JPH02844U - - Google Patents
Info
- Publication number
- JPH02844U JPH02844U JP7719088U JP7719088U JPH02844U JP H02844 U JPH02844 U JP H02844U JP 7719088 U JP7719088 U JP 7719088U JP 7719088 U JP7719088 U JP 7719088U JP H02844 U JPH02844 U JP H02844U
- Authority
- JP
- Japan
- Prior art keywords
- diagram
- circuit
- antenna
- parallel
- tuner
- 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
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 239000005357 flat glass Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Details Of Aerials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案を適用した自動車の後方窓ガラ
スアンテナの配線図、第２図は本考案の一実施例
を示すマツチング回路の回路図、第３図は第２図
と比較する単一並列共振回路の回路図、第４図は
第３図の並列共振回路を用いた場合の受信感度―
周波数特性図、第５図は実施例に用いたコイルの
インダクタンス―周波数特性図、第６図は第２図
のマツチング回路を用いた場合の受信感度―周波
数特性図、第７図はフイーダケーブルの後にマツ
チング回路を挿入したときの配線図、第８図は第
２図と異なる実施例を示すマツチング回路の回路
図、第９図は従来の窓ガラスアンテナの配線図、
第１０図は第９図の等価回路図である。
なお図面に用いた符号において、１…後方窓ガ
ラス、２…ヒータ線、７…フイーダケーブル、１
９…チユーナ、２０…マツチング回路、２１…第
１の並列共振回路、２２…第２の並列共振回路、
２３…ローパスフイルタ、Ｌ３…共振用コイル、
Ｃｆ…無効容量、である。
Figure 1 is a wiring diagram of an automobile rear window glass antenna to which the present invention is applied, Figure 2 is a circuit diagram of a matching circuit showing an embodiment of the present invention, and Figure 3 is a single parallel diagram for comparison with Figure 2. The circuit diagram of the resonant circuit, Figure 4 shows the receiving sensitivity when using the parallel resonant circuit of Figure 3.
Frequency characteristic diagram, Figure 5 is the inductance-frequency characteristic diagram of the coil used in the example, Figure 6 is the reception sensitivity-frequency characteristic diagram when the matching circuit of Figure 2 is used, and Figure 7 is the feeder cable. Fig. 8 is a circuit diagram of a matching circuit showing a different embodiment from Fig. 2, Fig. 9 is a wiring diagram of a conventional window glass antenna,
FIG. 10 is an equivalent circuit diagram of FIG. 9. In addition, in the symbols used in the drawings, 1...rear window glass, 2...heater wire, 7...feeder cable, 1
9... tuner, 20... matching circuit, 21... first parallel resonant circuit, 22... second parallel resonant circuit,
23...Low pass filter, L3 ...Resonance coil,
Cf ...Ineffective capacity.
Claims (1)
アンテナの対地浮遊容量分と並列に、インダクタ
ンスが受信周波数の増加に伴つて減少する共振コ
イルを設けた自動車用受信装置。 An automotive receiver is provided with a resonant coil whose inductance decreases as the receiving frequency increases, in parallel with the ground stray capacitance of the antenna when looking at the antenna side from the input end of the tuner.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988077190U JPH057789Y2 (en) | 1988-06-10 | 1988-06-10 | |
| DE89305733T DE68909498T2 (en) | 1988-06-10 | 1989-06-07 | Receiving system. |
| EP89305733A EP0346089B1 (en) | 1988-06-10 | 1989-06-07 | Reception system |
| ES89305733T ES2044118T3 (en) | 1988-06-10 | 1989-06-07 | RECEPTION SYSTEM. |
| KR1019890007956A KR900001119A (en) | 1988-06-10 | 1989-06-09 | Automotive Receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988077190U JPH057789Y2 (en) | 1988-06-10 | 1988-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02844U true JPH02844U (en) | 1990-01-05 |
| JPH057789Y2 JPH057789Y2 (en) | 1993-02-26 |
Family
ID=31302185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988077190U Expired - Lifetime JPH057789Y2 (en) | 1988-06-10 | 1988-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH057789Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63146521A (en) * | 1986-12-09 | 1988-06-18 | Harada Kogyo Kk | Antenna system for automobile |
-
1988
- 1988-06-10 JP JP1988077190U patent/JPH057789Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63146521A (en) * | 1986-12-09 | 1988-06-18 | Harada Kogyo Kk | Antenna system for automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH057789Y2 (en) | 1993-02-26 |
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