WO2006098310A1 - マイクロストリップアンテナ - Google Patents
マイクロストリップアンテナ Download PDFInfo
- Publication number
- WO2006098310A1 WO2006098310A1 PCT/JP2006/304986 JP2006304986W WO2006098310A1 WO 2006098310 A1 WO2006098310 A1 WO 2006098310A1 JP 2006304986 W JP2006304986 W JP 2006304986W WO 2006098310 A1 WO2006098310 A1 WO 2006098310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductor
- circuit member
- electric circuit
- dielectric substrate
- ground
- Prior art date
Links
Classifications
-
- 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
-
- 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 present invention relates to a configuration of na.
- a microstrip antenna has a thin antenna and is lightweight, and has a simple and clear structure.
- microstrip antennas are widely used for mobile station antennas mounted on automobiles, satellite broadcast receiving antennas, satellite mounted antennas, and the like.
- FIG. 1 and FIG. 2 are a front view and a side sectional view showing an outline of a conventional microstrip antenna.
- a ground conductor (12) is affixed to one surface of a flat dielectric substrate (11), and a radiation conductor (13) with a smaller area than the dielectric substrate (11) is affixed to the other surface. Has been.
- the electric circuit member (20) When a small electric circuit member (20) such as a wireless IC chip is directly connected to this without using a coaxial cable or the like, the electric circuit member (20) is arranged on the ground conductor (12) side, and the electric circuit member Connect the negative ground plane (21) of (20) to the ground conductor (12) of the microstrip antenna.
- the positive terminal (22) of the electric circuit member (20) that transmits an electric signal or microwave in pairs with the ground plane (21) passes through the hole (14) provided in the ground conductor (12). By passing through, it passes through the dielectric substrate (11) that does not contact the ground conductor (12) and is connected to the radiation conductor (13).
- FIGS. 3 and 4 are a front view and a side sectional view showing an outline of a conventional microstrip antenna.
- the electric circuit member (20) in this example has a grounding surface insulated, and has a grounding terminal (23) instead of the grounding surface (21) as shown in FIG.
- the electric circuit member (20) is arranged on the ground conductor (12) side. It is.
- the ground terminal (23) of the electric circuit member (20) is connected to the ground conductor (12) of the microstrip antenna.
- the microstrip antenna radiates radio waves from the radiation conductor (13) side, the ground conductor (12) faces the article when attached to the article.
- Patent Documents ! To 4 etc. in relation to the microstrip antenna.
- Patent Document 1 Japanese Patent Laid-Open No. 7-15230 “Microstrip Antenna with Solar Cell”
- Patent Document 2 JP 2000-82915 “Antenna Device”
- Patent Document 3 JP 2003-258539 “Microstrip Antenna”
- Patent Document 4 Japanese Unexamined Patent Application Publication No. 2004-112057 “Microstrip Antenna”
- the present invention provides a microstrip antenna that can be stably installed on an article that does not obstruct the electric circuit member even if the electric circuit member protrudes by being directly connected.
- the task is to do.
- a microstrip antenna of the present invention has the following configuration.
- a dielectric substrate a ground conductor provided on one surface thereof, a radiating conductor provided on the other surface having a smaller area than the dielectric substrate, and a terminal connected to each of the ground conductor and the radiating conductor.
- a substantially flat electric circuit member having a ground plane is disposed on the surface of the radiation conductor, and the ground plane of the electric circuit member is connected to the radiation conductor.
- the positive terminal of the electric circuit member It is characterized in that it is connected to the ground conductor through the dielectric substrate that is inserted through the hole provided in the body and does not contact the radiation conductor.
- a dielectric substrate a ground conductor provided on one surface thereof, a radiation conductor having a smaller area than the dielectric substrate provided on the other surface, and terminals connected to the ground conductor and the radiation conductor, respectively.
- a substantially flat electric circuit member having no ground plane is disposed on the surface of the radiation conductor so as to be insulated from the radiation conductor. Connect the grounding terminal to the radiating conductor, and connect the positive terminal of the electrical circuit member to the grounding conductor through the dielectric substrate that passes through the hole provided in the radiating conductor and does not contact the radiating conductor. May be.
- a substantially flat electric circuit member having no grounding surface is disposed on the surface of the radiation conductor so as to be insulated from the radiation conductor. Connect the positive terminal of the circuit member to the radiating conductor, and insert the ground terminal of the electric circuit member through the dielectric board that is inserted through the hole provided in the radiating conductor and does not contact the radiating conductor. You may connect to.
- the hole of the radiation conductor through which the terminal of the electric circuit member is inserted preferably has a position where the impedance of the microstrip antenna substantially matches the impedance of the electric circuit member.
- a matching circuit that matches the impedance of the microstrip antenna and the impedance of the electric circuit member may be connected to the electric circuit member.
- a matching circuit for reducing the impedance is connected to the electric circuit member and the impedance of the electric circuit member is larger than the impedance of the antenna at the edge of the radiation conductor, the impedance of the microstrip antenna and the electric circuit member is reduced. May be equalized. Further, even when the impedance of the electric circuit member is smaller than the impedance of the antenna at the edge of the radiation conductor, a matching circuit may be provided to match the impedance at a predetermined power supply point of the antenna.
- the dielectric substrate is made of cloth, and the ground conductor and the radiation conductor are made of conductive cloth. It may be applied to the microstrip antenna.
- the dielectric substrate may be made of felt cloth
- the ground conductor and the radiating conductor may be made of conductive cloth and applied to a cloth microstrip antenna.
- the electric circuit member is disposed on the radiation conductor side, even if the electric circuit member protrudes, it can be applied to an article that does not obstruct the electric circuit member. It can be installed stably.
- FIG. 1 is a front view showing an outline of a conventional microstrip antenna.
- FIG.3 Front view showing the outline of another conventional microstrip antenna
- FIG. 5 is a front view showing an outline of a microstrip antenna according to the present invention.
- FIG. 7 is a front view showing an outline of another microstrip antenna according to the present invention.
- FIG. 9 is a front view showing an outline of another microstrip antenna according to the present invention.
- FIG. 11 is a front view showing an outline of another microstrip antenna according to the present invention.
- FIG. 13 is a front view showing an outline of another microstrip antenna according to the present invention.
- FIGS. 5 and 6 are a front view and a side sectional view showing an embodiment of the microstrip antenna according to the present invention.
- the area of the radiation conductor (13) made of a metal plate is smaller than that of the ground conductor (12) made of a metal plate. Further, the ground conductor (12) and the dielectric substrate (11) usually have the same shape and the same area, but they do not necessarily have to be the same.
- the shapes of the dielectric substrate (11), the ground conductor (12), and the radiating conductor (13) are each basically flat, and are not limited to a disc shape, but may be a thin plate shape of a convex polygon.
- a square radiating conductor (13) may be combined with the disk-shaped dielectric substrate (11) and the ground conductor (12), or a disk-shaped dielectric substrate (11) and a ground conductor (12)
- a radiating conductor (13) may be combined.
- the radiation conductor (13) has a disk shape
- the dielectric substrate (11) and the ground conductor (12) have a rectangular flat plate shape.
- the dielectric substrate (11) and the ground conductor (12) are joined so that their surfaces coincide with each other, and the radiating conductor (13) is usually a dielectric so as not to protrude from the dielectric substrate (12). Join to the center of the board (11).
- the bonding method may be a conventionally known bonding using an adhesive, but the use of an adhesive causes a change in the dielectric constant.
- a method is used in which both surfaces of the dielectric substrate (11) are etched with a metal plate used for the ground conductor (12) and the radiation conductor (13), and a part of the metal plate is peeled off. Is used. As a result, this is the same as bonding the ground conductor (12) and the radiation conductor (13) to the dielectric substrate (11).
- the metal plate portion remaining after peeling becomes a radiating conductor, and the resonance frequency of the microstrip antenna depends on the size of the radiating conductor. Therefore, it is possible to adjust the antenna frequency by adjusting the part of the metal plate to be peeled.
- the metal plate constituting the ground conductor (12) and the radiation conductor (13) is preferably made of a metal having a small electric resistance.
- copper is used which is relatively inexpensive and has a sufficiently low electrical resistance.
- the dielectric substrate (11) Teflon (registered trademark), glass epoxy, polyethylene, ceramic dielectric, etc. can be used. The greater the relative dielectric constant, the shorter the wavelength of the radio wave inside the dielectric. This contributes to miniaturization of the microstrip antenna. Depending on design conditions, an insulator having a sufficiently low relative dielectric constant may be used.
- the dielectric substrate (11) is made of cloth or felt cloth, and the ground conductor (12) and the radiating conductor (13) are made of conductive cloth, a cloth-made microstrip antenna can be obtained.
- one thin through hole (14) is provided vertically on the dielectric substrate (11) to which the ground conductor (12) and the radiating conductor (13) are joined.
- the diameter of the hole (14) in the radiation conductor (13) is increased by peeling or the like.
- the position of the hole (14) serves as a feeding point in the microstrip antenna, a position where the impedance is substantially equal to the impedance of the electric circuit member (20) is preferred.
- the conductor (13) is disk-shaped, the impedance increases as the feeding point moves outward from the center of the radiating conductor (13). Theoretically, the impedance at the center is 0 ⁇ , and several hundred ⁇ at the edge of the radiating conductor (13). Since the microstrip antenna is often fed from a 50 ⁇ coaxial cable, for example, if the impedance is about 50 ⁇ , the position corresponding to about 1/3 of the radius from the center of the radiating conductor (12) Can be mentioned.
- a desired substantially flat electric circuit member (20) such as a wireless IC chip is disposed on the surface of the radiation conductor (13).
- the electric circuit member (20) in the illustrated example is provided with a ground plane (21).
- the ground plane (21) is joined to the radiating conductor (13) by the same method as described above, thereby electrically connecting the electric circuit member (20) and the radiating conductor (13).
- the positive terminal (22) of the electric circuit member (20) passes through the dielectric substrate (11) passing through the hole (14) provided in the radiation conductor (13) and not contacting the radiation conductor (13). Connect to the ground conductor (12). In the hole (14), the dielectric substrate (11) and the ground conductor (12) may be in contact with the brass terminal (22).
- the length of the positive terminal (22) is such that its end protrudes slightly from the ground conductor (12). Is preferable.
- the protruding end and the hole (14) are covered by soldering or the like.
- a method other than soldering may be used.
- a fixing method such as attaching a lid-like covering made of the same material as the ground conductor (12) in contact with the positive terminal (22) and the ground conductor (12) may be used.
- the characteristics of the microstrip antenna are examined.
- the electric circuit member (20) is arranged on the radiation conductor (13) side to The plus terminal (22) of the circuit member (20) was connected to the ground conductor (12) through the dielectric substrate (11).
- the radiation characteristics of the antenna are not greatly affected.
- connecting the positive terminal (22) to the ground conductor (12) and connecting the ground plane (21) or ground terminal to the radiating conductor (13) does not have a significant effect on the radiation characteristics.
- the present invention adopts the above-described configuration.
- 7 and 8 are a front view and a side sectional view showing another embodiment.
- the electric circuit member (20) in this example has a grounding surface insulated, and has a grounding terminal (23) instead of the grounding surface (21) as shown in FIG.
- the electric circuit member (20) is arranged on the side of the radiating conductor (13), the ground terminal (23) of the electric circuit member (20) is connected to the radiating conductor (13), and the electric circuit member (20
- the positive terminal (2 2) of) penetrates through the dielectric substrate (11) and is connected to the ground conductor (12), so that the radiation characteristics of the antenna are not impaired, and the protruding electric circuit member (20) It is possible to install the product stably on any item that does not make the product an obstacle.
- FIG. 9 and FIG. 10 are also a front view and a side sectional view showing another embodiment.
- the ground terminal (23) of the electrical circuit member (20) passes through the dielectric substrate (11) and is connected to the ground conductor (12), and the positive terminal (22) is connected to the radiation conductor (13).
- the electric circuit member (20) is disposed on the side of the radiation conductor (13), the radiation characteristics of the antenna are not impaired, and the protruding electric circuit member (20) is not obstructed. , Can be stably installed on such articles.
- 11 and 12 are also a front view and a side sectional view showing another embodiment.
- an insulating mold (24) is added to the embodiment shown in FIG. 5 and FIG.
- the insulating mold (24) molds the electric circuit member (20) on the radiation conductor (13), including its terminals, with silicon or the like.
- the insulating mold (24) can be applied to the other embodiments.
- FIG. 13 and FIG. 14 are also a front view and a side sectional view showing another embodiment.
- a matching circuit member (25) is added.
- the matching circuit is used to reduce the impedance of the electric circuit member (20) and match the impedance on the antenna side.
- a member (25) is provided.
- a matching circuit member (25) may be provided to match the impedance at a predetermined feeding point of the antenna. is there.
- the matching circuit member (25) is disposed below the electric circuit member (20), and both are electrically connected.
- the ground plane (26) of the matching circuit member (25) is connected to the radiation conductor (13).
- the matching circuit member (25) can be provided for the other embodiments.
- the microstrip antenna of the present invention can be stably installed on a hard article such as a metal that does not cause disadvantages such as impairing the radiation characteristics of the antenna. is there.
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007508148A JPWO2006098310A1 (ja) | 2005-03-14 | 2006-03-14 | マイクロストリップアンテナ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005070858 | 2005-03-14 | ||
JP2005-070858 | 2005-03-14 |
Publications (1)
Publication Number | Publication Date |
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WO2006098310A1 true WO2006098310A1 (ja) | 2006-09-21 |
Family
ID=36991653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/304986 WO2006098310A1 (ja) | 2005-03-14 | 2006-03-14 | マイクロストリップアンテナ |
Country Status (3)
Country | Link |
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JP (1) | JPWO2006098310A1 (ja) |
CN (1) | CN101142712A (ja) |
WO (1) | WO2006098310A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011505748A (ja) * | 2007-11-29 | 2011-02-24 | トップコン ジーピーエス,エルエルシー | 容量性素子を備えたパッチアンテナ |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02215204A (ja) * | 1989-02-15 | 1990-08-28 | Matsushita Electric Works Ltd | 車載用アンテナ |
JPH07193424A (ja) * | 1993-11-02 | 1995-07-28 | At & T Corp | アンテナ装置 |
JPH0837420A (ja) * | 1994-07-21 | 1996-02-06 | Murata Mfg Co Ltd | アンテナ |
JPH09326633A (ja) * | 1996-06-04 | 1997-12-16 | Matsushita Electric Ind Co Ltd | 周波数共用アンテナ装置 |
JP2000332523A (ja) * | 1999-05-24 | 2000-11-30 | Hitachi Ltd | 無線タグ、その製造方法及びその配置方法 |
JP2002519771A (ja) * | 1998-06-23 | 2002-07-02 | モトローラ・インコーポレイテッド | プリント・アンテナを有する無線周波識別タグとその方法 |
JP2002353735A (ja) * | 2001-05-25 | 2002-12-06 | Sharp Corp | 無線通信装置 |
JP2003258539A (ja) * | 2002-03-06 | 2003-09-12 | Communication Research Laboratory | マイクロストリップアンテナ |
JP3103091U (ja) * | 2004-01-30 | 2004-07-22 | 警察庁長官 | ベストアンテナ |
-
2006
- 2006-03-14 JP JP2007508148A patent/JPWO2006098310A1/ja active Pending
- 2006-03-14 WO PCT/JP2006/304986 patent/WO2006098310A1/ja active Application Filing
- 2006-03-14 CN CNA200680008219XA patent/CN101142712A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02215204A (ja) * | 1989-02-15 | 1990-08-28 | Matsushita Electric Works Ltd | 車載用アンテナ |
JPH07193424A (ja) * | 1993-11-02 | 1995-07-28 | At & T Corp | アンテナ装置 |
JPH0837420A (ja) * | 1994-07-21 | 1996-02-06 | Murata Mfg Co Ltd | アンテナ |
JPH09326633A (ja) * | 1996-06-04 | 1997-12-16 | Matsushita Electric Ind Co Ltd | 周波数共用アンテナ装置 |
JP2002519771A (ja) * | 1998-06-23 | 2002-07-02 | モトローラ・インコーポレイテッド | プリント・アンテナを有する無線周波識別タグとその方法 |
JP2000332523A (ja) * | 1999-05-24 | 2000-11-30 | Hitachi Ltd | 無線タグ、その製造方法及びその配置方法 |
JP2002353735A (ja) * | 2001-05-25 | 2002-12-06 | Sharp Corp | 無線通信装置 |
JP2003258539A (ja) * | 2002-03-06 | 2003-09-12 | Communication Research Laboratory | マイクロストリップアンテナ |
JP3103091U (ja) * | 2004-01-30 | 2004-07-22 | 警察庁長官 | ベストアンテナ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011505748A (ja) * | 2007-11-29 | 2011-02-24 | トップコン ジーピーエス,エルエルシー | 容量性素子を備えたパッチアンテナ |
US9172144B2 (en) | 2007-11-29 | 2015-10-27 | Topcon Gps, Llc | Patch antenna with capacitive elements |
Also Published As
Publication number | Publication date |
---|---|
CN101142712A (zh) | 2008-03-12 |
JPWO2006098310A1 (ja) | 2008-08-21 |
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