JPH0213312U - - Google Patents
Info
- Publication number
- JPH0213312U JPH0213312U JP1988090452U JP9045288U JPH0213312U JP H0213312 U JPH0213312 U JP H0213312U JP 1988090452 U JP1988090452 U JP 1988090452U JP 9045288 U JP9045288 U JP 9045288U JP H0213312 U JPH0213312 U JP H0213312U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- antenna
- antenna device
- trap coil
- signal
- 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 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000615 nonconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Transceivers (AREA)
Description
第１図は本考案の一実施例のアンテナ装置１の
縦断面図、第２図はアンテナ装置１の伸長時の状
態を示す斜視図、第３図はアンテナ装置１の短縮
時の状態を示す斜視図、第４図はアンテナ装置１
がコリニアアレーアンテナ３１として動作すると
きの原理を説明するための図、第５図はコリニア
アレーアンテナ３１の水平指向性を説明するため
の図、第６図はアンテナ装置１がホイツプアンテ
ナ３２として動作するときの原理を説明するため
の図、第７図はアンテナ装置１の受信の受信感度
を示すグラフ、第８図は他の実施例を示す断面図
である。
１……アンテナ装置、２……車体、３……アン
テナエレメント、４……第１導体、５……第１コ
イル、６……第２導体、７……第２コイル、１２
……収納筒、１３……電気絶縁体、１７，２１，
２２……同軸ケーブル、２２……分波器、２５…
…駆動部材、２６……巻取りリール、２７……モ
ータ、３１……コリニアアレーアンテナ、３２…
…ホイツプアンテナ、３３……第１導体部分、３
４……迂回路部分、３５……第２導体部分、４０
……第３導体部分、４５，４６……誘電体層。
FIG. 1 is a longitudinal cross-sectional view of an antenna device 1 according to an embodiment of the present invention, FIG. 2 is a perspective view showing the antenna device 1 when it is extended, and FIG. 3 is a perspective view showing the antenna device 1 when it is shortened. A perspective view, FIG. 4 shows the antenna device 1
5 is a diagram for explaining the horizontal directivity of the collinear array antenna 31, and FIG. 6 is a diagram for explaining the principle when the antenna device 1 operates as a whip antenna 32. FIG. 7 is a graph showing the receiving sensitivity of the antenna device 1, and FIG. 8 is a cross-sectional view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Antenna device, 2... Vehicle body, 3... Antenna element, 4... First conductor, 5... First coil, 6... Second conductor, 7... Second coil, 12
... Storage cylinder, 13 ... Electrical insulator, 17, 21,
22... Coaxial cable, 22... Duplexer, 25...
... Drive member, 26 ... Take-up reel, 27 ... Motor, 31 ... Collinear array antenna, 32 ...
... Whip antenna, 33 ... First conductor portion, 3
4... Detour portion, 35... Second conductor portion, 40
...Third conductor portion, 45, 46...Dielectric layer.
Claims (1)
される自動車用アンテナ装置において、 第２周波数の信号の波長に基づいて定められ、
第２周波数の信号の少なくとも受信が行われる全
長を有するアンテナ本体であつて、 アンテナ本体の給電位置から第１周波数の信号
の波長に基づいて定められる特定長さを隔てた位
置に設けられるトラツプコイルと、 トラツプコイルの半径方向内方側または外方側
の少なくともいずれかの側に設けられる誘電体層
とを備えるアンテナ本体を含み、 トラツプコイルのインダクタンスおよび前記誘
電体層を含むトラツプコイルに関連する構成の有
する容量によつて第１周波数を共振周波数とする
共振回路を構成するようにしたことを特徴とする
自動車用アンテナ装置。[Claims for Utility Model Registration] In an automotive antenna device shared by a first frequency and a second frequency lower than the first frequency, the antenna device is determined based on the wavelength of the signal of the second frequency,
An antenna main body having a total length for at least receiving a second frequency signal, and a trap coil provided at a position separated by a specific length determined based on the wavelength of the first frequency signal from the feeding position of the antenna main body. , an antenna body comprising a dielectric layer provided on at least one of the radially inner and outer sides of the trap coil, and the inductance of the trap coil and the capacitance of the structure related to the trap coil including the dielectric layer. An antenna device for an automobile, comprising a resonant circuit having a first frequency as a resonant frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090452U JPH0213312U (en) | 1988-07-06 | 1988-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090452U JPH0213312U (en) | 1988-07-06 | 1988-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0213312U true JPH0213312U (en) | 1990-01-26 |
Family
ID=31314974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988090452U Pending JPH0213312U (en) | 1988-07-06 | 1988-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0213312U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63119304A (en) * | 1986-11-06 | 1988-05-24 | Fujitsu Ten Ltd | Antenna system for automobile |
-
1988
- 1988-07-06 JP JP1988090452U patent/JPH0213312U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63119304A (en) * | 1986-11-06 | 1988-05-24 | Fujitsu Ten Ltd | Antenna system for automobile |
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