JPS623122U - - Google Patents
Info
- Publication number
- JPS623122U JPS623122U JP9486985U JP9486985U JPS623122U JP S623122 U JPS623122 U JP S623122U JP 9486985 U JP9486985 U JP 9486985U JP 9486985 U JP9486985 U JP 9486985U JP S623122 U JPS623122 U JP S623122U
- Authority
- JP
- Japan
- Prior art keywords
- stage
- circuit
- variable capacitance
- capacitor
- capacitance diode
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Structure Of Receivers (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は本考案の一実施例である複同調回路を
示す図、第２図はその通過帯域特性図である。第
３図は従来例である複同調回路を示す図、第４図
はその通過帯域特性図である。第５図は他の従来
例である複同調回路を示す図、第６図はその通過
帯域特性図である。
１１……複同調回路、１２，１３……同調回路
、１４……共振線路、１５……可変容量ダイオー
ド、１６……同調補正用コンデンサ、１７……シ
ールド仕切板、１８……窓、１９……結合用コイ
ル、２０……結合用コンデンサ。
FIG. 1 is a diagram showing a double-tuned circuit which is an embodiment of the present invention, and FIG. 2 is a diagram showing its pass band characteristics. FIG. 3 is a diagram showing a conventional double-tuned circuit, and FIG. 4 is a passband characteristic diagram thereof. FIG. 5 is a diagram showing another conventional double-tuned circuit, and FIG. 6 is a passband characteristic diagram thereof. 11... double tuning circuit, 12, 13... tuning circuit, 14... resonant line, 15... variable capacitance diode, 16... tuning correction capacitor, 17... shield partition plate, 18... window, 19... ... Coupling coil, 20... Coupling capacitor.
Claims (1)
デンサを直列接続同調回路を、ＲＦ段と混合段の
各シールド区画室にシールド仕切板の窓を介在し
て対設させて、ＲＦ段と混合段を結合した複同調
回路において、各同調回路の可変容量ダイオード
と補正用コンデンサの接続点間に、コイル及びコ
ンデンサの並列回路から成る結合手段を接続した
ことを特徴とするＵＨＦチユーナ。 The resonance line, variable capacitance diode, and correction capacitor are connected in series. A tuning circuit is installed in each shield compartment of the RF stage and the mixing stage, with a window of the shield partition plate interposed between them, and the RF stage and the mixing stage are combined. A UHF tuner characterized in that, in the double-tuned circuit, a coupling means consisting of a parallel circuit of a coil and a capacitor is connected between the connection point of the variable capacitance diode of each tuned circuit and the correction capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094869U JPH0221798Y2 (en) | 1985-06-21 | 1985-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985094869U JPH0221798Y2 (en) | 1985-06-21 | 1985-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS623122U true JPS623122U (en) | 1987-01-09 |
| JPH0221798Y2 JPH0221798Y2 (en) | 1990-06-12 |
Family
ID=30653693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985094869U Expired JPH0221798Y2 (en) | 1985-06-21 | 1985-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221798Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5097201A (en) * | 1973-12-25 | 1975-08-02 | ||
| JPS5299748A (en) * | 1976-02-18 | 1977-08-22 | Toshiba Corp | Resonance circuit of tuner |
| JPS57158225U (en) * | 1981-03-30 | 1982-10-05 |
-
1985
- 1985-06-21 JP JP1985094869U patent/JPH0221798Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5097201A (en) * | 1973-12-25 | 1975-08-02 | ||
| JPS5299748A (en) * | 1976-02-18 | 1977-08-22 | Toshiba Corp | Resonance circuit of tuner |
| JPS57158225U (en) * | 1981-03-30 | 1982-10-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0221798Y2 (en) | 1990-06-12 |
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