JPH0272013U - - Google Patents
Info
- Publication number
- JPH0272013U JPH0272013U JP15148188U JP15148188U JPH0272013U JP H0272013 U JPH0272013 U JP H0272013U JP 15148188 U JP15148188 U JP 15148188U JP 15148188 U JP15148188 U JP 15148188U JP H0272013 U JPH0272013 U JP H0272013U
- Authority
- JP
- Japan
- Prior art keywords
- sleeve element
- length
- sleeve
- wavelength
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Details Of Aerials (AREA)
Description
第１図ａは本考案第一実施例の斜視図。第１図
ｂは第一実施例の縦断面図。第２図は第一実施例
特性の測定結果を示す図。第３図は本考案第二実
施例特性の測定結果を示す図。第４図は本考案第
三実施例特性の測定結果を示す図。第５図ａは従
来例の斜視図。第５図ｂは従来例の縦断面図。
Ｃ……同軸管路、Ｃ１，Ｃ２……それぞれ同軸
管路の内部導体および外部導体、Ｅ……アンテナ
素子、Ｆ……周波数波帯、Ｇ……間隙、Ｉｓ……
充填された絶縁体、Ｓ１，Ｓ２……第一および第
二スリーブ素子、Ｔ……給電端子、ｌ０，ｌ１，
ｌ２……それぞれアンテナ素子、第一および第二
スリーブ素子の長さ、ａ〜ｇ……それぞれの測定
結果。
FIG. 1a is a perspective view of the first embodiment of the present invention. FIG. 1b is a longitudinal sectional view of the first embodiment. FIG. 2 is a diagram showing the measurement results of the characteristics of the first embodiment. FIG. 3 is a diagram showing the measurement results of the characteristics of the second embodiment of the present invention. FIG. 4 is a diagram showing the measurement results of the characteristics of the third embodiment of the present invention. FIG. 5a is a perspective view of a conventional example. FIG. 5b is a longitudinal sectional view of a conventional example. C...coaxial conduit, C1 , C2 ...inner conductor and outer conductor of coaxial conduit, respectively, E...antenna element, F...frequency band, G...gap, Is...
filled insulator, S 1 , S 2 ...first and second sleeve elements, T ... power supply terminal, l 0 , l 1 ,
l 2 . . . Lengths of the antenna element, first and second sleeve elements, a to g . . . Measurement results.
Claims (1)
て利用される同軸管路Ｃと、 この同軸管路の端部でその内部導体に接続され
たアンテナ素子Ｅと、 前記同軸管路の端部でその外部導体に接続され
この外部導体の外側を絶縁体を介して覆う構造の
スリーブ素子と を備え、 前記スリーブ素子は、前記端部で相互に接続さ
れ前記同軸管路とその中心軸を共通にする２個の
筒体の二重構造であり、 その外側の筒体である第一スリーブ素子Ｓ１の
長さｌ１はその内側の筒体である第二スリーブ素
子Ｓ２の長さｌ２より短く、 その第一スリーブ素子の長さｌ１は第一共振波
長のほぼ４分の１に設定され、その第二スリーブ
素子の長さｌ２は第二共振波長のほぼ４分の１に
設定された 二波長共振形のスリーブアンテナにおいて、 第二スリーブ素子の長さのうち第一スリーブ素
子により覆われていない部分については、その第
二スリーブ素子の筒体の径が第一スリーブ素子の
径とほぼ等しく設定されたことを特徴とする 二波長共振形のスリーブアンテナ。 ２ アンテナ素子Ｅの長さｌ０は、第一スリーブ
素子の長さｌ１以上であり、第一スリーブ素子お
よび第二スリーブ素子の平均長以下である請求項
１記載の二波長共振形のスリーブアンテナ。[Claims for Utility Model Registration] 1. A coaxial conduit C used as a power supply path between the transmitting device or the receiving device, an antenna element E connected to the internal conductor at the end of the coaxial conduit, a sleeve element connected to the outer conductor at an end of the coaxial pipe and covering the outside of the outer conductor via an insulator, the sleeve element being connected to each other at the end and connected to the outer conductor of the coaxial pipe; It has a double structure of two cylindrical bodies that share a path and its central axis, and the length l of the first sleeve element S1 is the outer cylindrical body, and the second sleeve element is the inner cylindrical body. Element S 2 is shorter than the length l 2 , the length l 1 of its first sleeve element is set approximately one quarter of the first resonant wavelength, and the length l 2 of its second sleeve element is set at the second resonant wavelength. In a dual-wavelength resonant sleeve antenna set at approximately one-fourth of the wavelength, the length of the second sleeve element that is not covered by the first sleeve element is covered by the cylindrical body of the second sleeve element. A dual-wavelength resonant sleeve antenna characterized in that the diameter of the sleeve element is set approximately equal to the diameter of the first sleeve element. 2. The dual-wavelength resonant sleeve according to claim 1, wherein the length l0 of the antenna element E is greater than or equal to the length l1 of the first sleeve element and less than or equal to the average length of the first sleeve element and the second sleeve element. antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988151481U JP2504284Y2 (en) | 1988-11-21 | 1988-11-21 | Dual-wavelength resonant sleeve antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988151481U JP2504284Y2 (en) | 1988-11-21 | 1988-11-21 | Dual-wavelength resonant sleeve antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0272013U true JPH0272013U (en) | 1990-06-01 |
| JP2504284Y2 JP2504284Y2 (en) | 1996-07-10 |
Family
ID=31425565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988151481U Expired - Lifetime JP2504284Y2 (en) | 1988-11-21 | 1988-11-21 | Dual-wavelength resonant sleeve antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504284Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61502579A (en) * | 1984-06-25 | 1986-11-06 | アメリカン テレフオン アンド テレグラフ カムパニ− | telescopic antenna |
| JPS6361805U (en) * | 1986-10-13 | 1988-04-23 |
-
1988
- 1988-11-21 JP JP1988151481U patent/JP2504284Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61502579A (en) * | 1984-06-25 | 1986-11-06 | アメリカン テレフオン アンド テレグラフ カムパニ− | telescopic antenna |
| JPS6361805U (en) * | 1986-10-13 | 1988-04-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2504284Y2 (en) | 1996-07-10 |