11 Toto Ltd マイクロストリップアンテナ及び高周波センサ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4192212B2 (ja) * 2004-01-28 2008-12-10 日本電波工業株式会社 マイクロストリップライン型の平面アレーアンテナ
US20130169503A1 (en) 2011-12-30 2013-07-04 Mohammad Fakharzadeh Jahromi Parasitic patch antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2266809A (en) * 1992-05-05 1993-11-10 Aerospatiale Thin broadband microstrip array antenna
EP1804335A1 (fr) * 2004-09-30 2007-07-04 Toto Ltd. Antenna microruban et detecteur de frequences elevees l'utilisant
JP2007267041A (ja) * 2006-03-28 2007-10-11 Toto Ltd マイクロストリップアンテナ及び高周波センサ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113169443A (zh) * 2018-11-22 2021-07-23 罗伯特·博世有限公司 用于雷达传感器的具有金属填充结构的电路板和用于制造用于雷达传感器的具有金属填充结构的电路板的方法
CN112821043A (zh) * 2020-12-31 2021-05-18 Oppo广东移动通信有限公司 天线组件及电子设备
CN112821043B (zh) * 2020-12-31 2023-09-22 Oppo广东移动通信有限公司 天线组件及电子设备

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Publication number Publication date
DE102014219432A1 (de) 2016-03-31

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