JP3255027B2 - Surface mount antenna and communication device using the same - Google Patents
Surface mount antenna and communication device using the sameInfo
- Publication number
- JP3255027B2 JP3255027B2 JP19624396A JP19624396A JP3255027B2 JP 3255027 B2 JP3255027 B2 JP 3255027B2 JP 19624396 A JP19624396 A JP 19624396A JP 19624396 A JP19624396 A JP 19624396A JP 3255027 B2 JP3255027 B2 JP 3255027B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- base
- surface mount
- communication device
- mount antenna
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯電話機等の移
動体通信機器、無線ＬＡＮ(Local Area Network)に用い
られる表面実装型アンテナ及びそれを用いた通信機に関
する。The present invention relates to a mobile communication device such as a portable telephone, a surface mount antenna used for a wireless LAN (Local Area Network), and a communication device using the same.
【０００２】[0002]
【従来の技術】従来の表面実装型アンテナ、例えば誘電
体を装荷した起電流型の表面実装型アンテナ５０を図４
に示す。５１は誘電体基板であり、誘電体基板５１の対
向する側面に開口する貫通孔５２を誘電体基板５１の内
部に、貫通孔５２の内周に放射電極５３を設ける。そし
て、貫通孔５２が開口した一方側面には、接地電極５４
ａ、５４ｂ及び給電電極５５が、給電電極５５が接地電
極５４ａ、５４ｂに挟まれた状態で設けられる。一方、
貫通孔５２が開口した他方端面には、容量装荷電極５６
が設けられる。2. Description of the Related Art FIG. 4 shows a conventional surface mount antenna, for example, an electromotive force type surface mount antenna 50 loaded with a dielectric.
Shown in Reference numeral 51 denotes a dielectric substrate. A through-hole 52 is formed in the dielectric substrate 51, and a radiation electrode 53 is provided on the inner periphery of the through-hole 52. A ground electrode 54 is provided on one side surface where the through hole 52 is opened.
a and 54b and the power supply electrode 55 are provided in a state where the power supply electrode 55 is sandwiched between the ground electrodes 54a and 54b. on the other hand,
On the other end face where the through hole 52 is opened, a capacitance loading electrode 56 is provided.
Is provided.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記の従来
の表面実装型アンテナにおいては、貫通孔を設ける工
程、さらには、この貫通孔の内周に放射電極を形成する
繁雑な工程が必要となり、コストアップになるという問
題点があった。また、貫通孔の内周に形成された放射電
極の放射抵抗やリアクタンス成分は、貫通孔の径に起因
して生じるが、これらの成分を小さくするために、貫通
孔の径を小さくすると、その貫通孔の内周に放射電極を
形成することが困難となり、特性パラメータの設計に制
限を受けるという問題点もあった。さらに、貫通孔はス
トレート孔しか形成できず、放射電極を長くすることが
できないという問題点もあった。However, the above-mentioned conventional surface mount antenna requires a step of providing a through hole and a complicated step of forming a radiation electrode on the inner periphery of the through hole. There was a problem that the cost was increased. Further, the radiation resistance and reactance component of the radiation electrode formed on the inner periphery of the through-hole are caused by the diameter of the through-hole. To reduce these components, if the diameter of the through-hole is reduced, the There is also a problem that it becomes difficult to form a radiation electrode on the inner periphery of the through hole, and the design of characteristic parameters is limited. Further, there is another problem that only a straight hole can be formed in the through hole, and the length of the radiation electrode cannot be increased.
【０００４】また、貫通孔の内部に放射電極を形成する
従来の表面実装型アンテナは、容量成分及びインダクタ
ンス成分の関係から小形化に制限があり、これを搭載し
た従来の通信機も小形化が困難であるという問題点もあ
った。The conventional surface mount antenna having a radiation electrode formed in a through hole has a limitation in miniaturization due to the relationship between a capacitance component and an inductance component, and a conventional communication device equipped with the antenna is also miniaturized. There was also a problem that it was difficult.
【０００５】本発明は、このような問題点を解決するた
めになされたものであり、貫通孔を必要とせず、さらに
は放射電極を長くすることができる小形の表面実装型ア
ンテナ及びそれを用いた通信機を提供することを目的と
する。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and does not require a through-hole. Further, the present invention has a small surface-mounting antenna capable of elongating a radiation electrode, and a use thereof. The purpose of the present invention is to provide a communication device.
【０００６】[0006]
【課題を解決するための手段】上述する問題点を解決す
るため本発明は、誘電材料あるいは磁性材料からなり、
相対する主面と該主面間を連結する側面を備えた基体
と、前記基体の一方主面に、互いに隔絶して設けられた
給電電極及び接地電極と、前記基体の他方主面に設けら
れた容量装荷電極と、前記基体の側面に沿って螺旋状に
巻回され、両端に前記給電電極と前記容量装荷電極がそ
れぞれ接続された放射電極と、を備えたことを特徴とす
る。In order to solve the above-mentioned problems, the present invention comprises a dielectric material or a magnetic material,
A base having an opposing main surface and a side surface connecting the main surfaces; a power supply electrode and a ground electrode provided on one main surface of the base so as to be separated from each other; and provided on the other main surface of the base. And a radiation electrode spirally wound along the side surface of the base body and connected at both ends to the power supply electrode and the capacitance loading electrode, respectively.
【０００７】また、前記基体を直方体状としたことを特
徴とする。[0007] Further, the present invention is characterized in that the base has a rectangular parallelepiped shape.
【０００８】また、請求項１あるいは請求項２に記載の
表面実装型アンテナを実装してなることを特徴とする。[0008] A surface-mounted antenna according to claim 1 or 2 is mounted.
【０００９】本発明の表面実装型アンテナによれば、放
射電極を基体の側面に沿って螺旋状に巻回しているた
め、放射電極の実効長を長くすることができる。According to the surface mount antenna of the present invention, since the radiation electrode is spirally wound along the side surface of the base, the effective length of the radiation electrode can be increased.
【００１０】本発明の通信機によれば、実装容積が小さ
い表面実装型アンテナを搭載しているため、一層の小形
化を図ることできる。[0010] According to the communication device of the present invention, since the surface mount antenna having a small mounting volume is mounted, the size can be further reduced.
【００１１】[0011]
【発明の実施の形態】以下、図面を参照して本発明の実
施例を説明する。図１は、本発明に係る表面実装型アン
テナの第１の実施例の斜視図である。１は誘電材料から
なる直方体状の基体であり、相対する主面の一方主面２
ａの一端部近傍に給電電極３が形成され、この給電電極
３を除く箇所に接地電極４が形成される。また、他方主
面２ｂの略中央部には容量装荷電極５が形成される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a first embodiment of the surface mount antenna according to the present invention. Reference numeral 1 denotes a rectangular parallelepiped base made of a dielectric material.
The power supply electrode 3 is formed in the vicinity of one end of “a”, and the ground electrode 4 is formed at a location other than the power supply electrode 3. A capacitance loading electrode 5 is formed substantially at the center of the other main surface 2b.
【００１２】基体１の主面間を連結する側面には、螺旋
状に巻回される放射電極６が側面に沿うように形成さ
れ、この放射電極６の両端には給電電極３と容量装荷電
極５がそれぞれ接続される。以上のような構成で表面実
装型アンテナ１０は形成される。A radiation electrode 6 wound spirally is formed on the side surface connecting the main surfaces of the base 1 so as to extend along the side surface. 5 are respectively connected. The surface-mounted antenna 10 is formed with the above configuration.
【００１３】そして、給電電極３に印加された高周波信
号は、給電電極３を介して放射電極６から電波となって
送信される。また、放射電極６から受信された電波は、
給電電極３を介して高周波増幅部（図示せず）へと送ら
れる。The high-frequency signal applied to the power supply electrode 3 is transmitted as a radio wave from the radiation electrode 6 via the power supply electrode 3. The radio wave received from the radiation electrode 6 is
It is sent to a high-frequency amplifier (not shown) via the power supply electrode 3.
【００１４】図２は、本発明に係る表面実装型アンテナ
の第２の実施例の斜視図である。この表面実装型アンテ
ナ２０は、第１の実施例の表面実装型アンテナ１０と比
較して、基体７が円柱状になっている点で異なる。その
他は、第１の実施例の表面実装型アンテナ１０と同様な
ため、同一番号を付してその説明を省略する。FIG. 2 is a perspective view of a second embodiment of the surface mount antenna according to the present invention. This surface-mount antenna 20 differs from the surface-mount antenna 10 of the first embodiment in that the base 7 has a columnar shape. The other parts are the same as those of the surface-mounted antenna 10 of the first embodiment, and thus the same reference numerals are given and the description is omitted.
【００１５】この際、表面実装型アンテナ１０、２０の
共振周波数は、接地電極４と容量装荷電極５との間で形
成される容量と、放射電極６で形成されるインダクタン
スとで決定される。At this time, the resonance frequency of the surface mount antennas 10 and 20 is determined by the capacitance formed between the ground electrode 4 and the capacitance loading electrode 5 and the inductance formed by the radiation electrode 6.
【００１６】上記のように、第１及び第２の実施例の表
面実装型アンテナによれば、放射電極を基体の側面に沿
って螺旋状に巻回することにより、放射電極の実効長を
長くすることができるため、放射電極のインダクタンス
値を大きくでき、共振周波数を下げるとができる。従っ
て、共振周波数が同一の場合には、従来の表面実装型ア
ンテナより小形化することができる。As described above, according to the surface mount antennas of the first and second embodiments, the effective length of the radiation electrode is increased by spirally winding the radiation electrode along the side surface of the base. Therefore, the inductance value of the radiation electrode can be increased, and the resonance frequency can be reduced. Therefore, when the resonance frequency is the same, the size can be reduced as compared with the conventional surface mount antenna.
【００１７】また、基体の形状に関しては、円柱状に比
べ、直方体状の方が外周が長くなり、放射電極の実効長
を長くすることができるため、放射電極のインダクタン
ス値を大きくでき、共振周波数を下げることができる。
従って、共振周波数が同一の場合には、直方体状の方が
より小形化することができる。Further, as for the shape of the base, a rectangular parallelepiped shape has a longer outer periphery and a longer effective length of the radiation electrode than a columnar shape, so that the inductance value of the radiation electrode can be increased and the resonance frequency can be increased. Can be lowered.
Therefore, when the resonance frequencies are the same, the size of the rectangular parallelepiped can be further reduced.
【００１８】なお、上記の実施例においては、基体の形
状が直方体状及び円柱状の場合について説明したが、基
体は相対する主面とその主面間を連結する側面を備えて
いればよく、例えば立方体、三角柱等の多角柱がある。In the above embodiment, the case where the shape of the base is a rectangular parallelepiped or a column is described. However, the base may have a main surface facing each other and a side surface connecting the main surfaces. For example, there are polygonal pillars such as cubes and triangular pillars.
【００１９】また、基体の側面には、接地電極と繋がっ
ている接地端子が設けられていてもよい。Further, a ground terminal connected to the ground electrode may be provided on a side surface of the base.
【００２０】さらに、基体が誘電材料の場合について説
明したが、磁性材料であってもよい。Further, the case where the base is made of a dielectric material has been described, but it may be made of a magnetic material.
【００２１】図３は、本発明に係る通信機の一実施例の
斜視図である。表面実装型アンテナ１０、２０は、通信
機３０のセット基板（あるいはそのサブ基板）３１に給
電電極及び接地電極を半田付けして実装される。FIG. 3 is a perspective view of one embodiment of the communication device according to the present invention. The surface mount antennas 10 and 20 are mounted on a set board (or a sub board thereof) 31 of the communication device 30 by soldering a power supply electrode and a ground electrode.
【００２２】上記のように、本発明の実施例の通信機に
よれば、搭載する表面実装型アンテナの実装容積が小さ
くなるため、小形化を図ることができる。As described above, according to the communication device of the embodiment of the present invention, the mounting volume of the surface-mounted antenna to be mounted is reduced, so that the size can be reduced.
【００２３】[0023]
【発明の効果】請求項１の表面実装型アンテナによれ
ば、放射電極を基体の側面に沿って螺旋状に巻回してい
るため、放射電極の実効長を長くすることができる。従
って、共振周波数が同一の場合には、従来の表面実装型
アンテナに比べ、小形化することができる。According to the surface-mounted antenna of the first aspect, since the radiation electrode is spirally wound along the side surface of the base, the effective length of the radiation electrode can be increased. Therefore, when the resonance frequency is the same, the size can be reduced as compared with the conventional surface mount antenna.
【００２４】請求項２の表面実装型アンテナによれば、
基体が直方体であるため、基体の外周を長くすることが
できる。従って、放射電極の実効長をより長くすること
ができ、より小形化することができる。According to the surface mount antenna of the second aspect,
Since the base is a rectangular parallelepiped, the outer periphery of the base can be lengthened. Therefore, the effective length of the radiation electrode can be made longer, and the size can be made smaller.
【００２５】請求項３の通信機によれば、搭載する表面
実装型アンテナの実装容積が小さくなるため、小形化を
図ることができる。According to the communication device of the third aspect, the mounting volume of the surface mount antenna to be mounted is reduced, so that the size can be reduced.
【図１】本発明に係る表面実装型アンテナの第１の実施
例の斜視図である。FIG. 1 is a perspective view of a first embodiment of a surface mount antenna according to the present invention.
【図２】本発明に係る表面実装型アンテナの第２の実施
例の斜視図である。FIG. 2 is a perspective view of a second embodiment of the surface mount antenna according to the present invention.
【図３】本発明に係る通信機の一実施例の斜視図であ
る。FIG. 3 is a perspective view of one embodiment of a communication device according to the present invention.
【図４】従来の表面実装型アンテナを示す斜視図であ
る。FIG. 4 is a perspective view showing a conventional surface mount antenna.
１、７ 基体 ２ａ 一方主面 ２ｂ 他方主面 ３ 給電電極 ４ 接地電極 ５ 容量装荷電極 ６ 放射電極 １０、２０ 表面実装型アンテナ ３０ 通信機 DESCRIPTION OF SYMBOLS 1, 7 Base 2a One main surface 2b The other main surface 3 Power supply electrode 4 Ground electrode 5 Capacitive loading electrode 6 Radiation electrode 10, 20 Surface mount antenna 30 Communication device
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01Q 1/38 H01Q 11/08 H01Q 9/04 - 9/06 ──────────────────────────────────────────────────の Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) H01Q 1/38 H01Q 11/08 H01Q 9/04-9/06
Claims (3)
対する主面と該主面間を連結する側面を備えた基体と、
前記基体の一方主面に、互いに隔絶して設けられた給電
電極及び接地電極と、前記基体の他方主面に設けられた
容量装荷電極と、前記基体の側面に沿って螺旋状に巻回
され、両端に前記給電電極と前記容量装荷電極がそれぞ
れ接続された放射電極と、を備えたことを特徴とする表
面実装型アンテナ。1. A base made of a dielectric material or a magnetic material, having a main surface facing each other and a side surface connecting the main surfaces,
A power supply electrode and a ground electrode provided on one main surface of the base and separated from each other, a capacitance loading electrode provided on the other main surface of the base, and spirally wound along a side surface of the base. And a radiating electrode connected to the feed electrode and the capacitive loading electrode at both ends, respectively.
する請求項１に記載の表面実装型アンテナ。2. The surface-mounted antenna according to claim 1, wherein the base has a rectangular parallelepiped shape.
実装型アンテナを実装してなることを特徴とする通信
機。3. A communication device comprising the surface-mounted antenna according to claim 1 or 2 mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19624396A JP3255027B2 (en) | 1996-07-25 | 1996-07-25 | Surface mount antenna and communication device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19624396A JP3255027B2 (en) | 1996-07-25 | 1996-07-25 | Surface mount antenna and communication device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1041722A JPH1041722A (en) | 1998-02-13 |
| JP3255027B2 true JP3255027B2 (en) | 2002-02-12 |
Family
ID=16354577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19624396A Expired - Fee Related JP3255027B2 (en) | 1996-07-25 | 1996-07-25 | Surface mount antenna and communication device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3255027B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6356244B1 (en) | 1999-03-30 | 2002-03-12 | Ngk Insulators, Ltd. | Antenna device |
| JP2001217607A (en) | 2000-02-03 | 2001-08-10 | Ngk Insulators Ltd | Antenna system |
| JP4263972B2 (en) * | 2003-09-11 | 2009-05-13 | 京セラ株式会社 | Surface mount antenna, antenna device, and wireless communication device |
| WO2008032886A1 (en) * | 2006-09-15 | 2008-03-20 | Acetronix Co., Ltd. | Antenna for wireless communication and method of fabricating the same |
| JP4290744B2 (en) | 2007-03-12 | 2009-07-08 | 株式会社日本自動車部品総合研究所 | Antenna device |
| JP4849172B2 (en) | 2008-01-29 | 2012-01-11 | 株式会社村田製作所 | Antenna structure and wireless communication apparatus including the same |
| KR100958959B1 (en) * | 2008-04-29 | 2010-05-20 | 엘에스엠트론 주식회사 | End feed plane spiral antenna |
| JP5001218B2 (en) * | 2008-05-19 | 2012-08-15 | 株式会社日本自動車部品総合研究所 | Axial mode helical antenna |
| GB2477290B (en) * | 2010-01-27 | 2014-04-09 | Harris Corp | A dielectrically loaded antenna and radio communication apparatus |
| US8736513B2 (en) | 2010-01-27 | 2014-05-27 | Sarantel Limited | Dielectrically loaded antenna and radio communication apparatus |
| JP6151971B2 (en) * | 2013-05-29 | 2017-06-21 | 株式会社ヨコオ | Antenna device |
| US11150317B2 (en) | 2018-06-20 | 2021-10-19 | Denso International America, Inc. | Circular polarized angle of arrival measuring system |
-
1996
- 1996-07-25 JP JP19624396A patent/JP3255027B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1041722A (en) | 1998-02-13 |
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