JPH0420718U - - Google Patents
Info
- Publication number
- JPH0420718U JPH0420718U JP6215890U JP6215890U JPH0420718U JP H0420718 U JPH0420718 U JP H0420718U JP 6215890 U JP6215890 U JP 6215890U JP 6215890 U JP6215890 U JP 6215890U JP H0420718 U JPH0420718 U JP H0420718U
- Authority
- JP
- Japan
- Prior art keywords
- approximately
- length
- frequency
- vhf
- coaxial cable
- 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
- 239000004020 conductor Substances 0.000 claims description 9
- 230000005404 monopole Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Details Of Aerials (AREA)
Description
第１図は本考案の一実施例に係わる自動車用小
型アンテナの構成を示す図、第２図は上記自動車
用小型アンテナの等価回路を示す図、第３図は上
記自動車用小型アンテナの周波数に対する電圧定
在波比特性を示す図、第４図は従来の自動車アン
テナの構成を示す図である。
１１……中心導体、１２……モノポールアンテ
ナ、１３……コイル、１４……線状アンテナ素子
、１５……線状導体、１６……アース導体、１７
……車体、１８……同軸ケーブル、１９……プラ
グ。
FIG. 1 is a diagram showing the configuration of a small automobile antenna according to an embodiment of the present invention, FIG. 2 is a diagram showing an equivalent circuit of the above-mentioned small automobile antenna, and FIG. 3 is a diagram showing the frequency of the above-mentioned small automobile antenna. FIG. 4 is a diagram showing voltage standing wave ratio characteristics and a diagram showing the configuration of a conventional automobile antenna. 11... Center conductor, 12... Monopole antenna, 13... Coil, 14... Linear antenna element, 15... Linear conductor, 16... Earth conductor, 17
...Vehicle body, 18...Coaxial cable, 19...Plug.
Claims (1)
高域受信周波数の略０．２５λの長さを有するモ
ノポールアンテナと、このモノポールアンテナの
先端に接続されるＶＨＦ低域受信周波数の略０．
０１λの長さを有するコイルと、上記同軸ケーブ
ルのアース導体に接続されＶＨＦ低域受信周波数
の略０．１λの長さを有すると共に車体に沿つて
絶縁して配設される線状導体とを具備したことを
特徴とする自動車用小型アンテナ。 (2) 同軸ケーブルの中心導体に接続されＶＨＦ
高域受信周波数の略０．２５λの長さを有するモ
ノポールアンテナと、このモノポールアンテナの
先端に一端が接続されＶＨＦ低域受信周波数の略
０．０１λの長さを有するコイルと、このコイル
の他端に接続されＶＨＦ低域受信周波数の略０．
０１２λの長さを有する線状アンテナ素子と、上
記同軸ケーブルのアース導体に接続されＶＨＦ低
域受信周波数の略０．１λの長さを有すると共に
、車体に沿つて絶縁して配設される線状導体とを
具備したことを特徴とする自動車用小型アンテナ
。[Scope of claim for utility model registration] (1) VHF connected to the center conductor of a coaxial cable
A monopole antenna having a length of approximately 0.25λ for high-frequency reception frequencies and approximately 0.25λ for VHF low-frequency reception frequencies connected to the tip of this monopole antenna.
A coil having a length of 0.01λ, and a linear conductor connected to the ground conductor of the coaxial cable and having a length of approximately 0.1λ corresponding to the VHF low-range reception frequency and disposed insulated along the vehicle body. A small antenna for automobiles characterized by the following: (2) VHF connected to the center conductor of the coaxial cable
A monopole antenna having a length of approximately 0.25λ corresponding to a high frequency reception frequency, a coil having one end connected to the tip of the monopole antenna and having a length approximately 0.01λ corresponding to a VHF low frequency reception frequency, and this coil. It is connected to the other end and receives approximately 0.0 of the VHF low frequency reception frequency.
A linear antenna element having a length of 0.12λ, and a wire connected to the ground conductor of the coaxial cable and having a length of approximately 0.1λ of the VHF low frequency reception frequency, and insulated and arranged along the vehicle body. A small antenna for an automobile, characterized by comprising a shaped conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6215890U JPH0420718U (en) | 1990-06-14 | 1990-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6215890U JPH0420718U (en) | 1990-06-14 | 1990-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0420718U true JPH0420718U (en) | 1992-02-21 |
Family
ID=31591055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6215890U Pending JPH0420718U (en) | 1990-06-14 | 1990-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420718U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4124810Y1 (en) * | 1964-10-15 | 1966-12-19 | ||
| JPS61184904A (en) * | 1985-02-13 | 1986-08-18 | Yagi Antenna Co Ltd | Grounding antenna load coil device |
| JPH01181305A (en) * | 1988-01-14 | 1989-07-19 | Yagi Antenna Co Ltd | Monopole antenna |
-
1990
- 1990-06-14 JP JP6215890U patent/JPH0420718U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4124810Y1 (en) * | 1964-10-15 | 1966-12-19 | ||
| JPS61184904A (en) * | 1985-02-13 | 1986-08-18 | Yagi Antenna Co Ltd | Grounding antenna load coil device |
| JPH01181305A (en) * | 1988-01-14 | 1989-07-19 | Yagi Antenna Co Ltd | Monopole antenna |
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