WO2007119289A1 - アンテナ装置またはその製造方法 - Google Patents
アンテナ装置またはその製造方法 Download PDFInfo
- Publication number
- WO2007119289A1 WO2007119289A1 PCT/JP2007/052981 JP2007052981W WO2007119289A1 WO 2007119289 A1 WO2007119289 A1 WO 2007119289A1 JP 2007052981 W JP2007052981 W JP 2007052981W WO 2007119289 A1 WO2007119289 A1 WO 2007119289A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- coupling
- depth
- choke
- hole
- Prior art date
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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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/18—Resonant slot antennas the slot being backed by, or formed in boundary wall of, a resonant cavity ; Open cavity antennas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49016—Antenna or wave energy "plumbing" making
Definitions
- the present invention relates to an antenna device in a millimeter wave band or a microwave band or a manufacturing method thereof.
- Patent Document 1 Japanese Patent Laid-Open No. 10-163737
- the antenna device capable of reducing the coupling amount between the transmission antenna and the reception antenna as compared with the conventional structure, or a method for manufacturing the antenna device The purpose is to obtain.
- An antenna device in a millimeter wave band or a microwave band includes a ground conductor, a first antenna disposed on the ground conductor and directly connected to a feeder line, and the ground conductor.
- a groove is formed between the antenna 1 and the second antenna 2 to reduce the amount of electromagnetic coupling between the first antenna and the second antenna, and the depth of the groove is
- the present invention is characterized by comprising a choke that is 0.15 times or more and less than 0.225 times the wavelength of a carrier wave.
- An antenna device in a millimeter wave band or a microwave band includes a ground conductor, a first antenna disposed on the ground conductor and directly connected to a feeder, and the ground conductor.
- a second antenna disposed on a body, connected to a power supply line different from the power supply line, and disposed at a distance capable of electromagnetically coupling with the first antenna;
- a groove is formed between the antenna and the second antenna to reduce the amount of electromagnetic coupling between the first antenna and the second antenna, and the depth of the groove depends on the wavelength of the carrier wave. Therefore, the amount of electromagnetic coupling between the first antenna and the second antenna can be reduced.
- FIG. 1 is a structural diagram showing an antenna apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional view showing the structure of the antenna device according to the first embodiment of the present invention.
- FIG. 3 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 using the width and depth of the choke 4 as parameters in the antenna device according to the first embodiment of the present invention. It is.
- FIG. 4 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 using the depth of the choke 4 as a parameter in the antenna device according to the first embodiment of the present invention. .
- FIG. 5 is a structural diagram showing an antenna apparatus according to Embodiment 2 of the present invention.
- FIG. 6 is a cross-sectional view showing the structure of the antenna device according to the second embodiment of the present invention.
- FIG. 7 shows chokes 4a and 4b in the antenna device according to the second embodiment of the present invention.
- FIG. 6 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 with the width and depth as parameters.
- FIG. 8 shows the amount of coupling between the first antenna 1 and the second antenna 2 with the depth and spacing of the chokes 4a and 4b as parameters in the antenna device according to the second embodiment of the present invention.
- FIG. 9 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 with the depth of the chokes 4a and 4b in the antenna device according to the second embodiment of the present invention as parameters. It is.
- FIG. 10 is a cross-sectional view showing a case where diffusion bonding is applied to the structure of the antenna device according to the first embodiment of the present invention.
- FIG. 11 is a cross-sectional view showing a case where diffusion bonding is applied to the structure of the antenna device according to the second embodiment of the present invention.
- FIG. 1 is a structural diagram showing an antenna apparatus according to Embodiment 1 of the present invention.
- the antenna device includes a first antenna 1, a second antenna 2, a ground conductor 3, and a choke 4 disposed between the first antenna 1 and the second antenna 2.
- the first antenna 1 is a transmitting antenna
- the second antenna 2 is a receiving antenna.
- FIG. 2 is a cross-sectional view showing the structure of the antenna device according to the first embodiment of the present invention.
- the distance between the first antenna 1 and the second antenna 2 is set to 2 when the wavelength of the carrier wave is selected. Note that the distance between the first antenna 1 and the second antenna 2 is not limited to an integral multiple of the wavelength.
- the first antenna 1 and the second antenna 2 are electromagnetically coupled. That is, for example, a part of the radio wave transmitted from the first antenna 1 that is a transmitting antenna is directly input to the second antenna 2 that is a receiving antenna. Therefore, a choke 4 is arranged between the first antenna 1 and the second antenna 2 to reduce the amount of coupling between the first antenna 1 and the second antenna 2, and generally the depth thereof. Is 0.25 ⁇ for the carrier wave length. However, when the choke 4 is installed, the amount of coupling decreases, but it may not be sufficient depending on the product specifications.
- the width (0.15 to 0.3 ⁇ ) and depth (0.1 to 0.3 ⁇ ) of the choke 4 were used as parameters to investigate the coupling amount.
- FIG. 3 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 using the width and depth of the choke 4 as parameters in the antenna device according to the first embodiment of the present invention. is there.
- the horizontal axis indicates the depth of the choke 4 and the vertical axis indicates the amount of coupling between the first antenna 1 and the second antenna 2.
- ⁇ indicates that the width of choke 4 is 0.15
- ⁇ indicates the width of choke 4 is 0.225 ⁇
- the width is 0.3 ⁇ .
- the first depth of the choke 4 is less than the 0.25 ⁇ , which was considered to be the minimum value for the depth of force, which was not very dependent on the width.
- the amount of coupling between the antenna 1 and the second antenna 2 is minimized.
- the amount of coupling is smaller than the case of 0.25 ⁇ , which was conventionally considered to be the minimum value in the range from 0.15 to less than 0.25 ⁇ .
- the present invention is effectively 0.2 The effect is below 25 ⁇ .
- the depth is approximately 0.6 to 0.9 mm in vacuum and air.
- first antenna 1 as a transmitting antenna and the second antenna 2 as a receiving antenna.
- One is coupling by surface current flowing on the ground conductor 3, and the other is coupling by electromagnetic waves propagating in space.
- the amount to cancel the coupling due to the surface current flowing on the ground conductor 3 should be smaller than when the depth of the choke 4 is 0.25 ⁇ . This is because the amount by which the coupling due to electromagnetic waves propagating in a certain force space is canceled or the combination of coupling due to surface current flowing on the ground conductor 3 and coupling due to electromagnetic waves propagating in space increases.
- FIG. 4 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 with the depth of the choke 4 in the antenna device according to the first embodiment of the present invention as a parameter. .
- the width of choke 4 is 0.225 mm.
- the horizontal axis represents the normalized frequency, and the vertical axis represents the amount of coupling between the first antenna 1 and the second antenna 2.
- ⁇ indicates that the choke 4 is not provided, ⁇ is the case where the choke 4 with a depth of 0.25 is provided, and the mouth is provided with the choke 4 with a depth of 0.2!
- a choke 4 having a depth of 0.25 is provided for a coupling amount of about 22 dB between the first antenna 1 and the second antenna 2 without the choke 4.
- the amount of coupling between the first antenna 1 and the second antenna 2 is reduced by about 4 dB.
- the choke 4 with a depth of 0.2 ⁇ is provided, the amount of coupling between the first antenna 1 and the second antenna 2 can be reduced by about 1 dB compared to when the choke 4 with a depth of 0.25 ⁇ is provided. There is.
- the horizontal axis is the normalized frequency.
- the center frequency is 76.5 GHz. Show.
- the ground conductor 3, the first antenna 1 disposed on the ground conductor 3 and directly connected to the feed line, and the ground conductor 3 disposed on the ground conductor 3 are different from the feed line.
- the second antenna 2 disposed at a distance that can be electromagnetically coupled to the first antenna 1 while being connected to the feeder line, A groove for reducing the electromagnetic coupling between the first antenna 1 and the second antenna 2 is formed, and the depth of the groove is not less than 0.15 times and less than 0.225 times the wave length of the carrier wave. Therefore, the amount of electromagnetic coupling between the first antenna 1 and the second antenna 2 can be reduced.
- the force described in the case where the number of the chokes 4 between the first antenna 1 and the second antenna 2 is one.
- the first antenna 1 and the second antenna 2 are the same.
- the case where the number of chokes 4 between antenna 2 is two will be described.
- the diagrams, symbols, and the like are the same as those in the first embodiment.
- FIG. 5 is a structural diagram showing an antenna apparatus according to Embodiment 2 of the present invention.
- the second embodiment has a force S and two chokes 4a and 4b disposed at a predetermined interval between the first antenna 1 and the second antenna 2.
- FIG. 6 is a cross-sectional view showing the structure of the antenna device according to the second embodiment of the present invention.
- Chokes 4 a and 4 b are arranged between the first antenna 1 and the second antenna 2 that reduce the amount of coupling between the first antenna 1 and the second antenna 2.
- the depth is 0.25 ⁇ , where ⁇ is the wavelength of the carrier wave.
- FIG. 7 shows the amount of coupling between the first antenna 1 and the second antenna 2 with the width and depth of the chokes 4a and 4b in the antenna device according to the second embodiment of the present invention as parameters. It is a figure.
- the horizontal axis shows the depth of the chokes 4a and 4b
- the vertical axis shows the first antenna 1 and the second antenna. This shows the amount of binding with Na2.
- ⁇ indicates the case where the width of the chokes 4a and 4b is 0.15 ⁇ , the ⁇ force S width of the chokes 4a and 4b S0.225 ⁇ , and the width of the rocker chokes 4a and 4b of 0.3 ⁇ .
- the distance between the choke 4a and the choke 4b is 0.375 mm from the center force of each other.
- the chokes 4a and 4b have a larger overall force with respect to the width of the choke 4a and 4b.
- the amount of coupling between the first antenna 1 and the second antenna 2 is reduced.
- the amount of coupling between the first antenna 1 and the second antenna 2 is the smallest at 0.175 ⁇ , which is not the conventional minimum value of 0.25 ⁇ .
- the overall coupling amount between the first antenna 1 and the second antenna 2 is small.
- the coupling amount when the depth of the chokes 4a and 4b is 0.175 is other than The value is smaller than in the case of.
- the amount of coupling is smaller than the case of 0.25 mm, which was conventionally considered to be the minimum value in the range of 0.125 ⁇ or more to less than 0.25 ⁇ .
- the present invention is effectively effective at 0.225 ⁇ or less.
- the depth is about 0.5 to 0.9 mm in vacuum and air.
- the depth is about 0.6 to 0.6 in the case of vacuum or air when considered in the millimeter wave band of 76 GHz band in the range of 0.15 to 0.2. ⁇ 0.8mm.
- the depth force of chokes 4a and 4b is not 0.25 ⁇ , which has been considered in the past, but is 0.175. The reason is the same as in the first embodiment except that the values are different.
- FIG. 8 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 using the depth and interval of the chokes 4a and 4b in the antenna device according to the second embodiment of the present invention as parameters. is there.
- the horizontal axis indicates the depth of the chokes 4a and 4b
- the vertical axis indicates the coupling amount between the first antenna 1 and the second antenna 2.
- ⁇ indicates that the interval between the chokes 4a and 4b is 0.25
- ⁇ indicates that the interval between the chokes 4a and 4b is 0.375 ⁇
- the interval between the chokes 4a and 4b is 0.5 ⁇ . .
- the distance between the chokes 4a and 4b in FIG. if the depth of chokes 4a and 4b is 0.175, the distance between chokes 4a and 4b is 0.25. The amount of coupling between the first antenna 1 and the second antenna 2 was reduced.
- FIG. 9 is a diagram showing the amount of coupling between the first antenna 1 and the second antenna 2 using the depth of the chokes 4a and 4b in the antenna device according to the second embodiment of the present invention as a parameter. is there .
- the widths of the chokes 4a and 4b are 0.225 ⁇ and the interval is 0.25 ⁇ .
- the horizontal axis represents the normalized frequency, and the vertical axis represents the amount of coupling between the first antenna 1 and the second antenna 2.
- ⁇ indicates that the chokes 4a and 4b are not provided, ⁇ is the case where the chokes 4a and 4b with a depth of 0.25 are provided, and the case where the chokes 4a and 4b with a depth of 0.175 are provided.
- the choke 4a having a depth of 0.25 with respect to a coupling amount of about 22 dB between the first antenna 1 and the second antenna 2 without the chokes 4a and 4b.
- the amount of coupling between the first antenna 1 and the second antenna 2 is reduced by about 10 dB.
- the chokes 4a and 4b with a depth of 0.175 ⁇ are provided, the first antenna 1 and the second antenna 2 with a depth of 15 to 20dB are compared to the case with the choke 4 with a depth of 0.25 ⁇ . There is an effect of reducing the amount of coupling.
- the horizontal axis is a normalized frequency.
- the center frequency is 76.5 GHz. Show.
- the electromagnetic waves between the first antenna 1 and the second antenna 2 are further increased by providing a plurality of chokes 4a and 4b in parallel to the first embodiment.
- the amount of binding can be reduced.
- the amount of electromagnetic coupling between the first antenna 1 and the second antenna 2 can be reduced more conspicuously by setting the distance between the chokes 4a and 4b to 0.25.
- the frequency is 76 GHz, so the length of one wavelength is about 4 mm in vacuum or in the atmosphere.
- the depth force O. 1 mm of the chokes 4, 4a, 4b shown in the first and second embodiments is changed, it corresponds to 0.025 ⁇ . Therefore, dimensional tolerance on the manufacturing side while keeping the amount of coupling to a minimum. Therefore, it is necessary to keep the dimensional tolerance of the depth of chokes 4, 4a and 4b below about ⁇ 0.05.
- the antenna device having the shape of the first and second embodiments, if it is made of aluminum die casting, cutting work is required later, which causes a problem in terms of cost.
- the dimensional error of the steel plate itself is 0.05.
- the waveguides of the first antenna 1 and the second antenna 2 have a large leakage as electromagnetic energy and have a problem in performance. If the entire waveguide is welded or brazed, there will be problems in terms of dimensional changes and costs due to welding or brazing.
- Diffusion bonding is a bonding method in which two members are heated and pressed to make metallographic integration using the diffusion phenomenon between the bonding surfaces. When approached, a metal bond is formed. Therefore, in principle, if two metals are brought close together, bonding becomes possible. This joint is less deformed by the joint and is metallurgically integrated so that leakage as electromagnetic energy is small even if a hole is made in the steel plate and a waveguide is formed in the stacking direction! /, Have an advantage.
- FIG. 10 is a cross-sectional view showing a case where diffusion bonding is applied to the structure of the antenna device according to the first embodiment of the present invention.
- FIG. 11 is a cross-sectional view showing a case where diffusion bonding is applied to the structure of the antenna device according to the second embodiment of the present invention.
- a first conductor 5a having a ground conductor 3 and a hole la of the first antenna, a hole 2a of the second antenna, and a hole 4c of the choke 4 is provided on the first steel plate 5a.
- the second steel plate 5b provided with the hole portion la of the antenna 1 and the hole portion 2a of the second antenna is joined by diffusion bonding.
- the depths of the chalks 4, 4 a, 4 b are formed with the thickness of one steel plate.
- the frequency is 76 GHz
- the plate thickness is about 0.8 mm in the first embodiment and about 0.7 mm in the second embodiment.
- a plurality of steel plates may be stacked so as to match the optimum values of the grooves of the chokes 4, 4a, 4b.
- the first steel plate 5a provided with the ground conductor 3, the hole portion of the first antenna 1, the hole portion of the second antenna 2, and the respective hole portions for the choke grooves 4, 4a, 4b;
- the first steel plate is joined by diffusion bonding, and a waveguide la or a hole 1a of the first antenna 1 is provided, and a waveguide 2 other than the waveguide or a hole 2a of the second antenna 2 is provided.
- the second steel plate 5b is provided, the first antenna 1 and the second antenna 2 are connected to the first waveguide 1 connected to the waveguide with little leakage while reducing the amount of electromagnetic coupling between the first antenna 1 and the second antenna 2.
- An antenna 1 and a second antenna 2 can be provided.
- the antenna device and the method for manufacturing the antenna device according to the present invention are useful as an invention that can further reduce the amount of coupling between the transmitting antenna and the receiving antenna.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007534405A JP4574679B2 (ja) | 2006-03-16 | 2007-02-19 | アンテナ装置またはその製造方法 |
CN2007800008073A CN101341629B (zh) | 2006-03-16 | 2007-02-19 | 天线装置及其制造方法 |
US11/995,340 US7928923B2 (en) | 2006-03-16 | 2007-02-19 | Antenna assembly and method for manufacturing the same |
EP07714507A EP2003729B1 (en) | 2006-03-16 | 2007-02-19 | Antenna assembly and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006072690 | 2006-03-16 | ||
JP2006-072690 | 2006-03-16 |
Publications (1)
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WO2007119289A1 true WO2007119289A1 (ja) | 2007-10-25 |
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Family Applications (1)
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PCT/JP2007/052981 WO2007119289A1 (ja) | 2006-03-16 | 2007-02-19 | アンテナ装置またはその製造方法 |
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Country | Link |
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US (1) | US7928923B2 (ja) |
EP (1) | EP2003729B1 (ja) |
JP (1) | JP4574679B2 (ja) |
CN (1) | CN101341629B (ja) |
WO (1) | WO2007119289A1 (ja) |
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JP2014197811A (ja) * | 2013-03-29 | 2014-10-16 | 富士通テン株式会社 | アンテナ装置およびレーダ装置 |
JP2017175595A (ja) * | 2016-03-17 | 2017-09-28 | 住友電気工業株式会社 | アンテナおよびレーダ |
JP2018519734A (ja) * | 2015-06-30 | 2018-07-19 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | アンテナアレイおよびネットワークデバイス |
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2007
- 2007-02-19 CN CN2007800008073A patent/CN101341629B/zh active Active
- 2007-02-19 JP JP2007534405A patent/JP4574679B2/ja active Active
- 2007-02-19 EP EP07714507A patent/EP2003729B1/en active Active
- 2007-02-19 WO PCT/JP2007/052981 patent/WO2007119289A1/ja active Application Filing
- 2007-02-19 US US11/995,340 patent/US7928923B2/en active Active
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JPH10163737A (ja) | 1996-12-03 | 1998-06-19 | Yagi Antenna Co Ltd | 衛星受信用アンテナの一次放射器及び衛星受信用コンバータ |
JPH10308628A (ja) * | 1997-03-06 | 1998-11-17 | Matsushita Electric Ind Co Ltd | 複一次放射器とデュアルビームアンテナ |
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Non-Patent Citations (1)
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009111463A (ja) * | 2007-10-26 | 2009-05-21 | Mitsubishi Electric Corp | アンテナ装置 |
JP2014197811A (ja) * | 2013-03-29 | 2014-10-16 | 富士通テン株式会社 | アンテナ装置およびレーダ装置 |
JP2018519734A (ja) * | 2015-06-30 | 2018-07-19 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | アンテナアレイおよびネットワークデバイス |
JP2017175595A (ja) * | 2016-03-17 | 2017-09-28 | 住友電気工業株式会社 | アンテナおよびレーダ |
WO2020241631A1 (ja) * | 2019-05-30 | 2020-12-03 | 株式会社ソニー・インタラクティブエンタテインメント | アンテナユニット、及び通信機器 |
JPWO2020241631A1 (ja) * | 2019-05-30 | 2021-10-14 | 株式会社ソニー・インタラクティブエンタテインメント | アンテナユニット、及び通信機器 |
JP7098060B2 (ja) | 2019-05-30 | 2022-07-08 | 株式会社ソニー・インタラクティブエンタテインメント | アンテナユニット、及び通信機器 |
US12046814B2 (en) | 2019-05-30 | 2024-07-23 | Sony Interactive Entertainment Inc. | Antenna unit and communication equipment |
Also Published As
Publication number | Publication date |
---|---|
EP2003729A9 (en) | 2009-04-15 |
EP2003729A4 (en) | 2010-04-07 |
JP4574679B2 (ja) | 2010-11-04 |
US7928923B2 (en) | 2011-04-19 |
CN101341629B (zh) | 2012-07-18 |
CN101341629A (zh) | 2009-01-07 |
JPWO2007119289A1 (ja) | 2009-08-27 |
US20080224938A1 (en) | 2008-09-18 |
EP2003729B1 (en) | 2012-11-28 |
EP2003729A2 (en) | 2008-12-17 |
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