JPH01117403A - Dielectric antenna - Google Patents
Dielectric antennaInfo
- Publication number
- JPH01117403A JPH01117403A JP27315087A JP27315087A JPH01117403A JP H01117403 A JPH01117403 A JP H01117403A JP 27315087 A JP27315087 A JP 27315087A JP 27315087 A JP27315087 A JP 27315087A JP H01117403 A JPH01117403 A JP H01117403A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- dielectric
- water
- dielectric material
- dielectric constant
- 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.)
- Pending
Links
- 239000003989 dielectric material Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- -1 polyethylene Polymers 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 230000033558 biomineral tissue development Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
Landscapes
- Details Of Aerials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、製造が簡単で、所望の誘電率を容易に設定で
きる誘電体アンテナに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dielectric antenna that is easy to manufacture and allows a desired dielectric constant to be easily set.
［従来技術およびその問題点］ 従来、ＦＭ放送受信用室内アンテナとしては。[Prior art and its problems] Conventionally, as an indoor antenna for receiving FM broadcasts.
その形状を小型化するためにコイルやコンデンサを用い
たものがある。Some use coils and capacitors to reduce their size.
しかし、この種のアンテナは、構造的に複雑であり不安
定である。また、特性的にも十分とは言えず、調整が煩
雑であり、低コスト化が図れない等の問題点を有してい
た。However, this type of antenna is structurally complex and unstable. In addition, the characteristics are not satisfactory, adjustment is complicated, and costs cannot be reduced.
また、誘電体材料としてテフロン、ポリエチレン等を用
いると、誘電体のｔ、ａｎδは比較的良いが、誘電率が
十分でなく、アンテナの小型化が図れないという問題点
を有していた。Furthermore, when Teflon, polyethylene, or the like is used as the dielectric material, the dielectric has relatively good t and an δ, but the dielectric constant is insufficient and there is a problem in that the antenna cannot be miniaturized.
［問題点を解決するための手段］ 本発明による誘電体アンテナは。[Means for solving problems] A dielectric antenna according to the present invention.
誘電体材料として液体をベースとした材料を用いたこと
を特徴とする。It is characterized by using a liquid-based material as the dielectric material.
［作用］
アンテナエレメント内に」二記誘電体材料を注入するだ
けで容易に製造でき、しかも液体に所宅の材料を混合す
るだけで所望の誘電率を設定でき。[Function] It can be easily manufactured by simply injecting the dielectric material into the antenna element, and the desired dielectric constant can be set simply by mixing the desired material with the liquid.
アンテナサイズを自由に設定可能となる。The antenna size can be set freely.
［実施例］
以）゛、本、発明の実施例を図面を参照しながら詳細に
説明する。[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図（Ａ）は、本発明による誘電体アンテナの第１実
施例の模式的縦断面図、第１図ＩＯ）は、その模式的横
断面図である。FIG. 1(A) is a schematic vertical cross-sectional view of a first embodiment of a dielectric antenna according to the present invention, and FIG. 1 IO) is a schematic cross-sectional view thereof.
各図において、アンテナエレメントｌは金属軸１１と金
属外枠とを先端で短絡した同軸構造を有し、その内側に
誘電体材料２を充填したものである。誘電体材料２は、
後述するように水をベースとしており、シール１２によ
って閉じ込められている。出力は端子３から取り出され
る。In each figure, the antenna element l has a coaxial structure in which a metal shaft 11 and a metal outer frame are short-circuited at the tip, and the inside thereof is filled with a dielectric material 2. The dielectric material 2 is
It is water-based and is confined by a seal 12, as described below. The output is taken out from terminal 3.
このような構造のアンテナのエレメント長は。What is the element length of an antenna with this structure?
およそ誘電体材料２の誘電率の゛ト方根の逆数に比例す
る。したがって、誘電率が大きいほど、アンテナを小型
化することができる。It is approximately proportional to the reciprocal of the square root of the dielectric constant of the dielectric material 2. Therefore, the larger the dielectric constant, the more compact the antenna can be.
誘電体材料２は水、エチレングリ、コール、エタノール
等の液体をベースにするが、誘電率が約８０と大きい水
が小型化およびコストの点で望ましい。The dielectric material 2 is based on a liquid such as water, ethylene glycol, coal, ethanol, etc., but water having a high dielectric constant of about 80 is preferable from the viewpoint of miniaturization and cost.
しかし、水だけでは、凍結する恐れもあるために、凍結
防ＩＬのためにエチレングリコール又はエタノールとの
混合が望ましい。また、これらの混合によって誘電率を
調整することもできる。However, since water alone may cause freezing, it is desirable to mix it with ethylene glycol or ethanol for antifreeze IL. Moreover, the dielectric constant can also be adjusted by mixing these.
さらに、誘電率調整としては、水に適当量のポリエチレ
ン、セラミックス等の粉体又は粒体な加えてもよい。Furthermore, to adjust the dielectric constant, an appropriate amount of powder or granules of polyethylene, ceramics, etc. may be added to water.
このように所望の誘電率に設定された誘電体材料２をエ
レメント１内に注入するだけで製造できるために、製造
が極めて簡単となり、何等の材料力ＩＩ−Ｌも要しない
。Since the element 1 can be manufactured by simply injecting the dielectric material 2 having a desired dielectric constant into the element 1, the manufacturing is extremely simple and does not require any material strength II-L.
なお、シール１２としては、絶縁性プラスチックガラス
を用いることができる。Note that as the seal 12, insulating plastic glass can be used.
第２図（Ａ）および（Ｂ）は、それぞれ本発明の第２お
よび第３実施例の外観を示す斜視図である。FIGS. 2(A) and 2(B) are perspective views showing the external appearance of second and third embodiments of the present invention, respectively.
各図に示すようにアンテナエレメント１を円錐状又は角
錐状にすることによって、アンテナの周波数範囲を高帯
域化し、誘電率の温度特性を補正することができる。By forming the antenna element 1 into a conical or pyramidal shape as shown in each figure, the frequency range of the antenna can be increased and the temperature characteristics of the dielectric constant can be corrected.
第３図（Ａ）は、本発明の第４実施例の外観を示す斜視
図、第：Ｓ図（ｒＳ）は、そのアンブナ整合部の詳細を
示す部分的断面図である。FIG. 3(A) is a perspective view showing the external appearance of a fourth embodiment of the present invention, and FIG.
本実施例では、エレメント長しを１２ｃｍとして、誘電
体材料２として純水を用いた。また、絶縁性プラスチッ
クガラスのシール１２によって純水を閉じ込めた。In this example, the element length was 12 cm, and pure water was used as the dielectric material 2. Further, pure water was confined by a seal 12 made of insulating plastic glass.
エレメントｌの双方の金属外枠にわたって接続金属枠１
３が固定され、金属枠１３には端子１４および金属枠１
３と絶縁され金属軸１１に接続した端子１５が設けられ
ている。Connecting metal frame 1 across both metal outer frames of element l
3 is fixed, and the terminal 14 and the metal frame 1 are fixed to the metal frame 13.
A terminal 15 is provided which is insulated from the metal shaft 11 and connected to the metal shaft 11.
本実施例の誘電体アンテナの特性を次に示す。The characteristics of the dielectric antenna of this example are shown below.
第４図（Ａ）は、本実施例の誘電体アンテナの反射特性
を示すグラフ、第４図（Ｂ）は、標準ダイポール型アン
テナの反射特性を示すグラフである。FIG. 4(A) is a graph showing the reflection characteristics of the dielectric antenna of this example, and FIG. 4(B) is a graph showing the reflection characteristics of the standard dipole antenna.
図中のＳｌｌは、送信機よりケーブルを通じてアンテナ
に接続した場合のアンテナからの反射の比を表したもの
である。Sll in the figure represents the ratio of reflection from the antenna when the transmitter is connected to the antenna through a cable.
基本的にアンテナが完全に整合が取れていない場合、送
信機により出力された電波はケーブルを通じアンテナに
到達し、そこで反射され、また送信機側へ戻される。つ
まり損失が生じるわけであるから、整合をよく取ること
が必要となる。Basically, if the antennas are not perfectly matched, the radio waves output by the transmitter will reach the antenna through the cable, be reflected there, and be returned to the transmitter. In other words, a loss occurs, so it is necessary to ensure good matching.
グラフから分るように、本実施例は、標準ダイポール型
アンテナと同様の範囲で定在波比が下っている。すなわ
ち、ｌ／１０程度に小型化したにも拘らず、帯域幅が狭
くなっておらず、標準ダイポール型アンテナに比べて性
能的に劣っていないことを示している。As can be seen from the graph, in this example, the standing wave ratio is reduced in the same range as the standard dipole antenna. In other words, despite being downsized to about 1/10, the bandwidth is not narrowed and the performance is not inferior to that of the standard dipole antenna.
［発明の効果］
以上詳細に説明したように１本発明による誘電体アンテ
ナは、アンテナエレメント内に液体をベースとした誘電
体材料を注入するだけで容易に製造でき、しかも液体に
所望の材料を混合するだけで所望の誘電率を設定でき、
アンテナサイズを自由に設定可能となる。[Effects of the Invention] As explained in detail above, the dielectric antenna according to the present invention can be easily manufactured by simply injecting a liquid-based dielectric material into the antenna element, and moreover, the dielectric antenna according to the present invention can be easily manufactured by simply injecting a liquid-based dielectric material into the antenna element. You can set the desired dielectric constant just by mixing.
The antenna size can be freely set.
第１図（Ａ）は、本発明４こよる誘電体アンテナの第１
実施例の模式的縦断面図、第１図（Ｂ）は、その模式的
横断面図、
第２図（Ａ）およびＦＢ）は、それぞれ本発明の第２お
よび第３実施例の外観を示す斜視図、第３図（Ａ）は、
本発明の第４実施例の外観を示す斜視図、第３図（Ｂ）
は、そのアンテナ整合部の詳細を示す部分的断面図、
第４図（Ａ）は、本実施例の誘電体アンテナの反射特性
を示すグラフ、第４図（Ｂ）は、標準ダイポール型アン
テナの反射特性を示すグラフである。
置・・・アンテナエレメント
２・・・誘電体材料
３．１４％ １５・・・出力端子。
１１・・・金属軸
１２・・・シール
代理人 弁理士 山 下 穣 平
ＣＡ）＠１図
第２図
（Ａ） （８）FIG. 1(A) shows the first dielectric antenna according to the fourth aspect of the present invention.
FIG. 1(B) is a schematic longitudinal cross-sectional view of the embodiment, and FIG. 2(A) and FB) are external views of the second and third embodiments of the present invention, respectively. The perspective view, FIG. 3 (A),
A perspective view showing the appearance of the fourth embodiment of the present invention, FIG. 3(B)
is a partial cross-sectional view showing the details of the antenna matching part, FIG. 4(A) is a graph showing the reflection characteristics of the dielectric antenna of this example, and FIG. 4(B) is a graph of the standard dipole antenna. It is a graph showing reflection characteristics. Position...Antenna element 2...Dielectric material 3.14% 15...Output terminal. 11...Metal shaft 12...Seal agent Patent attorney Johei Yamashita CA) @1 Figure 2 (A) (8)
Claims (3)
たことを特徴とする誘電体アンテナ。(1) A dielectric antenna characterized in that a liquid-based material is used as the dielectric material.
範囲第１項記載の誘電体アンテナ。(2) The dielectric antenna according to claim 1, wherein the liquid is water.
誘電率に設定されることを特徴とする特許請求の範囲第
１項又は第２項記載の誘電体アンテナ。(3) The dielectric antenna according to claim 1 or 2, wherein the dielectric material is set to have a desired dielectric constant depending on the materials to be mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27315087A JPH01117403A (en) | 1987-10-30 | 1987-10-30 | Dielectric antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27315087A JPH01117403A (en) | 1987-10-30 | 1987-10-30 | Dielectric antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01117403A true JPH01117403A (en) | 1989-05-10 |
Family
ID=17523810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27315087A Pending JPH01117403A (en) | 1987-10-30 | 1987-10-30 | Dielectric antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01117403A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2436167A (en) * | 2006-03-16 | 2007-09-19 | Samsung Electro Mech | Liquid-coupled antenna built into a mobile communication device |
| CN104648111A (en) * | 2013-11-21 | 2015-05-27 | 扬州市新港电机有限公司 | Power driving and power generation integrated stepless speed regulating system of automobile |
-
1987
- 1987-10-30 JP JP27315087A patent/JPH01117403A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2436167A (en) * | 2006-03-16 | 2007-09-19 | Samsung Electro Mech | Liquid-coupled antenna built into a mobile communication device |
| GB2436167B (en) * | 2006-03-16 | 2009-12-02 | Samsung Electro Mech | Liquid coupled built-in antenna and mobile communication terminal |
| CN104648111A (en) * | 2013-11-21 | 2015-05-27 | 扬州市新港电机有限公司 | Power driving and power generation integrated stepless speed regulating system of automobile |
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