WO2013065257A1 - 無線端末 - Google Patents
無線端末 Download PDFInfo
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- WO2013065257A1 WO2013065257A1 PCT/JP2012/006806 JP2012006806W WO2013065257A1 WO 2013065257 A1 WO2013065257 A1 WO 2013065257A1 JP 2012006806 W JP2012006806 W JP 2012006806W WO 2013065257 A1 WO2013065257 A1 WO 2013065257A1
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- WIPO (PCT)
- Prior art keywords
- ground
- circuit board
- terminal
- wavelength
- conductor
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- 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
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- 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
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- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D4/00—Tariff metering apparatus
- G01D4/002—Remote reading of utility meters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2233—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in consumption-meter devices, e.g. electricity, gas or water meters
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/30—Smart metering, e.g. specially adapted for remote reading
Definitions
- the present invention relates to a small wireless terminal which is mounted on a meter device having a metal casing and has high antenna performance.
- an automatic meter reading system has been introduced in which a wireless terminal is mounted on a meter for measuring the amount of gas, electricity, etc. installed in a building such as a house or building, and data is collected by wireless communication.
- a wireless terminal is mounted on a meter for measuring the amount of gas, electricity, etc. installed in a building such as a house or building, and data is collected by wireless communication.
- the communication range is determined by the performance of the antenna of the wireless terminal attached to the meter, securing a highly efficient antenna performance becomes a major issue.
- the antenna is required to be miniaturized and built-in for ease of installation in the meter.
- a board-mounted plate antenna using a ground conductor plate as an antenna ground has been proposed (see Patent Document 1).
- This antenna uses the ground conductor plate as the antenna ground by connecting the ground conductor plate and the short-circuit conductor of the plate-like antenna via the wiring pattern of the printed circuit board.
- the grounding conductor plate is provided between the radiating conductor plate and the printed circuit board, and the wireless circuit can be arranged on the surface of the printed circuit board between the grounding conductor plate and the printed circuit board.
- high antenna performance can be realized by arranging a reflective conductor plate in the wireless terminal or using a metal housing such as a meter as the reflective conductor.
- the plate antenna described in Patent Document 1 requires a reflective conductor plate in order to realize high antenna performance, resulting in an increase in the number of components. Further, when the metal casing of the meter is used instead of the reflective conductor plate, there is a problem that the improvement amount of the antenna performance is small because the distance between the ground conductor plate and the metal casing becomes large.
- the present invention has been made to solve the above-described problems, and provides a wireless terminal having a simple and small structure that can realize high antenna performance when a metal housing such as a gas meter is installed.
- the purpose is to do.
- a first wireless terminal is a wireless terminal for wireless communication, and has a peripheral length of 1/2 wavelength or more and 1 wavelength or less at an operating frequency.
- An antenna element arranged on one side of the radio circuit board so as to face the radio circuit board, and a ground conductor arranged on the other side of the radio circuit board so as to face the radio circuit board
- a plurality of ground terminals that electrically connect the radio circuit board and the ground conductor, and a first ground terminal of the plurality of ground terminals is connected from the radio circuit board to the antenna element.
- the second ground terminal of the plurality of ground terminals is disposed in the vicinity of the power supply unit, and is separated from the first ground terminal by a distance of 1/4 wavelength or more at the operating frequency. It is arranged at the edge.
- a second wireless terminal is a wireless terminal for wireless communication, and has a wireless circuit board having a peripheral length of 1/2 wavelength or more and 1 wavelength or less at an operating frequency, and the wireless circuit First and second antenna elements disposed on one side of the board so as to face the radio circuit board, and ground conductors arranged on the other side of the radio circuit board so as to face the radio circuit board And a plurality of ground terminals that electrically connect the radio circuit board and the ground conductor, and the first ground terminal of the plurality of ground terminals is connected to the first antenna from the radio circuit board. It arrange
- a ground conductor is arranged in parallel with the radio circuit board. Then, by electrically connecting the radio circuit board and the ground conductor at a predetermined position, a radio terminal having a highly efficient and small antenna configuration can be realized.
- FIG. 1 shows a radio terminal 100 according to the first embodiment of the present invention.
- a wireless terminal 100 shown in FIG. 1 includes a first resin casing 101, a second resin casing 102, a circuit board 103, a radiation conductor 104, a power supply terminal 105, a short-circuit terminal 106, and a ground conductor 107. And a first ground terminal 108 and a second ground terminal 109.
- the first resin casing 101 and the second resin casing 102 are concave casings formed of a resin material such as polypropylene and ABS, which are low-loss materials, for example.
- a box-shaped casing is formed by screwing or welding.
- the circuit board 103 is, for example, a double-sided copper-clad board having a length Lr1 and a width Lr2, and a radio circuit, a control circuit, and the like are mounted on the surface of the board. At this time, the length Lr1 and the width Lr2 are set so that the peripheral length of the circuit board 103 is 1 ⁇ 2 wavelength or more and 1 wavelength or less at the operating frequency.
- the radiation conductor 104 is, for example, a planar sheet metal made of a conductor such as copper, and is disposed in parallel to face the circuit board 103.
- the power feeding terminal 105 is arranged orthogonal to the surface direction of the radiation conductor 104, one end is electrically connected to the radio circuit arranged on the circuit board 103, and the other end is electrically connected to the radiation conductor 104. Is done.
- the short-circuit terminal 106 is disposed orthogonal to the surface direction of the radiating conductor 104, and one end is electrically connected to the ground formed by the copper foil pattern on the circuit board 103. The end is electrically connected to the radiation conductor 104.
- the radiation conductor 104, the electric power feeding terminal 105, and the short circuit terminal 106 comprise a plate-shaped inverted F antenna.
- the widths of the power supply terminal 105 and the short-circuit terminal 106 and the interval between the power supply terminal 105 and the short-circuit terminal 106 are set to values that allow impedance matching.
- the ground conductor 107 is a sheet metal having a length Ls1 and a width Ls2 made of a conductor such as copper, for example, and is opposite to the back surface of the circuit board 103, that is, the surface on which the radiation conductor 104 is disposed. It is arranged on the side surface in parallel with the circuit board 103.
- the ground conductor 107 is set to have a larger planar dimension than the circuit board 103.
- the first ground terminal 108 is disposed orthogonal to the surface direction of the ground conductor 107, one end is electrically connected to the ground formed by the copper foil pattern on the circuit board 103, and the other end is the ground conductor. 107 is electrically connected.
- the first ground terminal 108 is disposed at the edge of the circuit board 103 at a distance S1 from the position where the power supply terminal 105 is connected to the circuit board 103.
- the distance S1 is desirably 1/16 wavelength or less at the operating frequency, for example. That is, the first ground terminal 108 is located in the vicinity of the power feeding portion to the radiation conductor 104.
- the second ground terminal 109 is disposed orthogonal to the surface direction of the ground conductor 107, and one end is electrically connected to the ground formed by the copper foil pattern on the circuit board 103. The other end is electrically connected to the ground conductor 107.
- the second ground terminal 109 is arranged at the edge of the circuit board 103 at a distance S2 from the position where the first ground terminal 108 is connected to the circuit board 103. At this time, it is desirable that the distance S2 is, for example, a quarter wavelength or more at the operating frequency.
- the performance of the plate-like inverted F antenna in the radio apparatus 100 of FIG. 1 configured as described above will be described.
- the operating frequency is 868 MHz, and therefore one wavelength is 345 mm.
- the specific dimensions of the wireless device 100 of FIG. 1 will be described.
- the length Lr1 of the circuit board 103 is 28.5 mm (0.082 wavelength), the width Lr2 is 69.5 mm (0.2 wavelength), and the ground conductor 107
- the length Ls1 is 60 mm (0.173 wavelength)
- the width Ls2 is 67.5 mm (0.195 wavelength)
- the distance S1 between the power supply terminal 105 and the first ground terminal 108 is 7 mm (0.02 wavelength)
- the first The distance S2 between the ground terminal 108 and the second ground terminal 109 is 89 mm (0.257 wavelength)
- the distance between the ground conductor 107 and a metal housing such as a gas meter is 2 mm (0.005 wavelength).
- the peripheral length of the circuit board 103 is 196 mm (0.564 wavelength), which is not less than 1 ⁇ 2 wavelength and not more than 1 wavelength.
- the distance S2 between the first ground terminal 108 and the second ground terminal 109 is 89 mm (0.257 wavelength), which is equal to or greater than 1 ⁇ 4 wavelength.
- FIG. 2 shows the radiation efficiency of the wireless terminal 100 of FIG. 1 together with three comparative examples.
- the condition (1) is that radiation efficiency in the case of the first comparative example in which the peripheral length of the circuit board 103 is less than 1 ⁇ 2 wavelength and only the first ground terminal 108 in the vicinity of the feeding point is mounted. Is shown.
- Condition (2) is that the peripheral length of the circuit board 103 is 1 ⁇ 2 wavelength or more and 1 wavelength or less, and only the first ground terminal 108 in the vicinity of the feeding point is mounted. Is shown.
- Condition (3) is that the peripheral length of the circuit board 103 is 1 ⁇ 2 wavelength or more and 1 wavelength or less, and the distance S2 between the first ground terminal 108 and the second ground terminal 109 is less than 1 ⁇ 4 wavelength.
- Condition (4) is that the peripheral length of the circuit board 103 is 1 ⁇ 2 wavelength or more and 1 wavelength or less, and the distance S2 between the first ground terminal 108 and the second ground terminal 109 is 1 ⁇ 4 wavelength or more. The radiation efficiency in the case of this embodiment is shown.
- the peripheral length of the circuit board 103 is not less than 1 ⁇ 2 wavelength and not more than 1 wavelength
- a plurality of circuit boards 103 and the ground conductor 107 are connected.
- the circuit board 103 and the ground conductor 107 operate as one large ground, thereby realizing antenna performance with high radiation efficiency. I understand that I can do it.
- the wireless terminal 100 when the wireless terminal 100 is disposed in a metal housing such as a gas meter, for example, the ground conductor 107 and the metal housing are placed in an electromagnetic field by being disposed so that the ground conductor 107 and the metal housing are close to each other. Therefore, the metal casing operates as an antenna ground, and the radiation efficiency can be further improved, so that high antenna performance can be realized.
- the radiating conductor 104 and the ground conductor 107 are each made of a sheet metal made of a conductor, but the same effect can be obtained even if the radiating conductor 104 and the ground conductor 107 are made of a copper foil pattern on a printed board.
- FIG. 4 shows a radio terminal 400 according to the second embodiment of the present invention.
- 4 includes a circuit board 403, a first radiation conductor 404, a second radiation conductor 405, a ground conductor 406, a first ground terminal 407, and a second ground terminal 408. And a third ground terminal 409.
- casing is abbreviate
- the circuit board 403 is, for example, a double-sided copper-clad board having a length Lf1 and a width Lf2, and a radio circuit, a control circuit, and the like are mounted on the surface of the board. At this time, the length Lf1 and the width Lf2 are set so that the peripheral length of the circuit board 403 is 1 ⁇ 2 wavelength or more and 1 wavelength or less at the operating frequency.
- the first radiating conductor 404 is, for example, a linear conductor configured in an L shape, and is arranged orthogonal to the surface direction of the circuit board 403, and one end is a wireless that is arranged on the circuit board 403. It is electrically connected to the circuit, and the other end is disposed in parallel to face the circuit board 403.
- the second radiating conductor 405 is, for example, a linear conductor configured in an L shape, like the first radiating conductor 404, and is disposed orthogonal to the surface direction of the circuit board 403. Is electrically connected to a wireless circuit disposed on the circuit board 403, and the other end is disposed in parallel to face the circuit board 403.
- the ground conductor 406 is, for example, a sheet metal having a length Lg1 and a width Lg2 made of a conductor such as copper, and the back surface of the circuit board 403, that is, the first radiation conductor 404 and the second radiation conductor 405. Are arranged in parallel to the circuit board 403 on the side of the surface opposite to the surface on which the circuit board 403 is arranged.
- the first ground terminal 407 is disposed orthogonal to the surface direction of the ground conductor 406, one end is electrically connected to the ground formed by the copper foil pattern on the circuit board 403, and the other end is the ground conductor. 406 is electrically connected. Moreover, the first ground terminal 407 is disposed at the edge of the circuit board 403 at a distance S3 from the position where the first radiation conductor 404 is connected to the circuit board 403. At this time, the distance S3 is desirably 1/16 wavelength or less at the operating frequency, for example. That is, the first ground terminal 407 is located in the vicinity of the power feeding portion to the first radiation conductor 404.
- the second ground terminal 408 is disposed perpendicular to the surface direction of the ground conductor 406, and one end thereof is electrically connected to the ground formed by the copper foil pattern on the circuit board 403. And the other end is electrically connected to the ground conductor 406. Moreover, the second ground terminal 408 is disposed at the edge of the circuit board 403 at a distance S4 away from the position where the second radiation conductor 405 is connected to the circuit board 403. At this time, for example, the distance S4 is desirably 1/16 wavelength or less at the operating frequency. That is, the second ground terminal 408 is located in the vicinity of the power feeding portion to the second radiation conductor 405.
- the third ground terminal 409 is disposed orthogonal to the surface direction of the ground conductor 406, and one end is a copper foil pattern on the circuit board 403. The other end is electrically connected to the ground conductor 406.
- the third ground terminal 409 is separated from one of the first ground terminal 407 and the second ground terminal 408, for example, the second ground terminal 408 by a distance S5, and the edge of the circuit board 403. Placed in the section.
- the distance S5 is preferably, for example, 1/8 wavelength or more and 1/4 wavelength or less at the operating frequency.
- the performance of the linear inverted L antenna having the diversity antenna configuration in the radio apparatus 400 of FIG. 4 configured as described above will be described.
- the operating frequency is 868 MHz, and therefore one wavelength is 345 mm.
- the specific dimensions of the wireless device 400 of FIG. 4 will be described.
- the length Lf1 of the circuit board 403 is 56 mm (0.162 wavelength), the width Lf2 is 93 mm (0.269 wavelength), and the length Lg1 of the ground conductor 406 is 80 mm (0.231 wavelength), width Lg2 is 89.5 mm (0.259 wavelength), the distance S3 between the first radiation conductor 404 and the first ground terminal 407 is 7 mm (0.02 wavelength), the second The distance S4 between the radiation conductor 405 and the second ground terminal 408 is 7 mm (0.02 wavelength), the distance S5 between the second ground terminal 408 and the third ground terminal 409 is 54 mm (0.156 wavelength), and the ground.
- the distance between the conductor 406 and a metal housing such as a gas meter is 2 mm (0.005 wavelength).
- the peripheral length of the circuit board 403 is 298 mm (0.862 wavelength), which is not less than 1 ⁇ 2 wavelength and not more than 1 wavelength.
- the distance S5 between the second ground terminal 408 and the third ground terminal 409 is 54 mm (0.156 wavelength), which is 1/8 wavelength or more and 1/4 wavelength or less.
- FIG. 5 shows the radiation efficiency of the wireless terminal 400 of FIG. 4 together with a modification example.
- the condition (5) is the radiation in the case of the modified example in which the peripheral length of the circuit board 403 is 1 ⁇ 2 wavelength and 1 wavelength or less, and the mounting of the third ground terminal 409 in FIG. 4 is omitted. Shows efficiency.
- Condition (6) is that the peripheral length of the circuit board 403 is 1/2 wavelength and 1 wavelength or less, and the distance S5 between the second ground terminal 408 and the third ground terminal 409 is 1/8 wavelength or more and 1 / The radiation efficiency in the case of this embodiment with four or less wavelengths is shown.
- the circuit board 403 and the second radiation conductors 404 and 405 are adjacent to each other. It can be seen that by providing a plurality of ground terminals 407 and 408 for connecting to the ground conductor 406, antenna performance having high radiation efficiency equivalent to that of the first embodiment can be realized.
- the circuit board 403 and the ground conductor 406 are connected to each other.
- the second and third ground terminals 407, 408, and 409 are provided, and the third and third ground terminals 409 are disposed outside the vicinity of the first and second radiation conductors 404 and 405, and the first and second ground terminals.
- the wireless terminal 400 when the wireless terminal 400 is disposed in a metal housing such as a gas meter, for example, the ground conductor 406 and the metal housing are placed in an electromagnetic field by being disposed so that the ground conductor 406 and the metal housing are close to each other. Therefore, the metal casing operates as an antenna ground, and the radiation efficiency can be further improved, so that high antenna performance can be realized.
- the first and second radiating conductors 404 and 405 are composed of linear antenna elements, but the same efficiency can be obtained even if each is composed of a plate antenna element.
- ground conductor 406 is made of a sheet metal made of a conductor, the same effect can be obtained even if it is made of a copper foil pattern on a printed board.
- the wireless terminal of the present invention has an effect that high radiation efficiency is obtained in spite of a small structure when installed in a metal housing such as a gas meter, and is used as a wireless terminal for an automatic meter reading system such as a gas meter. Useful.
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Abstract
Description
図1は、本発明の第1の実施形態に係る無線端末100を示している。図1に示す無線端末100は、第1の樹脂筐体101と、第2の樹脂筐体102と、回路基板103と、放射導体104と、給電端子105と、短絡端子106と、接地導体107と、第1の接地端子108と、第2の接地端子109とから構成される。
図4は、本発明の第2の実施形態に係る無線端末400を示している。図4に示す無線端末400は、回路基板403と、第1の放射導体404と、第2の放射導体405と、接地導体406と、第1の接地端子407と、第2の接地端子408と、第3の接地端子409とから構成される。なお、ここでは樹脂筐体の図示を省略している。
101 第1の樹脂筐体
102 第2の樹脂筐体
103 回路基板
104 放射導体
105 給電端子
106 短絡端子
107 接地導体
108 第1の接地端子
109 第2の接地端子
300 無線端末
304 放射導体
400 無線端末
403 回路基板
404 第1の放射導体
405 第2の放射導体
406 接地導体
407 第1の接地端子
408 第2の接地端子
409 第3の接地端子
Claims (3)
- 無線通信のための無線端末であって、
動作周波数にて1/2波長以上かつ1波長以下の周囲長を有する無線回路基板と、
前記無線回路基板の一方の面側に前記無線回路基板と対向して配置されたアンテナ素子と、
前記無線回路基板の他方の面側に前記無線回路基板と対向して配置された接地導体と、
前記無線回路基板と前記接地導体とを電気的に接続する複数の接地端子とを備え、
前記複数の接地端子のうちの第1の接地端子を、前記無線回路基板から前記アンテナ素子への給電部の近傍に配置し、
前記複数の接地端子のうちの第2の接地端子を、前記第1の接地端子から前記動作周波数にて1/4波長以上の距離を隔てて前記無線回路基板の縁部に配置したことを特徴とする無線端末。 - 無線通信のための無線端末であって、
動作周波数にて1/2波長以上かつ1波長以下の周囲長を有する無線回路基板と、
前記無線回路基板の一方の面側に前記無線回路基板と対向に配置された第1及び第2のアンテナ素子と、
前記無線回路基板の他方の面側に前記無線回路基板と対向して配置された接地導体と、
前記無線回路基板と前記接地導体とを電気的に接続する複数の接地端子とを備え、
前記複数の接地端子のうちの第1の接地端子を、前記無線回路基板から前記第1のアンテナ素子への給電部の近傍に配置し、
前記複数の接地端子のうちの第2の接地端子を、前記無線回路基板から前記第2のアンテナ素子への給電部の近傍に配置したことを特徴とする無線端末。 - 請求項2記載の無線端末において、
前記複数の接地端子のうちの第3の接地端子を、前記第1又は第2の接地端子から前記動作周波数にて1/8波長以上かつ1/4波長以下の距離を隔てて前記無線回路基板の縁部に配置したことを特徴とする無線端末。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN201280053277.XA CN104025378B (zh) | 2011-10-31 | 2012-10-24 | 无线终端 |
EP15177068.2A EP2950389B1 (en) | 2011-10-31 | 2012-10-24 | Wireless terminal unit |
EP12845378.4A EP2775566B1 (en) | 2011-10-31 | 2012-10-24 | Wireless terminal |
JP2013541609A JP5950236B2 (ja) | 2011-10-31 | 2012-10-24 | 無線端末 |
ES12845378T ES2879455T3 (es) | 2011-10-31 | 2012-10-24 | Terminal inalámbrico |
Applications Claiming Priority (2)
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JP2011238359 | 2011-10-31 | ||
JP2011-238359 | 2011-10-31 |
Publications (1)
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WO2013065257A1 true WO2013065257A1 (ja) | 2013-05-10 |
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PCT/JP2012/006806 WO2013065257A1 (ja) | 2011-10-31 | 2012-10-24 | 無線端末 |
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EP (2) | EP2950389B1 (ja) |
JP (1) | JP5950236B2 (ja) |
CN (1) | CN104025378B (ja) |
ES (2) | ES2879455T3 (ja) |
WO (1) | WO2013065257A1 (ja) |
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JP6311993B2 (ja) * | 2012-07-18 | 2018-04-18 | パナソニックIpマネジメント株式会社 | 無線装置 |
CN110463372A (zh) * | 2017-03-30 | 2019-11-15 | 日立汽车系统株式会社 | 电子控制装置 |
Citations (4)
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JPH10313212A (ja) | 1997-05-12 | 1998-11-24 | Matsushita Electric Ind Co Ltd | 基板実装形板状アンテナ |
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CN201063610Y (zh) * | 2007-06-29 | 2008-05-21 | 富港电子(东莞)有限公司 | 无线装置 |
CN201966972U (zh) * | 2011-02-24 | 2011-09-07 | 惠州卡美欧通讯有限公司 | 可提高天线性能的翻盖手机 |
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- 2012-10-24 JP JP2013541609A patent/JP5950236B2/ja active Active
- 2012-10-24 WO PCT/JP2012/006806 patent/WO2013065257A1/ja active Application Filing
- 2012-10-24 EP EP15177068.2A patent/EP2950389B1/en active Active
- 2012-10-24 EP EP12845378.4A patent/EP2775566B1/en active Active
- 2012-10-24 ES ES12845378T patent/ES2879455T3/es active Active
- 2012-10-24 CN CN201280053277.XA patent/CN104025378B/zh not_active Expired - Fee Related
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JPH10313212A (ja) | 1997-05-12 | 1998-11-24 | Matsushita Electric Ind Co Ltd | 基板実装形板状アンテナ |
JPH11355022A (ja) * | 1998-06-03 | 1999-12-24 | Nec Saitama Ltd | 携帯電話機の内臓アンテナ |
JP2008533934A (ja) * | 2005-03-23 | 2008-08-21 | キョウセラ ワイヤレス コープ. | 電磁シールドカウンターポイズを有するパッチアンテナ |
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Also Published As
Publication number | Publication date |
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CN104025378A (zh) | 2014-09-03 |
EP2775566A1 (en) | 2014-09-10 |
EP2950389A1 (en) | 2015-12-02 |
ES2883292T3 (es) | 2021-12-07 |
ES2879455T3 (es) | 2021-11-22 |
CN104025378B (zh) | 2016-03-30 |
EP2950389B1 (en) | 2021-07-21 |
JP5950236B2 (ja) | 2016-07-13 |
JPWO2013065257A1 (ja) | 2015-04-02 |
EP2775566B1 (en) | 2021-06-02 |
EP2775566A4 (en) | 2015-03-18 |
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