JPH07273532A - Planar antenna - Google Patents
Planar antennaInfo
- Publication number
- JPH07273532A JPH07273532A JP5782494A JP5782494A JPH07273532A JP H07273532 A JPH07273532 A JP H07273532A JP 5782494 A JP5782494 A JP 5782494A JP 5782494 A JP5782494 A JP 5782494A JP H07273532 A JPH07273532 A JP H07273532A
- Authority
- JP
- Japan
- Prior art keywords
- planar antenna
- dielectric substrate
- radiation electrode
- electrode
- frequency
- 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- Withdrawn
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- Waveguide Aerials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、グローバルポジショニ
ングシステム（ＧＰＳ）や携帯用電話等のアンテナに用
いられる平面アンテナに関するもので、特に、周波数を
調整できる平面アンテナに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar antenna used as an antenna for a global positioning system (GPS) or a mobile phone, and more particularly to a planar antenna whose frequency can be adjusted.
【０００２】[0002]
【従来の技術】近年、ＧＰＳや携帯用電話等の移動体通
信システムが発展している。この移動体通信システムの
移動体に搭載されるアンテナは、小型化、軽量化された
アンテナが必要とされ、その中で、例えば、小型化、軽
量化が容易に図ることができる平面アンテナが利用され
ている。2. Description of the Related Art In recent years, mobile communication systems such as GPS and mobile phones have been developed. The antenna mounted on the mobile body of this mobile communication system requires a compact and lightweight antenna. Among them, for example, a planar antenna that can be easily miniaturized and lightweight is used. Has been done.
【０００３】上記移動体通信に使用される平面アンテナ
は、誘電体で形成された誘電体基板の上面に導電体で形
成された放射電極を形成し、下面には導電体で形成され
た接地電極が形成され、該放射電極の給電点に同軸ケー
ブル等の電線路を接続し、放射電極に給電をおこなって
用いられている。The planar antenna used in the mobile communication has a radiation electrode formed of a conductor on the upper surface of a dielectric substrate formed of a dielectric material, and a ground electrode formed of a conductor on the lower surface. Is formed, and an electric line such as a coaxial cable is connected to the feeding point of the radiation electrode to supply power to the radiation electrode.
【０００４】図５は上記平面アンテナの斜視図で、誘電
体基板５の上面に放射電極２が形成され、この放射電極
２には給電点４が設けられ、下面には接地電極３が形成
されている。この放射電極２の形状は、円形、多角形等
さまざまなものがあり、その形状と大きさを工夫するこ
とにより、受信周波数の周波数帯域を調整することがで
きる。また、この受信周波数をさらに精度良く合わせ込
む方法には、誘電体基板５の誘電材料の誘電率を調整し
たり、誘電体基板５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、さらに、図６に示す如く、例えば、方形
の放射電極２のコーナーを削って除去部９を形成した
り、放射電極２に導電体８を張り付けたりして、平面ア
ンテナが受信する周波数を合わせ込むことが行われてい
た。FIG. 5 is a perspective view of the above planar antenna. A radiation electrode 2 is formed on the upper surface of a dielectric substrate 5, a feeding point 4 is provided on the radiation electrode 2, and a ground electrode 3 is formed on the lower surface. ing. The radiation electrode 2 has various shapes such as a circle and a polygon, and the frequency band of the reception frequency can be adjusted by devising its shape and size. Further, as a method of adjusting the reception frequency more accurately, a method of adjusting the dielectric constant of the dielectric material of the dielectric substrate 5 or adjusting the thickness of the dielectric substrate 5 was used. However, it is difficult to finely adjust the reception frequency by these methods. Further, as shown in FIG. 6, for example, the corner of the rectangular radiation electrode 2 is shaved to form the removed portion 9 or the radiation electrode 2 is formed. It has been performed that the frequency received by the planar antenna is adjusted by sticking the conductor 8.
【０００５】[0005]
【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、移動体通信等に用いられる
平面アンテナが受信する周波数の合わせ込みを容易に行
うことができる平面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 provides a flat antenna which can easily adjust the frequencies received by the flat antenna used for mobile communication or the like. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１に係る
平面アンテナは、誘電体基板５の上面に放射電極２を、
下面に接地電極６を具備し、上記誘電体基板５と放射電
極２の外観形状が同一形状の平面アンテナにおいて、該
誘電体基板５の上面の周縁部と側面により形成された稜
線部７に面取り部３を形成したことを特徴とする平面ア
ンテナ。A planar antenna according to claim 1 of the present invention has a radiation electrode 2 on an upper surface of a dielectric substrate 5.
In the planar antenna having the ground electrode 6 on the lower surface and the outer shape of the dielectric substrate 5 and the radiation electrode 2 being the same, the chamfered edge portion 7 formed by the peripheral portion and the side surface of the upper surface of the dielectric substrate 5 is chamfered. A planar antenna characterized in that part 3 is formed.
【０００７】また、本発明の請求項２に係る平面アンテ
ナは、上記誘電体基板（５）の形状が、円形、楕円形、
方形、及び多角形のいずれかであることを特徴とするIn the planar antenna according to claim 2 of the present invention, the shape of the dielectric substrate (5) is circular, elliptical,
Characterized by being either a square or a polygon
【０００８】[0008]
【作用】本発明に係る平面アンテナによると、誘電体基
板５と放射電極２の外観形状が同一形状であるため、該
誘電体基板５の上面の全域に放射電極２が形成され、こ
の誘電体基板５の上面の周縁部と側面により形成された
稜線部７を面取りすることにより放射電極２を除去する
ことができる。According to the planar antenna of the present invention, since the dielectric substrate 5 and the radiation electrode 2 have the same external shape, the radiation electrode 2 is formed on the entire upper surface of the dielectric substrate 5, and the dielectric substrate 5 is formed. The radiation electrode 2 can be removed by chamfering the ridge line portion 7 formed by the peripheral edge portion and the side surface of the upper surface of the substrate 5.
【０００９】すなわち、誘電体基板５の稜線部７に面取
り部３を形成することにより、放射電極２が受信する所
望の周波数に合わせ込むことができる。That is, by forming the chamfered portion 3 on the ridge line portion 7 of the dielectric substrate 5, it is possible to adjust to the desired frequency received by the radiation electrode 2.
【００１０】上記平面アンテナ１を構成する誘電体基板
５を形成する誘電材料としては、エポキシ樹脂、ポリイ
ミド樹脂、ポリフェニレンオキサイド樹脂、ポリフルオ
ロエチレン樹脂、及びセラミックス等の単体、複合体の
いずれかを使用することができ、それぞれ異なった誘電
率を有するので、平面アンテナ１が受信する周波数に応
じて、誘電体基板５を形成する誘電材料を選択し、全体
の大きさ及び厚みを選択する。また、上記誘電体基板５
の上面の放射電極２及び下面の接地電極６は、導電性材
料で形成されており、銅、銀、金等を使用することがで
きる。As the dielectric material for forming the dielectric substrate 5 which constitutes the planar antenna 1, any one of epoxy resin, polyimide resin, polyphenylene oxide resin, polyfluoroethylene resin, ceramics, etc., or a composite is used. Since they have different dielectric constants, the dielectric material forming the dielectric substrate 5 is selected according to the frequency received by the planar antenna 1, and the overall size and thickness are selected. In addition, the dielectric substrate 5
The radiation electrode 2 on the upper surface and the ground electrode 6 on the lower surface are formed of a conductive material, and copper, silver, gold, or the like can be used.
【００１１】上記平面アンテナ１を構成する誘電体基板
５、放射電極２及び接地電極６の輪郭形状は特に限定す
るものではないが互いに相似形をしており、本平面アン
テナ１を搭載する移動体に応じて円形、楕円形、方形、
及び多角形のいずれかを選択することができる。The dielectric substrate 5, the radiation electrode 2 and the ground electrode 6 which form the planar antenna 1 are similar in shape to each other, but are not particularly limited. Circular, oval, square, according to
, And polygon can be selected.
【００１２】また、上記誘電体基板５の上面の周縁部と
側面により形成される稜線部７は、誘電体基板５の形状
に応じて、曲線や直線により形成され、さらに、この稜
線部７を面取りして形成される面取り部３も、誘電体基
板５の形状によりその形状を曲線で形成されるものや、
直線で形成されるもの、また、それらを組み合わせたも
のにより形成される。また、この面取り部３は、誘電体
基板５、放射電極２及び接地電極６の大きさと、合わせ
込む周波数によって、誘電体基板５の上面の周縁部の稜
線部７の一部に形成されるものや、該稜線部７の全てに
渡り形成されるものもある。The ridge line portion 7 formed by the peripheral portion and the side surface of the upper surface of the dielectric substrate 5 is formed by a curved line or a straight line in accordance with the shape of the dielectric substrate 5, and the ridge line portion 7 is further formed. The chamfered portion 3 formed by chamfering also has a curved shape depending on the shape of the dielectric substrate 5,
It is formed by a straight line or a combination thereof. Further, the chamfered portion 3 is formed on a part of the ridge line portion 7 on the peripheral portion of the upper surface of the dielectric substrate 5 depending on the sizes of the dielectric substrate 5, the radiation electrode 2 and the ground electrode 6 and the matching frequency. Alternatively, some are formed over the entire ridge line portion 7.
【００１３】以下、本発明の実施例を添付した図面に沿
って詳細に説明する。Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
【００１４】[0014]
【実施例】本発明の実施例を図１乃至図４により説明す
る。図１は本発明の実施例に係る平面アンテナの斜視図
であり、図２は上記平面アンテナの上面図で、図３は図
２のＡ−Ａで破断した断面図である。また、図４は面取
り部３を形成する前の平面アンテナの斜視図である。Embodiments of the present invention will be described with reference to FIGS. 1 is a perspective view of a planar antenna according to an embodiment of the present invention, FIG. 2 is a top view of the planar antenna, and FIG. 3 is a sectional view taken along line AA of FIG. 4 is a perspective view of the planar antenna before the chamfered portion 3 is formed.
【００１５】本発明に係る平面アンテナは、図１に示す
如く、誘電体基板５、放射電極２及び接地電極６より構
成されている。上記誘電体基板５は方形を成し、この誘
電体基板５の上面及び下面に形成されている放射電極２
及び接地電極６も同様に方形をしている。また、上記放
射電極２には給電点４が設けられている。さらに、この
平面アンテナ１は、誘電体基板５の上面の周縁部の四方
に面取り部３が設けられている。As shown in FIG. 1, the planar antenna according to the present invention comprises a dielectric substrate 5, a radiation electrode 2 and a ground electrode 6. The dielectric substrate 5 has a rectangular shape, and the radiation electrodes 2 are formed on the upper and lower surfaces of the dielectric substrate 5.
Similarly, the ground electrode 6 is also rectangular. Further, the radiation electrode 2 is provided with a feeding point 4. Further, in the planar antenna 1, chamfered portions 3 are provided on the upper surface of the dielectric substrate 5 on all four sides of the peripheral edge portion.
【００１６】この平面アンテナ１は、受信周波数１．５
ＧＨｚのＧＰＳに用いられるアンテナで、製造方法は、
上下両面全体に導電材料が貼着された積層板を用いて必
要な寸法に切断し、周囲を端面加工を行い、その後、所
要の周波数１．５ＧＨｚの電波を受信できるよう、上記
積層板の上面の周縁部の四方を面取りして上記導電材料
で形成された放射電極２及び誘電体基板５の一部を取り
除き、面取り部３形成することにより、図１の斜視図に
示すような構造で、図１のＡ−Ａで破断した、図２に示
すような断面を有する平面アンテナを得ることができ
る。This plane antenna 1 has a reception frequency of 1.5.
It is an antenna used for GHz GPS, and the manufacturing method is
The upper and lower surfaces of the above laminated plate are cut so as to have a necessary size by using a laminated plate in which conductive materials are adhered to the entire upper and lower surfaces, and the periphery is end face-processed, and then a radio wave having a required frequency of 1.5 GHz can be received. By chamfering the four sides of the peripheral edge of the radiation electrode 2 and a part of the dielectric substrate 5 formed of the above-mentioned conductive material to form a chamfered portion 3, a structure as shown in the perspective view of FIG. A plane antenna having a cross section as shown in FIG. 2, which is broken at AA in FIG. 1, can be obtained.
【００１７】この平面アンテナ１の誘電体基板５は正方
形で、その大きさは、縦、横の寸法ｄ１、ｄ２は、とも
に３０．０ｍｍである。また、該誘電体基板５の上面に
形成された導電材料から成る方形の放射電極２の大きさ
は縦ｄ３が２９．０ｍｍで横ｄ４が２８．５ｍｍの寸法
を有する。そして、給電点４はこの方形の誘電体基板５
の２つの対角線の交点からｄ５＝４．２ｍｍ離れた対角
線上に形成されている。すなわち、この平面アンテナ１
は、図４に示す、予め完成寸法より大きい縦、横の寸法
がともに３０．０ｍｍである上下両面全体に導電材料が
貼着された方形の積層板を用い、この積層板の上面の周
縁部と側面により形成される稜線部７を四方にわたり面
取りを行い、放射電極２の縦が２９．０ｍｍ、横が２
８．５ｍｍになるよう面取り部３を形成して、図１に示
す如き形状の平面アンテナを得るのである。The dielectric substrate 5 of the planar antenna 1 is square, and the size thereof is 30.0 mm in both vertical and horizontal dimensions d1 and d2. The size of the rectangular radiation electrode 2 made of a conductive material and formed on the upper surface of the dielectric substrate 5 has a length d3 of 29.0 mm and a width d4 of 28.5 mm. The feeding point 4 is the rectangular dielectric substrate 5
Is formed on a diagonal line distant from the intersection of the two diagonal lines of d5 = 4.2 mm. That is, this planar antenna 1
4 is a rectangular laminated plate in which a conductive material is pasted on the entire upper and lower surfaces, each of which is 30.0 mm in length and width, which is larger than the completed size in advance. The ridge line portion 7 formed by the side surface and the side surface is chamfered in four directions.
The chamfered portion 3 is formed to have a thickness of 8.5 mm to obtain a planar antenna having a shape as shown in FIG.
【００１８】上記平面アンテナに使用した積層板は、比
誘電率１０．５のポリフェニレンオキサイド樹脂をガラ
スクロスに含浸させプリプレグを得たのち、適当な枚数
を重ね合わせ、最外層に３５μｍの銅箔を配して加熱加
圧成形して得ることができる厚さ２．４ｍｍの両面銅張
り積層板（松下電工社製R4728 ）である。In the laminated plate used for the above planar antenna, a glass cloth was impregnated with a polyphenylene oxide resin having a relative dielectric constant of 10.5 to obtain a prepreg. It is a double-sided copper-clad laminate (R4728 manufactured by Matsushita Electric Works, Ltd.) having a thickness of 2.4 mm that can be placed and heat-pressed.
【００１９】このように面取り部３を形成することによ
り、放射電極２の面積を変更することができ、放射電極
２の面積と誘電体基板５の厚さにより決まる平面アンテ
ナの受信周波数を所望の周波数に合わせ込むことができ
る。By forming the chamfered portion 3 in this way, the area of the radiation electrode 2 can be changed, and the reception frequency of the planar antenna determined by the area of the radiation electrode 2 and the thickness of the dielectric substrate 5 can be set to a desired value. Can be tuned to frequency.
【００２０】[0020]
【発明の効果】本発明の平面アンテナを用いることによ
り、誘電体基板の表面の放射電極を削ったり、導電体を
貼ったりすることなく、容易に誘電体基板の上面に形成
された放射電極の面積を変更することができ、平面アン
テナの外観も損なうことなく、該平面アンテナが受信す
る周波数を、所望の周波数に合わせ込むことができる。By using the planar antenna of the present invention, the radiation electrode formed on the upper surface of the dielectric substrate can be easily formed without shaving the radiation electrode on the surface of the dielectric substrate or attaching a conductor. The area can be changed, and the frequency received by the planar antenna can be adjusted to a desired frequency without impairing the appearance of the planar antenna.
【図１】本発明の実施例に係る平面アンテナの斜視図で
ある。FIG. 1 is a perspective view of a planar antenna according to an exemplary embodiment of the present invention.
【図２】上記実施例の平面アンテナの上面図である。FIG. 2 is a top view of the planar antenna of the above embodiment.
【図３】上記実施例のＡ−Ａで破断した断面図である。FIG. 3 is a sectional view taken along line AA of the above embodiment.
【図４】上記実施例の平面アンテナの製造過程の説明に
用いる斜視図である。FIG. 4 is a perspective view used for explaining a manufacturing process of the planar antenna of the above embodiment.
【図５】従来の平面アンテナの斜視図である。FIG. 5 is a perspective view of a conventional planar antenna.
【図６】上記従来の平面アンテナの上面図である。FIG. 6 is a top view of the conventional planar antenna.
１ 平面アンテナ ２ 放射電極 ３ 面取り部 ４ 給電点 ５ 誘電体基板 ６ 接地電極 ７ 稜線部 ８ 導電体 1 Planar Antenna 2 Radiation Electrode 3 Chamfer 4 Feed Point 5 Dielectric Substrate 6 Grounding Electrode 7 Ridge 8 Conductor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡 英樹 大阪府門真市大字門真1048番地松下電工株 式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Oka 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.
Claims (2)
（２）を、下面に接地電極（６）を具備し、上記誘電体
基板（５）と放射電極（２）の外観形状が同一形状の平
面アンテナにおいて、該誘電体基板（５）の上面の周縁
部と側面により形成された稜線部（７）に面取り部
（３）を形成したことを特徴とする平面アンテナ。1. The dielectric substrate (5) comprises a radiation electrode (2) on the upper surface and a ground electrode (6) on the lower surface, and the dielectric substrate (5) and the radiation electrode (2) have the same external shape. A planar antenna having a shape, wherein a chamfered portion (3) is formed on a ridge line portion (7) formed by a peripheral portion and a side surface of an upper surface of the dielectric substrate (5).
楕円形、方形、及び多角形のいずれかであることを特徴
とする請求項１記載の平面アンテナ。2. The dielectric substrate (5) has a circular shape,
The planar antenna according to claim 1, wherein the planar antenna is one of an ellipse, a rectangle, and a polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782494A JPH07273532A (en) | 1994-03-28 | 1994-03-28 | Planar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5782494A JPH07273532A (en) | 1994-03-28 | 1994-03-28 | Planar antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07273532A true JPH07273532A (en) | 1995-10-20 |
Family
ID=13066679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5782494A Withdrawn JPH07273532A (en) | 1994-03-28 | 1994-03-28 | Planar antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07273532A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10256825A (en) * | 1997-03-07 | 1998-09-25 | Murata Mfg Co Ltd | Resonance frequency adjustment method for surface mount antenna and impedance adjustment method |
| JP2001339233A (en) * | 2000-05-29 | 2001-12-07 | Mitsumi Electric Co Ltd | Characteristics adjusting method for circularly polarized wave antenna |
| EP3206113A4 (en) * | 2014-10-09 | 2017-08-16 | ZTE Corporation | Touch screen and terminal |
-
1994
- 1994-03-28 JP JP5782494A patent/JPH07273532A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10256825A (en) * | 1997-03-07 | 1998-09-25 | Murata Mfg Co Ltd | Resonance frequency adjustment method for surface mount antenna and impedance adjustment method |
| JP2001339233A (en) * | 2000-05-29 | 2001-12-07 | Mitsumi Electric Co Ltd | Characteristics adjusting method for circularly polarized wave antenna |
| EP3206113A4 (en) * | 2014-10-09 | 2017-08-16 | ZTE Corporation | Touch screen and terminal |
| US10008766B2 (en) | 2014-10-09 | 2018-06-26 | Zte Corporation | Touch screen and terminal |
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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: 20010605 |