JPH07176945A - Printed antenna - Google Patents
Printed antennaInfo
- Publication number
- JPH07176945A JPH07176945A JP32156093A JP32156093A JPH07176945A JP H07176945 A JPH07176945 A JP H07176945A JP 32156093 A JP32156093 A JP 32156093A JP 32156093 A JP32156093 A JP 32156093A JP H07176945 A JPH07176945 A JP H07176945A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- dielectric constant
- dielectric substrate
- printed antenna
- female thread
- 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.)
- Withdrawn
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
【発明の詳細な説明】本発明は、ＧＰＳアンテナ等に用
いられるプリントアンテナに関するもので、特に、周波
数を調整できるプリントアンテナに関するものである。The present invention relates to a print antenna used for a GPS antenna or the like, and more particularly to a print antenna whose frequency can be adjusted.
【従来の技術】近年、ＧＰＳシステムなどにおいて用い
られるアンテナは、車など移動体に搭載される物がほと
んどで、小型アンテナが必要とされてきた、その中で、
たとえば、プリントアンテナの利用が考えられている。
このプリントアンテナは、誘電体で形成された基板の表
面に放射電極を形成し、裏面には接地電極が形成されて
いる。図３は上記プリントアンテナの斜視図である。誘
電体基板（１）の表面に放射電極（２）が形成され、裏
面には接地電極（３）が形成されている。この放射電極
（２）には、丸型、角形のものがあり、その形状と大き
さを工夫することにより受信周波数を調整することがで
きる。また、この受信周波数を調整する方法としては、
誘電体基板（１）の材料の誘電率を調整したり、誘電体
基板（１）の厚みを調整する方法が用いられた。しか
し、これらの方法では受信周波数の微調整をするのが困
難で、電極を削ったり、誘電体基板（１）の絶縁材料を
削ったりして周波数を合わせ込むことが行われている。2. Description of the Related Art In recent years, most antennas used in GPS systems and the like are mounted on a moving body such as a car, and a small antenna has been required.
For example, use of a printed antenna has been considered.
This printed antenna has a radiation electrode formed on the front surface of a substrate made of a dielectric material and a ground electrode formed on the back surface. FIG. 3 is a perspective view of the printed antenna. A radiation electrode (2) is formed on the front surface of the dielectric substrate (1), and a ground electrode (3) is formed on the back surface. The radiation electrode (2) is of a round shape or a square shape, and the reception frequency can be adjusted by devising its shape and size. Also, as a method of adjusting this reception frequency,
A method of adjusting the dielectric constant of the material of the dielectric substrate (1) or adjusting the thickness of the dielectric substrate (1) was used. However, it is difficult to finely adjust the reception frequency by these methods, and the frequencies are adjusted by cutting the electrodes or the insulating material of the dielectric substrate (1).
【発明が解決しようとする課題】本発明は、上記事情に
鑑みてなされたものであり、電極を削ったり、誘電体基
板の絶縁材料を削ったりせず、プリントアンテナの受信
周波数の調整を容易に行うことができるプリントアンテ
ナを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and facilitates adjustment of the reception frequency of a printed antenna without scraping the electrodes or the insulating material of the dielectric substrate. It aims at providing the printed antenna which can be performed.
【課題を解決するための手段】本発明の請求項１に係る
プリントアンテナは、誘電体基板（１）の表面に放射電
極（２）を、裏面に接地電極（３）を具備したプリント
アンテナにおいて、誘電体基板（１）の側面に雌ねじ孔
（４）を穿設し、該雌ねじ孔（４）に誘電体より形成さ
れた雄ねじ柱（５）が脱着自在に螺合することを特徴と
する。また、本発明の請求項２に係るプリントアンテナ
は、誘電体基板（１）の表面に放射電極（２）を、裏面
に接地電極（３）を具備したプリントアンテナにおい
て、誘電体基板（１）の側面に嵌合溝（６）を形成し、
該嵌合溝（６）に誘電体より形成された嵌合片（７）が
脱着自在に嵌合することを特徴とする。A printed antenna according to claim 1 of the present invention is a printed antenna having a radiation electrode (2) on the front surface of a dielectric substrate (1) and a ground electrode (3) on the back surface. A female screw hole (4) is formed in the side surface of the dielectric substrate (1), and a male screw column (5) made of a dielectric material is detachably screwed into the female screw hole (4). . A printed antenna according to a second aspect of the present invention is a printed antenna having a radiation electrode (2) on a front surface of a dielectric substrate (1) and a ground electrode (3) on a back surface of the dielectric substrate (1). Form the fitting groove (6) on the side of
It is characterized in that a fitting piece (7) made of a dielectric is detachably fitted into the fitting groove (6).
【作用】本発明の請求項１に係るプリントアンテナによ
ると、誘電体基板の側面に穿設する雌ねじ孔と、誘電体
より形成された雄ねじ柱によりプリントアンテナが構成
されるため、雌ねじ孔に雄ねじ柱を脱着自在に螺合する
ことが可能となり、雄ねじ柱の出し入れによりプリント
アンテナの誘電率を変化させることができる。本発明の
請求項２に係るプリントアンテナによると、誘電体基板
の側面に形成された嵌合溝と、誘電体より形成された嵌
合片によりプリントアンテナが構成されるため、嵌合溝
に嵌合片を脱着自在に嵌合することが可能となり、嵌合
片の出し入れによりプリントアンテナの誘電率を変化さ
せることができる。一般に、このようなアンテナは誘電
率により受信周波数が決まり、受信周波数は、誘電率に
反比例する。以下、本発明のプリントアンテナについて
説明する。According to the printed antenna of claim 1 of the present invention, since the printed antenna is composed of the female screw hole formed on the side surface of the dielectric substrate and the male screw column formed of the dielectric, the male screw is formed in the female screw hole. The column can be detachably screwed, and the permittivity of the printed antenna can be changed by inserting and removing the male screw column. According to the printed antenna of claim 2 of the present invention, since the printed antenna is configured by the fitting groove formed on the side surface of the dielectric substrate and the fitting piece formed of the dielectric, the printed antenna is fitted into the fitting groove. The fitting piece can be detachably fitted, and the permittivity of the printed antenna can be changed by taking the fitting piece in and out. Generally, the reception frequency of such an antenna is determined by the dielectric constant, and the reception frequency is inversely proportional to the dielectric constant. The printed antenna of the present invention will be described below.
実施例１ 図１は本発明の実施例を示すプリントアンテナの斜視図
である。誘電体基板（１）の表面に放射電極（２）を形
成し、裏面には接地電極（３）が形成されている。放射
電極（２）と接地電極（３）の間に位置する誘電体基板
（１）の側面には、上記電極に対して平行に伸びる雌ね
じ孔（４）が形成されている。この雌ねじ孔（４）を形
成することにより同じ材質で同じ寸法の誘電体基板
（１）にくらべて誘電率がさがる。また、誘電体基板
（１）にくらべ高誘電率の材料で雄ねじ柱（５）を作成
し、該雌ねじ孔（４）に螺合する。この雌ねじ孔（４）
に雄ねじ柱（５）が螺合する深さを変更することによ
り、誘電体基板（１）の誘電率を変更することができ
る。つまり、誘電体基板（１）の誘電率を上げたいとき
は雄ねじ柱（５）を深くねじ込み、誘電率を下げたいと
きは浅くねじ込む。上記高誘電率で雄ねじ柱（５）の材
料としては、ポリフェニレンオキサイド樹脂組成物やセ
ラミックなどが用いられる。このように雄ねじ柱（５）
を螺合することにより誘電体基板（ １の誘電率を調整
することができ、該プリントアンテナの受信周波数を微
調整することができる。 実施例２ 図２は本発明の実施例を示すプリントアンテナの斜視図
である。誘電体基板（１）の表面に放射電極（２）を形
成し、裏面には接地電極（３）が形成されている。放射
電極（２）と接地電極（３）の間に位置する誘電体基板
（１）の側面には、側面に対して平行に伸びる嵌合溝
（６）が形成されている。この嵌合溝（６）を形成する
ことにより同じ材質で同じ寸法の誘電体基板（１）にく
らべて誘電率がさがる。また、誘電体基板（１）にくら
べ高誘電率の材料で嵌合片（７）を作成し、該嵌合溝
（６）に嵌合する。この嵌合片（７）が嵌合溝（６）に
嵌合する深さを変更することにより、誘電体基板（１）
の誘電率を変更することができる。つまり、誘電体基板
（１）の誘電率を上げたいときは嵌合片（７）を深く押
し込み、誘電率を下げたいときは浅く押し込む。上記高
誘電率で嵌合片（７）の材料としては、ポリフェニレン
オキサイド樹脂組成物やセラミックなどが用いられる。
このように嵌合片（７）を嵌合することにより誘電体基
板（１）の誘電率を調整することができ、該プリントア
ンテナの受信周波数を微調整することができる。Embodiment 1 FIG. 1 is a perspective view of a printed antenna showing an embodiment of the present invention. A radiation electrode (2) is formed on the front surface of the dielectric substrate (1), and a ground electrode (3) is formed on the back surface. A female screw hole (4) extending parallel to the electrode is formed on the side surface of the dielectric substrate (1) located between the radiation electrode (2) and the ground electrode (3). By forming the female screw hole (4), the dielectric constant is reduced as compared with the dielectric substrate (1) made of the same material and having the same size. Further, the male screw column (5) is made of a material having a higher dielectric constant than the dielectric substrate (1) and screwed into the female screw hole (4). This female screw hole (4)
The dielectric constant of the dielectric substrate (1) can be changed by changing the depth at which the male screw column (5) is screwed. That is, the male screw column (5) is deeply screwed in to increase the dielectric constant of the dielectric substrate (1), and shallowly screwed in to decrease the dielectric constant. As the material of the male screw column (5) having a high dielectric constant, a polyphenylene oxide resin composition, ceramic or the like is used. Like this, male screw column (5)
It is possible to adjust the permittivity of the dielectric substrate (1) by screwing and to finely adjust the reception frequency of the printed antenna. Embodiment 2 FIG. 2 shows an embodiment of the present invention. The radiation electrode (2) is formed on the front surface of the dielectric substrate (1), and the ground electrode (3) is formed on the back surface of the dielectric substrate (1). A fitting groove (6) extending parallel to the side surface is formed on a side surface of the dielectric substrate (1) located between the dielectric substrates (1). The dielectric constant is smaller than that of the dielectric substrate (1) of a size, and the fitting piece (7) is made of a material having a higher dielectric constant than that of the dielectric substrate (1), and the fitting groove (6) is By changing the depth at which this fitting piece (7) fits into the fitting groove (6), the dielectric Plate (1)
The dielectric constant of can be changed. That is, when the dielectric constant of the dielectric substrate (1) is desired to be increased, the fitting piece (7) is pushed deeply, and when the dielectric constant is desired to be lowered, it is pushed shallowly. As the material of the fitting piece (7) having a high dielectric constant, a polyphenylene oxide resin composition, ceramic or the like is used.
By thus fitting the fitting piece (7), the dielectric constant of the dielectric substrate (1) can be adjusted, and the reception frequency of the printed antenna can be finely adjusted.
【発明の効果】本発明のプリントアンテナを用いること
により、電極を削ったり、誘電体基板を削ったりするこ
となく、容易に誘電体基板の誘電率を変更することが可
能となり、受信周波数に対応する周波数の微調整が可能
となる。By using the printed antenna of the present invention, it becomes possible to easily change the dielectric constant of the dielectric substrate without scraping the electrodes or the dielectric substrate, and to cope with the receiving frequency. Fine adjustment of the frequency to be performed becomes possible.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施例１に係るプリントアンテナの斜
視図。FIG. 1 is a perspective view of a printed antenna according to a first embodiment of the invention.
【図２】本発明の実施例２に係るプリントアンテナの斜
視図。FIG. 2 is a perspective view of a printed antenna according to a second embodiment of the invention.
【図３】従来のプリントアンテナの斜視図。FIG. 3 is a perspective view of a conventional printed antenna.
１ 誘電体基板 ２ 放射電極 ３ 接地電極 ４ 雄ねじ孔 ５ 雌ねじ柱 ６ 嵌合溝 ７ 嵌合片 1 Dielectric Substrate 2 Radiation Electrode 3 Grounding Electrode 4 Male Screw Hole 5 Female Screw Pillar 6 Fitting Groove 7 Fitting Piece
Claims (2)
（２）を、裏面に接地電極（３）を具備したプリントア
ンテナにおいて、誘電体基板（１）の側面に雌ねじ孔
（４）を穿設し、該雌ねじ孔（４）に誘電体より形成さ
れた雄ねじ柱（５）が脱着自在に螺合することを特徴と
するプリントアンテナ。1. A printed antenna comprising a radiation electrode (2) on the front surface of a dielectric substrate (1) and a ground electrode (3) on the back surface, and a female screw hole (4) on the side surface of the dielectric substrate (1). A printed antenna characterized in that a male screw column (5) formed of a dielectric material is detachably screwed into the female screw hole (4).
（２）を、裏面に接地電極（３）を具備したプリントア
ンテナにおいて、誘電体基板（１）の側面に嵌合溝
（６）を形成し、該嵌合溝（６）に誘電体より形成され
た嵌合片（７）が脱着自在に嵌合することを特徴とする
プリントアンテナ。 【産業上の利用分野】2. A printed antenna having a radiation electrode (2) on a front surface of a dielectric substrate (1) and a ground electrode (3) on a back surface, and a fitting groove (6) on a side surface of the dielectric substrate (1). And a fitting piece (7) made of a dielectric material is detachably fitted into the fitting groove (6). [Industrial applications]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32156093A JPH07176945A (en) | 1993-12-21 | 1993-12-21 | Printed antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32156093A JPH07176945A (en) | 1993-12-21 | 1993-12-21 | Printed antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07176945A true JPH07176945A (en) | 1995-07-14 |
Family
ID=18133936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32156093A Withdrawn JPH07176945A (en) | 1993-12-21 | 1993-12-21 | Printed antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07176945A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11122032A (en) * | 1997-10-11 | 1999-04-30 | Yokowo Co Ltd | Microstrip antenna |
| JPH11136023A (en) * | 1997-10-27 | 1999-05-21 | Nec Corp | Micro strip antenna |
| JP2006033217A (en) * | 2004-07-14 | 2006-02-02 | Nippon Telegr & Teleph Corp <Ntt> | Microstripline and characteristic impedance control method |
| JP2006053833A (en) * | 2004-08-13 | 2006-02-23 | Fujitsu Ltd | Rfid tag and its manufacturing method |
| US7379026B2 (en) | 2004-07-02 | 2008-05-27 | Lenovo Pte. Ltd. | Electronic device with antenna, antenna structure, and method for adjusting antenna or electronic device |
-
1993
- 1993-12-21 JP JP32156093A patent/JPH07176945A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11122032A (en) * | 1997-10-11 | 1999-04-30 | Yokowo Co Ltd | Microstrip antenna |
| JPH11136023A (en) * | 1997-10-27 | 1999-05-21 | Nec Corp | Micro strip antenna |
| US7379026B2 (en) | 2004-07-02 | 2008-05-27 | Lenovo Pte. Ltd. | Electronic device with antenna, antenna structure, and method for adjusting antenna or electronic device |
| JP2006033217A (en) * | 2004-07-14 | 2006-02-02 | Nippon Telegr & Teleph Corp <Ntt> | Microstripline and characteristic impedance control method |
| JP2006053833A (en) * | 2004-08-13 | 2006-02-23 | Fujitsu Ltd | Rfid tag and its manufacturing method |
| JP4653440B2 (en) * | 2004-08-13 | 2011-03-16 | 富士通株式会社 | RFID tag and manufacturing method thereof |
| US7916032B2 (en) | 2004-08-13 | 2011-03-29 | Fujitsu Limited | Radio frequency identification (RFID) tag and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010306 |