WO2019016995A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

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Publication number
WO2019016995A1
WO2019016995A1 PCT/JP2018/006919 JP2018006919W WO2019016995A1 WO 2019016995 A1 WO2019016995 A1 WO 2019016995A1 JP 2018006919 W JP2018006919 W JP 2018006919W WO 2019016995 A1 WO2019016995 A1 WO 2019016995A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
radar
wireless communication
circuit
electronic device
Prior art date
Application number
PCT/JP2018/006919
Other languages
English (en)
Japanese (ja)
Inventor
克利 小原
明秀 安達
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Publication of WO2019016995A1 publication Critical patent/WO2019016995A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • 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
    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Definitions

  • the present invention relates to electronic devices.
  • an antenna substrate provided with a first antenna for transmitting and receiving radar waves, a second antenna for communicating with a portable terminal, and an electronic component for processing a signal transmitted and received by the first antenna
  • a vehicle antenna unit has been proposed.
  • the first antenna, the second antenna, and the electronic component are provided on the same antenna substrate, which causes a problem of an increase in size.
  • the present invention has been made in view of the above problems, and has an object to miniaturize an electronic device having a wireless communication function and a radar function.
  • the electronic device includes a circuit board, a radar circuit provided on the surface of the circuit board for performing transmission / reception processing of a signal for radar, and a surface of the circuit board provided with a signal for wireless communication.
  • the electronic device provided with the wireless communication function and the radar function can be miniaturized.
  • FIG. 2 is a diagram illustrating an example of an electronic device. The figure which shows the modification of an electronic device. The figure which shows the modification of an electronic device. The figure which shows the modification of an electronic device. The figure which shows the modification of an electronic device. The figure which shows the modification of an electronic device.
  • the electronic device 100 is an electronic device provided with a radar function and a wireless communication function.
  • the electronic device 100 may be a radar device with a wireless communication function whose main function is a radar function, or may be a wireless communication device with a radar function whose main function is a wireless communication function. Further, the electronic device 100 may be an electronic device whose main function is a function other than the radar function and the wireless communication function.
  • FIG. 1 is a view showing an example of the electronic device 100.
  • the left view of FIG. 1 is a side view of the electronic device 100
  • the right view of FIG. 1 is a plan view of the electronic device 100.
  • the electronic device 100 of FIG. 1 includes a circuit board 1, a radar circuit 2, a wireless communication circuit 3, a resin layer 4, an antenna substrate 5, a radar antenna 6, a wireless communication antenna 7, connection portions 8 and 9. And.
  • the upper surface in the side view is referred to as the front surface
  • the lower surface is referred to as the back surface.
  • the circuit board 1 is a printed circuit board made of resin or ceramic.
  • the circuit board 1 is provided with a radar circuit 2, a wireless communication circuit 3, and a resin layer 4 on the surface.
  • the radar circuit 2 is a circuit (a radar module) that performs transmission / reception processing of a signal for radar, and is provided on the surface of the circuit board 1.
  • the radar circuit 2 is sealed with a resin layer 4 on the circuit board 1.
  • the radar circuit 2 includes a transmission circuit, a reception circuit, and a signal processing circuit.
  • the transmission circuit performs transmission processing on the transmission signal input from the signal processing circuit, generates a radar signal (electric signal) according to the transmission signal, and generates a radar wave (radio wave) according to the radar signal as a radar antenna.
  • Radiate 6 The reception circuit performs reception processing on the radar signal input from the radar antenna 6 and generates a reception signal according to the radar signal.
  • the signal processing circuit performs generation of a transmission signal, protocol processing on a reception signal input from the reception circuit, control of transmission / reception timing of a radar wave, and the like.
  • a centimeter wave SHF: Super High Frequency
  • a millimeter wave EHF: Extremely High Frequency
  • a terahertz wave THz
  • the wireless communication circuit 3 is a circuit that performs transmission / reception processing of a signal for wireless communication, and is provided on the surface of the circuit board 1.
  • the wireless communication circuit 3 is sealed with a resin layer 4 on the circuit board 1.
  • the wireless communication circuit 3 includes a transmission circuit, a reception circuit, and a signal processing circuit.
  • the transmission circuit performs transmission processing on the transmission signal input from the signal processing circuit, generates a wireless communication signal (electric signal) corresponding to the transmission signal, and generates a wireless signal (radio wave) corresponding to the wireless communication signal.
  • the radio communication antenna 7 is caused to emit radiation.
  • the reception circuit performs reception processing on the wireless communication signal input from the wireless communication antenna 7 and generates a reception signal according to the wireless communication signal.
  • the signal processing circuit generates a transmission signal, performs protocol processing on a reception signal input from the reception circuit, and controls transmission / reception timing of a radio signal.
  • the standard of wireless communication executed by the wireless communication circuit 3 is, for example, Bluetooth (registered trademark), BLE (Bluetooth Low Energy), Wi-Fi (registered trademark), or Zigbee (registered trademark), but is not limited thereto. Absent.
  • the radar circuit 2 and the wireless communication circuit 3 may be ICs (Integrated Circuits) independent of one another as in the example of FIG. 1 or may be one integrated IC.
  • the radar circuit 2 and the wireless communication circuit 3 may also include discrete elements mounted on the surface of the circuit board 1 and a wiring pattern formed on the surface of the circuit board 1.
  • the resin layer 4 is provided on the surface of the circuit board 1 and seals the radar circuit 2 and the wireless communication circuit 3 on the circuit board 1.
  • the resin layer 4 is formed of an insulating resin such as a glass epoxy resin.
  • the resin layer 4 may be mounted on the surface of the circuit board 1 in a state in which the radar circuit 2 and the wireless communication circuit 3 are sealed in advance, or the radar circuit 2 and wireless communication previously mounted on the surface of the circuit board 1 It may be formed to cover the circuit 3.
  • the resin layer 4 is provided with the antenna substrate 5 on the surface. For this reason, the surface of the resin layer 4 is preferably flat. Thus, the antenna substrate 5 can be easily fixed to the surface of the resin layer 4.
  • the antenna substrate 5 (first antenna substrate) is a printed circuit board made of resin or ceramic, and is provided on the surface of the resin layer 4.
  • the antenna substrate 5 is adhered to the surface of the resin layer 4 by an adhesive, for example.
  • the antenna substrate 5 is provided with the radar antenna 6 and the wireless communication antenna 7 on the surface. Therefore, the antenna substrate 5 is preferably a ceramic substrate having a low dielectric constant. As a result, the pattern accuracy of the radar antenna 6 and the wireless communication antenna 7 formed on the surface can be improved, and the loss of the signal by the antenna substrate 5 can be suppressed.
  • the radar antenna 6 is an antenna provided on the surface of the antenna substrate 5 for transmitting and receiving radar waves, and is electrically connected to the radar circuit 2 through the connection portion 8. Specifically, the radar antenna 6 radiates a radar wave (radio wave) according to the radar signal input from the radar circuit 2 (transmission circuit), and the radar circuit 2 (receives the radar signal according to the received radar wave) Input to the circuit).
  • a radar wave radio wave
  • the radar antenna 6 is formed of a conductive material such as silver, copper, aluminum, and carbon. Although the radar antenna 6 is a rectangular planar antenna in the example of FIG. 1, it may be a circular planar antenna. The shape and size of the radar antenna 6 are determined according to the wavelength (frequency) of the radar wave transmitted and received by the radar antenna 6.
  • a plurality of radar antennas 6 are provided on the surface of the antenna substrate 5 as in the example of FIG. Desired directivity can be given to the radar antenna 6 by adjusting the arrangement of the plurality of radar antennas 6.
  • the number of radar antennas 6 provided on the surface of the antenna substrate 5 can be arbitrarily designed.
  • the radar antenna 6 can be disposed at an arbitrary position of the antenna substrate 5, but as shown in the example of FIG. 1, the radar antenna 6 is preferably provided at the center of the antenna substrate 5. Thereby, as described later, the area required for the antenna substrate 5 can be reduced. Further, the distance between the radar antenna 6 and the radar circuit 2 can be easily shortened, and when using a millimeter wave or a terahertz wave, it is easy to suppress a decrease in accuracy due to a phase shift.
  • the wireless communication antenna 7 is an antenna provided on the surface of the antenna substrate 5 to transmit and receive a wireless signal, and is electrically connected to the wireless communication circuit 3 through the connection unit 9. Specifically, the wireless communication antenna 7 radiates a wireless signal (radio wave) according to the wireless communication signal input from the wireless communication circuit 3 (transmission circuit), and wirelessly transmits a wireless communication signal according to the received wireless signal. Input to the communication circuit 2 (reception circuit).
  • the wireless communication antenna 7 is formed of a conductive material such as silver, copper, aluminum, and carbon.
  • the wireless communication antenna 7 is a spiral planar antenna, but may be a meander planar antenna.
  • the shape and size of the wireless communication antenna 7 are determined according to the wavelength (frequency) of a wireless signal transmitted and received by the wireless communication antenna 7.
  • a signal used for wireless communication a signal having a frequency lower than that of a signal used for a radar wave is used, so the length dimension required for the wireless communication antenna 7 tends to be long.
  • the number of wireless communication antennas 7 provided on the surface of the antenna substrate 5 can be designed arbitrarily. Further, the wireless communication antenna 7 can be disposed at an arbitrary position of the antenna substrate 5, but as shown in the example of FIG. 1, the wireless communication antenna 7 is preferably provided at the outer peripheral portion of the antenna substrate 5. As a result, as shown in the example of FIG. 1, the radar antenna 6 can be provided inside the wireless communication antenna 7 (the central portion of the antenna substrate 5). Therefore, the radar antenna 6 and the wireless communication antenna 7 can be disposed on the surface of the antenna substrate 5 efficiently, that is, the surplus space on the surface of the antenna substrate 5 is reduced. As a result, the area required for the antenna substrate 5 can be reduced, and the electronic device 100 can be miniaturized.
  • the connection unit 8 electrically connects the radar circuit 2 and the radar antenna 6.
  • the radar antenna 6 receives a radar signal from the radar circuit 2 (transmission circuit) via the connection unit 8.
  • the radar antenna 6 also inputs a radar signal to the radar circuit 2 (reception circuit) via the connection unit 8.
  • the connection portion 8 is formed of a conductive material such as silver, copper, aluminum, and carbon.
  • connection portion 8 is electrically connected by solder or a conductive adhesive to the through via provided in the resin layer 4 and the through via provided in the antenna substrate 5.
  • the through via referred to here is one obtained by applying or embedding a conductive material on the inner surface of the through hole provided in the substrate.
  • the connection portion 8 may be formed using a columnar metal member embedded in the resin layer 4 instead of the through via provided in the resin layer 4 or provided on the side surface of the resin layer 4 and the antenna substrate 5 It may be formed by electrically connecting the side electrodes. Further, the connection portion 8 may be formed by electrically connecting the through via of the resin layer 4 and the side electrode of the antenna substrate 5, or the side electrode of the resin layer 4 and the through via of the antenna substrate 5 may be electrically It may form by connecting.
  • connection unit 9 electrically connects the wireless communication circuit 3 and the wireless communication antenna 7.
  • the wireless communication antenna 7 receives a wireless communication signal from the wireless communication circuit 3 (transmission circuit) via the connection unit 9. Further, the wireless communication antenna 7 inputs a wireless communication signal to the wireless communication circuit 3 (reception circuit) via the connection unit 9.
  • the connection portion 9 is formed of a conductive material such as silver, copper, aluminum, and carbon.
  • connection portion 9 is electrically connected by solder or a conductive adhesive to the through via provided in the resin layer 4 and the through via provided in the antenna substrate 5.
  • the connection portion 9 may be formed using a columnar metal member embedded in the resin layer 4 instead of the through via provided in the resin layer 4 or provided on the side surface of the resin layer 4 and the antenna substrate 5 It may be formed by electrically connecting the side electrodes. Further, the connection portion 9 may be formed by electrically connecting the through via of the resin layer 4 and the side electrode of the antenna substrate 5, or the side electrode of the resin layer 4 and the through via of the antenna substrate 5 are electrically It may form by connecting.
  • the circuit board 1 and the antenna board 5 are provided.
  • the area required for can be reduced.
  • the antenna substrate 5 is provided on the surface of the resin layer 4, a complex structure for arranging the radar circuit 2 and the wireless communication circuit 3 and the radar antenna 6 and the wireless communication antenna 7 in layers one above the other. That is, the multistage structure of the substrate via the spacer and the like is not necessary. That is, the structure of the electronic device 100 can be simplified. As a result, the electronic device 100 provided with the wireless communication function and the radar function can be miniaturized.
  • the radar circuit 2 and the wireless communication circuit 3 are sealed by the resin layer 4, protection of the radar circuit 2 and the wireless communication circuit 3 is facilitated. Further, as described above, the structure of the electronic device 100 can be simplified. This makes the electronic device 100 easy to handle.
  • FIGS. 2 to 5 are diagrams showing a modification of the electronic device 100.
  • FIG. The left views of FIGS. 2 to 5 are side views of the electronic device 100, and the right views of FIGS. 2 to 5 are plan views of the electronic device 100.
  • the wireless communication antenna 7 is provided on the back surface of the antenna substrate 5.
  • the other configuration of the electronic device 100 of FIG. 2 is similar to that of FIG. 1 and the electronic device 100.
  • the electronic device 100 can be miniaturized and easy to handle.
  • the radar antenna 6 may be provided on the back surface of the antenna substrate 5, and the wireless communication antenna 7 may be provided on the surface of the antenna substrate 5. Alternatively, both the radar antenna 6 and the wireless communication antenna 7 may be provided on the back surface of the antenna substrate 5. In any case, the same effect as the electronic device 100 of FIG. 2 can be obtained.
  • the wireless communication antenna 7 is provided on the back surface of the circuit board 1.
  • the other configuration of the electronic device 100 of FIG. 3 is similar to that of FIG. 1 and the electronic device 100.
  • the electronic device 100 can be miniaturized and easy to handle. Further, the distance between the radar antenna 6 and the wireless communication antenna 7 is increased, and the radar antenna 6 and the wireless communication antenna 7 are separated by the circuit board 1, the resin layer 4, and the antenna substrate 5. Thereby, the radio wave interference between the radar antenna 6 and the wireless communication antenna 7 is reduced, so that the radar antenna 6 and the wireless communication antenna 7 are opposed to each other while suppressing the deterioration of the radar performance and the wireless communication quality by the radio wave interference. It can be arranged. That is, the radar antenna 6 can be disposed at the central portion of the antenna substrate 5, and the wireless communication antenna 7 can be disposed at the central portion of the circuit substrate 1. As a result, the area required for the antenna substrate 5 and the circuit substrate 1 can be further reduced, and the electronic device 100 can be further miniaturized.
  • the radar antenna 6 may be provided on the back surface of the circuit board 1, and the wireless communication antenna 7 may be provided on the front surface of the antenna substrate 5.
  • one of the radar antenna 6 and the wireless communication antenna 7 may be provided on the back surface of the circuit board 1, and the other may be provided on the back surface of the antenna substrate 5. In any case, the same effect as the electronic device 100 of FIG. 3 can be obtained.
  • the antenna substrate 10 (second antenna substrate) is provided on the surface of the resin layer 4, the radar antenna 6 is provided on the surface of the antenna substrate 5, and the wireless communication antenna 7 of meander shape is the antenna substrate It is provided on the surface of ten.
  • the antenna substrate 10 is disposed apart from the antenna substrate 5.
  • the other configuration of the electronic device 100 of FIG. 4 is the same as that of FIG. 1 and the electronic device 100.
  • the electronic device 100 can be miniaturized and easy to handle.
  • the distance between the radar antenna 6 and the wireless communication antenna 7 is increased, and the antenna substrate 5 provided with the radar antenna 6 and the antenna substrate 10 provided with the wireless communication antenna 7 are separated by a gap. It is placed apart. As a result, radio wave interference between the radar antenna 6 and the wireless communication antenna 7 is reduced, so that it is possible to suppress the deterioration of the radar performance and the radio communication quality due to the radio wave interference.
  • the radar antenna 6 may be provided on the back surface of the antenna substrate 5, and the wireless communication antenna 7 may be provided on the back surface of the antenna substrate 10. In any case, the same effect as the electronic device 100 of FIG. 4 can be obtained.
  • the electronic device 100 of FIG. 5 does not include the antenna substrate 5, and the radar antenna 6 and the wireless communication antenna 7 are provided on the surface of the resin layer 4.
  • the other configuration of the electronic device 100 of FIG. 5 is similar to that of FIG. 1 and the electronic device 100.
  • the electronic device 100 can be miniaturized and easy to handle. Further, since the antenna substrate 5 is not necessary, the electronic device 100 can be further miniaturized, and the manufacturing cost can be reduced.
  • the radar antenna 6 and the wireless communication antenna 7 can be disposed at opposing positions while suppressing the deterioration of the radar performance and the wireless communication quality due to radio wave interference. That is, one of the radar antenna 6 and the wireless communication antenna 7 can be disposed at the central portion of the resin layer 4, and the other can be disposed at the central portion of the circuit board 1. As a result, the area required for the resin layer 4 and the circuit board 1 can be further reduced, and the electronic device 100 can be further miniaturized.
  • Circuit board 2 Radar circuit 3: Wireless communication circuit 4: Resin layer 5: Antenna board 6: Radar antenna 7: Wireless communication antenna 8, 9: Connection part 10: Antenna board 100: Electronic device

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transceivers (AREA)

Abstract

Un dispositif électronique selon un mode de réalisation de la présente invention comprend : une carte de circuit imprimé; un circuit radar qui est disposé sur une surface de la carte de circuit imprimé et effectue un traitement de transmission et de réception de signaux pour un radar; un circuit de communication sans fil qui est disposé sur la surface de la carte de circuit imprimé et effectue un traitement de transmission et de réception de signaux de communication sans fil; une couche de résine pour sceller le circuit radar et le circuit de communication sans fil; un premier panneau d'antenne disposé sur la surface de la couche de résine; une antenne radar connectée au circuit radar; et une antenne de communication sans fil connectée au circuit de communication sans fil. L'antenne radar et/ou l'antenne de communication sans fil est fournie au premier panneau d'antenne.
PCT/JP2018/006919 2017-07-18 2018-02-26 Dispositif électronique WO2019016995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-138848 2017-07-18
JP2017138848A JP2020161853A (ja) 2017-07-18 2017-07-18 電子装置

Publications (1)

Publication Number Publication Date
WO2019016995A1 true WO2019016995A1 (fr) 2019-01-24

Family

ID=65015071

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/006919 WO2019016995A1 (fr) 2017-07-18 2018-02-26 Dispositif électronique

Country Status (2)

Country Link
JP (1) JP2020161853A (fr)
WO (1) WO2019016995A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002252515A (ja) * 2001-02-22 2002-09-06 Murata Mfg Co Ltd アンテナ装置
JP2007129304A (ja) * 2005-11-01 2007-05-24 Taiyo Yuden Co Ltd 高周波無線モジュール
JP2016197061A (ja) * 2015-04-03 2016-11-24 株式会社日本自動車部品総合研究所 車両用アンテナユニット、方向推定システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002252515A (ja) * 2001-02-22 2002-09-06 Murata Mfg Co Ltd アンテナ装置
JP2007129304A (ja) * 2005-11-01 2007-05-24 Taiyo Yuden Co Ltd 高周波無線モジュール
JP2016197061A (ja) * 2015-04-03 2016-11-24 株式会社日本自動車部品総合研究所 車両用アンテナユニット、方向推定システム

Also Published As

Publication number Publication date
JP2020161853A (ja) 2020-10-01

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