WO2002089255A1 - Dispositif antenne et appareil radio - Google Patents

Dispositif antenne et appareil radio Download PDF

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Publication number
WO2002089255A1
WO2002089255A1 PCT/JP2002/004077 JP0204077W WO02089255A1 WO 2002089255 A1 WO2002089255 A1 WO 2002089255A1 JP 0204077 W JP0204077 W JP 0204077W WO 02089255 A1 WO02089255 A1 WO 02089255A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
antenna element
conductor
terminal
antenna device
Prior art date
Application number
PCT/JP2002/004077
Other languages
English (en)
Japanese (ja)
Inventor
Masahiro Ohara
Kazuto Kume
Susumu Inatsugu
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to DE10292326T priority Critical patent/DE10292326T5/de
Publication of WO2002089255A1 publication Critical patent/WO2002089255A1/fr

Links

Classifications

    • 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
    • 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
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Definitions

  • the present invention relates to an antenna device mainly used for a wireless device for mobile communication and the like and a wireless device using the same.
  • a typical example of such an antenna device and a mobile communication device using the same is a mobile phone.
  • Mobile phones are used in various parts of the world, and their operating frequency bands also differ from one region to another.
  • the operating frequency band of a digital mobile phone is shown below.
  • the operating frequency band of Japan's Personal Digital Cellular (PDC) 800 is 810-960 MHz.
  • GSM Group Special Mobile Community
  • PCN Personal Communication Network
  • PCS Personal Communication System
  • Inverted F antenna devices are widely used in general.
  • a plate-shaped inverted-F antenna device mounted on a conventional mobile phone will be described with reference to FIGS.
  • FIG. 8 is a conceptual diagram of a conventional antenna device.
  • FIG. 9 is a perspective view in which a part of the back surface of a mobile phone equipped with the antenna device is cut away.
  • a conductive ground plane 2 is arranged below the antenna element 1 in parallel with the antenna element 1 at a distance of 9 mm.
  • the antenna element 1 is formed of a copper alloy plate having a size of about 35 mm in length and 45 mm in width and a thickness of 0.2 mm.
  • the conductor ground plate 2 is formed of a copper alloy plate having a material thickness of 0.2 mm.
  • the antenna element 1 is fixedly supported on the conductive ground plane 2 by a holding portion made of a resin dielectric material such as ABS and PPO.
  • the first terminal 3 formed at one end of the antenna element 1 is electrically connected to the conductive ground plate 2 by a method such as soldering.
  • a second terminal 5 is formed at a feeding point 4 near the first terminal 3. Further, the second terminal 5 protrudes below the conductor base plate 2 through the hole 6 in an insulated state with respect to the conductor base plate 2.
  • the antenna device 7 is configured as described above.
  • the antenna device 7 is provided in a rear case 9 of the mobile phone 8.
  • the conductor base plate 2 of the antenna device 7 is electrically connected to a shield formed on the inner surface of the rear case 9 of the mobile phone 8.
  • the second terminal 5 of the antenna device 7 is electrically connected to a high-frequency circuit section (not shown) on a high-frequency circuit board disposed inside the rear case 9 of the mobile phone 8 by a method such as pressure contact. I have. The operation of the antenna device 7 configured as described above and the mobile phone 8 using the same will be described below.
  • the impedance at the first terminal 3 formed on the antenna element 1 of the antenna device 7 indicates inductive.
  • the other portions except the first terminal 3 portion viewed from the feeding point 4 of the antenna element 1 form a capacitive line.
  • the lengths 10 and 20 of each side of the antenna element 1, the width L 30 of the first terminal 3, and the distance L 40 between the first terminal 3 and the feeding point 4 are the feeding points of the antenna element 1. From the viewpoint of 4, the antenna device 7 is determined to have a desired resonance frequency and input impedance.
  • the input impedance is based on the position of feed point 4, ie, L 30 and L 40. Therefore, by determining L 30 and L 40 as described above, it is possible to adjust the input impedance in order to match the impedance at approximately 50 ⁇ at the desired resonance frequency of the high-frequency circuit. it can.
  • the signal power of the desired resonance frequency received by the antenna element 1 is sent to the high-frequency circuit section disposed inside the rear case 9 of the mobile phone 8 through the second terminal 5 of the antenna element 1.
  • the signal power at the desired resonance frequency output from the high-frequency circuit is radiated from the antenna element 1 via the second terminal 5.
  • the plate-shaped inverted-F antenna is suitable as an antenna device for a mobile phone that requires a small size, high gain, a wide directional radiation pattern, and the like.
  • the antenna can be reduced in size and thickness in a desired frequency band.
  • the planar inverted-F antenna can be incorporated in the housing of a small device such as a mobile phone to give a degree of freedom to the design of the device.
  • This antenna can be built into a mobile phone as an antenna device for the mobile phone. Therefore, compared to antennas that are exposed from mobile phones, they are more resistant to mechanical shock. Because this antenna is protected from mechanical shock by the mobile phone housing. Therefore, the antenna device using the plate-shaped inverted-F antenna is hardly damaged by mechanical shock. Therefore, the planar inverted-F antenna contributes to a longer life of the mobile phone antenna device.
  • the bandwidth for obtaining the predetermined sensitivity in the frequency band used for the mobile phone as described above is narrow. The fractional bandwidth is at most about 3%. To improve the bandwidth, its shape becomes larger. Therefore, it is difficult to obtain a more compact, thinner, wider band, and higher sensitivity built-in type antenna device that can respond to the market trend of smaller and thinner mobile phones in recent years.
  • the second terminal 5 of the antenna device 7 must be connected to the mobile phone 8.
  • a complicated impedance matching circuit composed of, for example, an LC element is required between the telephone 8 and the high-frequency circuit provided on the high-frequency circuit board of the telephone 8. This has contributed to the cost of mobile phones. Disclosure of the invention
  • An object of the present invention is to provide an antenna device which requires a small space, has a wide band, has high sensitivity, can be used in a multiband, can easily adjust impedance, has high productivity, and can be built in a radio device.
  • Another object of the present invention is to provide an inexpensive wireless device with good call quality using the antenna device.
  • the antenna device of the present invention includes a conductive ground plane, a first plate-shaped antenna element, and a second plate-shaped antenna element.
  • the first antenna element has at least a first terminal electrically connected to the conductive ground plane, a second terminal electrically separated from the first terminal by a predetermined distance, and electrically connected to a high-frequency circuit unit of the wireless device main body. Including one radiating conductor element, it is arranged on the conductor ground plane.
  • the second antenna element includes at least one other radiating conductor element that is not directly connected to the conductive ground plane and the first antenna element.
  • At least one radiating conductor element of the second antenna element is disposed between the conductor ground plane and the first antenna element to form an antenna body. Further, each of the first antenna element, the second antenna element, and the conductive ground plane is supported and fixed by a dielectric.
  • the distance between each of the conductor ground plane, the plate-shaped first antenna element, and the plate-shaped second antenna element is determined by the desired impedance characteristic and bandwidth. Adjusted and set accordingly.
  • FIG. 1 shows the configuration of the antenna device according to the first embodiment of the present invention.
  • FIG. 2 shows the configuration of the antenna device according to the second embodiment of the present invention.
  • FIG. 3 shows the configuration of the antenna device according to the third embodiment of the present invention.
  • FIG. 4 shows a configuration of an antenna device according to a fourth embodiment of the present invention.
  • FIG. 5 shows a configuration of an antenna device according to a fifth embodiment of the present invention.
  • FIG. 6 shows a configuration of a mobile phone according to a sixth embodiment of the present invention.
  • FIG. 7 shows a configuration of a mobile phone according to a seventh embodiment of the present invention.
  • FIG. 8 is a conceptual diagram of a conventional antenna device.
  • FIG. 9 is a perspective view in which a part of the back surface of a mobile phone equipped with a conventional antenna device is cut away.
  • FIG. 1 shows the configuration of the antenna device according to the first embodiment of the present invention.
  • the first antenna element 10 is made of a conductive metal such as copper, a copper alloy, an aluminum alloy, or a stainless steel alloy, or a thin plate-shaped conductor obtained by applying a conductive metal such as Au or Ni to a conductive metal.
  • the first radiating conductor element 11 and the second radiating conductor element 12 are formed on the same plane.
  • the first radiation conductor element 11 resonates at about 14 wavelengths in the GSM band.
  • the second radiation conductor element 12 resonates at about 1Z4 wavelength in the PCN band.
  • a short-circuit terminal 13 is formed in a vertically downward direction.
  • the power supply terminal 16 is located at a common power supply point 14 of the first radiation conductor element 11 and the second radiation conductor element 12 near the short-circuit terminal 13.
  • Feeding Terminal 16 is electrically connected to high-frequency circuit section 15 of the wireless device.
  • the conductive ground plane 17 is disposed below the first antenna element 10 at a predetermined interval so as to be substantially parallel to the first antenna element 10.
  • the conductor ground plate 17 is electrically connected to the short-circuit terminal 13 of the first antenna element 10.
  • the conductor ground plate 17 is made of a conductive metal such as copper, copper alloy, aluminum alloy, or stainless steel, or a thin plate conductor obtained by applying a conductive metal plating such as Au or Ni to a conductive metal.
  • the second antenna element 18 is composed of the first antenna element 10 and the conductive ground plane 1.
  • the second antenna element is also made of a conductive metal such as copper, copper alloy, aluminum alloy, stainless steel alloy, or the conductive metal such as Au, Ni or the like. It is made of a thin plate conductor with conductive metal plating.
  • the antenna device 19 is made of a resin having a desired dielectric constant and low dielectric loss so that the first antenna element 10, the conductive ground plane 17 and the second antenna element 18 are maintained in the above arrangement. It is configured by fixing by insert molding using a dielectric material (not shown). Next, the operation of the antenna device 19 configured as described above will be described below.
  • the antenna device 19 includes a first antenna element 10 including a first radiation conductor element 11, a second radiation conductor element 12, a short-circuit terminal 13 and a feed terminal 16, It is composed of a conductive ground plane 17 and a second antenna element 18 arranged between the first antenna element 10 and the conductive ground plane 17.
  • a first antenna element 10 including a first radiation conductor element 11, a second radiation conductor element 12, a short-circuit terminal 13 and a feed terminal 16
  • It is composed of a conductive ground plane 17 and a second antenna element 18 arranged between the first antenna element 10 and the conductive ground plane 17.
  • Such an antenna device 19 is usually called a plate-shaped inverted-F antenna.
  • the following dimensions are determined so as to obtain desired resonance frequency and impedance characteristics in the GSM band.
  • the input impedance characteristic is mainly determined by the position of the feed terminal 16, that is, the relationship between L 1 and L 2, L 3, and the distance between the first antenna element 10 and the second antenna element 18. Based on the relationship of electromagnetic coupling. By adjusting these dimensions and their relationships, it is possible to match the impedance to 50 ⁇ at the desired resonance frequency of the high-frequency circuit section 15 of the mobile phone.
  • the desired resonance frequency and impedance characteristics of the PCN band are determined by the following dimensions.
  • the input impedance characteristic is mainly based on the position of the power supply terminal 16, that is, the relationship between L 1 and L 4.
  • the signal power of the electromagnetic wave having the desired resonance frequency received by the antenna device 19 is converted into an electric signal and passed through a power supply terminal 16 formed on the first antenna element 10 so that the high-frequency circuit Enter part 1 5 Is forced.
  • an electric signal of the signal power of the high-frequency circuit section 15 is transmitted in a flow opposite to that at the time of reception, and is radiated from the antenna device 19 as an electromagnetic wave.
  • the relationship between the first antenna element 10, the second antenna element 18, and the conductor ground plane 17 will be described.
  • the first antenna element 10, the second antenna element 18, and the conductive ground plane 17 are arranged substantially in parallel with each other. Therefore, between the first antenna element 10 and the conductive ground plane 17, between the second antenna element 18 and the conductive ground plane 17, and between the first antenna element 10 and the second antenna element 18. In between, capacitance is generated.
  • the impedance characteristics of the first antenna element 10 and the second antenna element 18 are capacitive. This is a factor for increasing the resonance frequency of the antenna device 19.
  • the impedance characteristic feed terminal 16 by separating the position of the impedance characteristic feed terminal 16 from the short-circuit terminal 13 by a predetermined distance, it is possible to add inductive to this impedance characteristic, cancel the reactance component, and match the impedance to approximately 50 ⁇ . Can be taken.
  • the distance between the short-circuit terminal 13 and the power supply terminal 16 and the radiating conductor elements of the plate-like first antenna element 10 and second antenna element 18 It is possible to easily set the width, the length, the distance between the first antenna element 10 and the second antenna element 18, and the like.
  • the impedance characteristic appropriately corresponding to the desired frequency band can be obtained. Characteristics can be easily obtained, and the antenna device can have a wider band and higher sensitivity. Further, the antenna device can be made compact and simple.
  • impedance characteristics corresponding to the third frequency band can be obtained.
  • the conductor width and length L3 of the second antenna element 18 and the first antenna element 10 and the second antenna element 18 are controlled while suppressing the effect on the impedance characteristics in the GSM band and PCN band. May be set.
  • the antenna element since the antenna element has a plate shape, the following dimensions can be easily set.
  • the conductor portion of the antenna device 19 may be formed by various conductor forming methods such as printing, sintering, overlapping, and plating.
  • FIG. 2 shows the configuration of the antenna device according to the second embodiment of the present invention.
  • the third antenna element 20 is the first antenna element 10
  • the radiation conductor elements 11 are arranged at predetermined intervals.
  • the third antenna element 20 is made of a conductive metal such as copper, a copper alloy, an aluminum alloy, or a stainless steel alloy, or a thin plate conductor in which the conductive metal is plated with a conductive metal such as Au or Ni.
  • the third antenna element 20 forms a radiation conductor element 21 having a length that resonates at about 3 to 8 wavelengths or resonates at about 5Z8 wavelength in the GSM band.
  • the first radiation conductor 11 of the first antenna element 10 is supplied.
  • a terminal 22 that is electrically connected is formed near the electric point 14.
  • the other configuration is the same as that of the first embodiment, and antenna device 23 is configured.
  • the first antenna element 10 and the second antenna element 18 can obtain a frequency band in which the required characteristics in the GSM band can be obtained.
  • the frequency band for obtaining the required characteristics in the GSM band can be further widened.
  • This broadening of the band is achieved mainly by the electromagnetic field coupling between the third antenna element 20, the first antenna element 10, and the conductive ground plane 17, so that the frequency characteristic shows a bimodal resonance characteristic. , Will be realized.
  • a radiation conductor of a length that resonates at about 3/8 wavelength or about 5-8 wavelength in the PCN band on the first antenna element 10 and the second radiation conductor element 12 An element is formed.
  • the frequency characteristic is made to exhibit a bimodal resonance characteristic by the electromagnetic field coupling in the same manner as described above, so that the frequency band of the PCN band can be further widened.
  • the impedance corresponding to the third frequency band can be obtained by adjusting the following values.
  • FIG. 3 shows the configuration of the antenna device according to the third embodiment of the present invention.
  • plate-shaped second radiation conductor element 12 is formed in first antenna element 10 of antenna apparatus 19.
  • a substantially zigzag or substantially meandering second radiating conductor element 24 is provided in place of the plate-shaped second radiating conductor element 12, and An antenna element 25 is formed. Otherwise, the antenna device 26 is configured in the same manner as in the first embodiment.
  • the second radiation conductor element 24 since the second radiation conductor element 24 has a substantially meandering shape, the radiation conductor length and width can be easily set and adjusted. Therefore, the impedance of first antenna element 25 can be set to an impedance characteristic corresponding to a desired frequency band with higher accuracy than the impedance setting in the first embodiment.
  • the antenna element has a plate shape and a substantially zigzag shape or a substantially meander shape, the following dimensions can be easily set.
  • FIG. 4 shows a configuration of an antenna device according to a fourth embodiment of the present invention.
  • a conductive ground plane 17 is used.
  • a ground pattern portion 30 formed on a printed circuit board 29 in a housing 28 of a mobile phone main body 27 is Used as a conductive ground plane.
  • the short-circuit terminal 13 formed on the first antenna element 10 is electrically connected to the ground pattern section 30 by a method such as pressure welding or soldering.
  • the power supply terminal 16 is electrically connected to the high-frequency circuit section 15 of the mobile phone main body 27 by a method such as pressure welding or soldering.
  • the antenna device 31 is configured. The rest is the same as the first embodiment.
  • the conductive ground plane is configured using the ground pattern portion 30 in the housing 28 of the mobile phone main body 27. Further, the conductor ground plane of the wireless device main body may be used as the conductor ground plane.
  • the degree of freedom in the method of mounting the first antenna element 10 and the second antenna element 18 on the mobile phone main body 27 and the mounting location are improved. That is, the degree of freedom in mounting the antenna device 31 on the mobile phone main body 27 is increased. Therefore, it can contribute to miniaturization of mobile phones.
  • FIG. 5 shows a configuration of an antenna device according to a fifth embodiment of the present invention.
  • the matching circuit 32 is composed of at least one reactance element.
  • the matching circuit 32 is electrically connected to the feed terminal 16 formed on the first antenna element 10 of the antenna device 19 in the first embodiment. The rest is the same as the first embodiment.
  • the impedance circuit of the antenna device 33 can be easily set in a desired frequency band by the matching circuit 32.
  • the antenna device can have a wider band and higher sensitivity, and can be downsized.
  • the matching circuit 32 is formed on the feed terminal 16 side of the antenna device 33, but the same effect can be obtained by forming the matching circuit 32 on the short-circuit terminal 13.
  • the matching circuit can easily achieve high-precision impedance matching with the high-frequency circuit unit of the wireless device main body, and efficiently obtain impedance characteristics corresponding to a desired frequency band. Further, similarly to the above-described embodiments, a wider band and higher sensitivity can be achieved.
  • FIG. 6 shows a configuration of a mobile phone according to a sixth embodiment of the present invention.
  • the upper part of housing 35 of mobile phone main body 34 forms a plane.
  • a printed circuit board 36 is arranged in the housing 35, and the antenna device 19 of the first embodiment described with reference to FIG. 1 is arranged and mounted in parallel with the upper surface thereof.
  • the conductor ground plate 17 of the antenna device 19 is replaced with a ground pattern portion 37 formed on a printed circuit board 36 of the mobile phone main body 34 shown in FIG.
  • the power supply terminal 16 is press-contacted with the power supply pattern section 38 formed near the ground pattern section 37 of the printed circuit board 36. It is electrically connected by a method such as soldering.
  • the housing 35 of the mobile phone main body 34 protects the antenna device 19 from mechanical shock.
  • the life of the antenna device 19 can be extended.
  • a matching circuit for impedance characteristic matching in a desired frequency band is not required, the cost of the mobile phone can be reduced.
  • the housing of the wireless device can protect the antenna device from mechanical shock.
  • the degree of freedom in designing the wireless device main body is high, and a matching circuit for impedance matching is not required, the cost of the wireless device can be reduced.
  • FIG. 7 shows a configuration of a mobile phone according to a seventh embodiment of the present invention.
  • an antenna device 19A is provided at the upper end of the printed circuit board 41 in the housing 40 of the mobile phone main body 39. At the lower end of the printed circuit board 41, an antenna device 19B is provided.
  • antenna device 19 A and antenna device 19 B are configured in the same manner as antenna device 19 in the first embodiment.
  • the feeder terminals 16 A and 16 B of the antenna devices 19 A and 19 B are connected to the terminals 43 A and ⁇ B of the switch 43 of the high-frequency circuit part 42 of the mobile phone body 39, respectively. It is electrically connected by pressure welding, soldering, etc. You.
  • a part of the conductive ground planes 17A and 17B is electrically connected to a ground pattern portion 45 formed on the printed circuit board 41 of the mobile phone main body 39.
  • the reception power levels of antenna device 19A and antenna device 19B are compared.
  • a diversity communication device is configured by a switch 43 connecting the antenna device having a large received power and the high-frequency circuit section 42.
  • the housing 40 of the mobile phone main body 39 protects the antenna devices 19A and 19B from mechanical shock. This extends the life of the antenna devices 19A and 19B.
  • good communication quality can be obtained by suppressing the influence of the human body on the transmission and reception performance of radio waves when using a mobile phone.
  • the diversity communication function may be improved by arranging the two antenna devices 19A and 19B in a positional relationship in a direction orthogonal to each other.
  • the degree of freedom in designing the mobile phone main body 39 can be increased. Furthermore, since a matching circuit for impedance matching is not required, the cost of the mobile phone can be reduced.
  • this wireless device impedance characteristics in a desired frequency band can be easily set without a matching circuit.
  • this wireless device is equipped with two small and thin antenna devices having high bandwidth, high sensitivity and high productivity. Therefore, the antenna device can be protected from mechanical shock by the housing of the wireless device. At the same time, the degree of freedom in designing the wireless device itself can be increased. In addition, adjustments for impedance matching Since no integrated circuit is required, the cost of the wireless device can be reduced. Also, due to the di-persistence function of the two antenna devices, the two antenna devices are compared with each other even with a weak electric field, and the antenna device with the larger received power is made to function. This makes it possible to provide a wireless device with good call quality. Industrial applicability
  • the present invention it is possible to provide a highly productive built-in antenna device which is small, thin, and can realize a wide band, a high sensitivity, and a multi-band, and can easily perform impedance adjustment. .
  • the antenna device of the present invention incorporated in a wireless device, the antenna device is protected from external mechanical shock.
  • the wireless device is made to be able to cope with multi-band, and has a wide band and high sensitivity.
  • the space required for the antenna device mounting portion in the wireless device is reduced.
  • the wireless device can be reduced in size and thickness.
  • impedance characteristics corresponding to the desired frequency band can be easily obtained. Therefore, a complicated impedance matching circuit composed of an LC element is not required in the high-frequency circuit section of the wireless device, and an inexpensive wireless device is provided.

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Abstract

Cette invention se rapporte à un dispositif antenne de petite taille, mince, de longue portée et de forte sensibilité dont les caractéristiques d'impédance sont faciles à régler. Dans ce dispositif, un premier élément d'antenne en forme de plaque est placé au-dessus d'une plaque conductrice de terre comprenant une première borne connectée électriquement à la plaque conductrice de terre, une seconde borne connectée électriquement au corps de l'appareil radio à une distance prédéterminée de la première borne et au moins un élément conducteur de rayonnement. Le second élément d'antenne en forme de plaque comporte une plaque conductrice de terre et au moins un élément conducteur de rayonnement qui n'est pas connecté directement au premier élément d'antenne. Au moins un élément conducteur de rayonnement du second élément est placé entre la plaque conductrice de terre et le premier élément d'antenne. Les dimensions de la plaque conductrice de terre, du premier élément d'antenne, du second élément et de l'entrefer qui les sépare sont réglées en fonction des caractéristiques d'impédance et de largeur de bande souhaitées.
PCT/JP2002/004077 2001-04-27 2002-04-24 Dispositif antenne et appareil radio WO2002089255A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10292326T DE10292326T5 (de) 2001-04-27 2002-04-24 Antennenvorrichtung und drahtlose Vorrichtung die diese verwendet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001131885A JP2002330023A (ja) 2001-04-27 2001-04-27 アンテナ装置およびそれを用いた無線装置
JP2001-131885 2001-04-27

Publications (1)

Publication Number Publication Date
WO2002089255A1 true WO2002089255A1 (fr) 2002-11-07

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JP (1) JP2002330023A (fr)
CN (1) CN1266803C (fr)
DE (1) DE10292326T5 (fr)
WO (1) WO2002089255A1 (fr)

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JP6098812B2 (ja) * 2013-05-30 2017-03-22 三菱マテリアル株式会社 アンテナ装置
JP7404031B2 (ja) 2019-10-29 2023-12-25 日本航空電子工業株式会社 アンテナ
JP7475126B2 (ja) * 2019-10-29 2024-04-26 日本航空電子工業株式会社 アンテナ

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JPS6047502A (ja) * 1983-08-26 1985-03-14 Nippon Telegr & Teleph Corp <Ntt> 携帯形ダイバ−シチ無線機
JPH0314813U (fr) * 1989-06-27 1991-02-14
JPH0758539A (ja) * 1993-08-13 1995-03-03 Matsushita Electric Ind Co Ltd マイクロストリップアンテナ
JPH1093332A (ja) * 1996-09-13 1998-04-10 Nippon Antenna Co Ltd 複共振逆ｆ型アンテナ
JP2000068736A (ja) * 1998-08-21 2000-03-03 Toshiba Corp 多周波アンテナ
JP2000261243A (ja) * 1999-03-04 2000-09-22 Nippon Antenna Co Ltd 逆ｆ型アンテナ
JP2000261233A (ja) * 1999-03-05 2000-09-22 Matsushita Electric Ind Co Ltd アンテナ装置
JP2001053528A (ja) * 1999-08-12 2001-02-23 Murata Mfg Co Ltd 表面実装型アンテナの周波数切り換え構造およびその構造を備えた通信装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047502A (ja) * 1983-08-26 1985-03-14 Nippon Telegr & Teleph Corp <Ntt> 携帯形ダイバ−シチ無線機
JPH0314813U (fr) * 1989-06-27 1991-02-14
JPH0758539A (ja) * 1993-08-13 1995-03-03 Matsushita Electric Ind Co Ltd マイクロストリップアンテナ
JPH1093332A (ja) * 1996-09-13 1998-04-10 Nippon Antenna Co Ltd 複共振逆ｆ型アンテナ
JP2000068736A (ja) * 1998-08-21 2000-03-03 Toshiba Corp 多周波アンテナ
JP2000261243A (ja) * 1999-03-04 2000-09-22 Nippon Antenna Co Ltd 逆ｆ型アンテナ
JP2000261233A (ja) * 1999-03-05 2000-09-22 Matsushita Electric Ind Co Ltd アンテナ装置
JP2001053528A (ja) * 1999-08-12 2001-02-23 Murata Mfg Co Ltd 表面実装型アンテナの周波数切り換え構造およびその構造を備えた通信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009529286A (ja) * 2006-03-20 2009-08-13 イー．エム．ダブリュ．アンテナ カンパニー リミテッド Ｖｈｆ及びｕｈｆ信号受信用二重帯域アンテナ及び無線端末装置

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