JPS5813751U - tuner antenna filter - Google Patents
tuner antenna filterInfo
- Publication number
- JPS5813751U JPS5813751U JP10541481U JP10541481U JPS5813751U JP S5813751 U JPS5813751 U JP S5813751U JP 10541481 U JP10541481 U JP 10541481U JP 10541481 U JP10541481 U JP 10541481U JP S5813751 U JPS5813751 U JP S5813751U
- Authority
- JP
- Japan
- Prior art keywords
- band
- filter
- tuner
- antenna
- circuit
- 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
Landscapes
- Noise Elimination (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は米国向はチューナ内の入力フィルタの周波数特
性図、第２図は本考案の一実施例のアンテナフィルタの
回路図、第３図ａは第２図のフィルタ回路１の周波数特
性図、ｂは同フィルタ回路２の周波数特性図、第４図は
本実施例のアンテナフィルタの取付構造の説明図である
。
１Φψ曲（ローバンド−バンドパス）フィルタ回路、２
・・曲（ハイバンド−バンドパス）フィルタ回路、３・
・・・・・入力端子、４・・・・・・出力端子、５・・
・・・・バンド切換端子、６・・・・・・トラッキング
・トラップ・フィルタ、７・・・・・・制御端子、８・
・・・・・シールドケース、９・・・・・・アンテナ端
子板、１０・・・・・・チューナ。Figure 1 is a frequency characteristic diagram of the input filter in the tuner for the United States, Figure 2 is a circuit diagram of an antenna filter according to an embodiment of the present invention, and Figure 3a is a frequency characteristic diagram of filter circuit 1 in Figure 2. , b are frequency characteristic diagrams of the filter circuit 2, and FIG. 4 is an explanatory diagram of the mounting structure of the antenna filter of this embodiment. 1 Φψ (low band-band pass) filter circuit, 2
... Song (high band-band pass) filter circuit, 3.
...Input terminal, 4...Output terminal, 5...
... Band switching terminal, 6 ... Tracking trap filter, 7 ... Control terminal, 8.
...shield case, 9 ... antenna terminal board, 10 ... tuner.
Claims (5)
特性を有する第１のフィルタ回路と、該チューナの局部
発振周波数に同調するトラッキング・トラップ方式の第
２のフィルタ回路とが設けられて成ることを特徴とする
チューナのアンテナフィルタ。(1) A first filter circuit having almost the same bandpass characteristics as the tuner's input filter, and a tracking trap type second filter circuit tuned to the local oscillation frequency of the tuner. Features a tuner antenna filter.
パス拳フイルりとハイバンド・バンドパス・フィルタの
並列回路で成り、上記チューナのバンド切換信号によっ
ていずれか一方が選択されることを特徴とする実用新案
登録請求の範囲第１項記載のチューナのアンテナフィル
タ。(2) The first filter circuit is comprised of a parallel circuit of a low band band pass filter and a high band band pass filter, one of which is selected by a band switching signal of the tuner. An antenna filter for a tuner according to claim 1 of the utility model registration claim.
ダイオードの直列共振回路で成り、該バラ゛ フタ・
ダイオードに上記チューナのチューニング電圧が印加さ
れるようにしたことを特徴とする実用新案登録請求の範
囲第１項記載のチューナのアンテナフィルタ。(3) The second filter circuit includes a coil and a varactor.
It consists of a series resonant circuit of diodes, and the
An antenna filter for a tuner according to claim 1, wherein a tuning voltage of the tuner is applied to a diode.
域が上記チューナの映像中間周波数より狭く、且つ上記
ハイバンド・バンドパス・フィルタの帯域が、該映像中
間周波数より広いことを特徴とする実用新案登録請求の
範囲第２項記載のチューナのアンテナフィルタ。(4) A request for registration of a utility model characterized in that the band of the low-band band-pass filter is narrower than the video intermediate frequency of the tuner, and the band of the high-band band-pass filter is wider than the video intermediate frequency. An antenna filter for a tuner according to item 2.
・バンドパス・フィルタの帯域内でみのトラッキングが
可能なことを特徴とする実用新案登録請求の範囲第４項
記載のチューナのアンテナフィルタ。(5) The antenna filter for a tuner according to claim 4, wherein the second filter circuit is capable of tracking only within the band of the high band bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10541481U JPS5813751U (en) | 1981-07-17 | 1981-07-17 | tuner antenna filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10541481U JPS5813751U (en) | 1981-07-17 | 1981-07-17 | tuner antenna filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5813751U true JPS5813751U (en) | 1983-01-28 |
| JPS6316187Y2 JPS6316187Y2 (en) | 1988-05-09 |
Family
ID=29899951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10541481U Granted JPS5813751U (en) | 1981-07-17 | 1981-07-17 | tuner antenna filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813751U (en) |
-
1981
- 1981-07-17 JP JP10541481U patent/JPS5813751U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6316187Y2 (en) | 1988-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5813751U (en) | tuner antenna filter | |
| JPS5959047U (en) | UHF-VHF combination tuner | |
| JPS58141637U (en) | RF switch circuit | |
| JPS6017071U (en) | RF modulator | |
| JPS6025250U (en) | VHF tuner input circuit | |
| JPS59122133A (en) | Multi-band electronic switching type am receiver | |
| JPH0139002Y2 (en) | ||
| JPS5816944U (en) | VHF electronic tuner | |
| JPS60111122U (en) | Band switching circuit | |
| JPS5920744U (en) | Receiver input circuit | |
| JPH0633738Y2 (en) | Television receiver | |
| JPH066633Y2 (en) | Electronic tuning tuner | |
| JPS591246U (en) | UHF electronic tuning tuner | |
| JPS60111143U (en) | receiving device | |
| JPS59166532U (en) | selective tuning circuit | |
| JPS6137638U (en) | VHF tuner input circuit | |
| JPS59180542U (en) | RF input circuit of VHF electronic tuning tuner | |
| JPS5959032U (en) | tuned circuit | |
| JPS58114626U (en) | electronic tuning tuner | |
| JPS59149774U (en) | RF modulator | |
| JPS59166523U (en) | Radio receiver band switching device | |
| JPS58111541U (en) | Receiver antenna circuit | |
| JPH02214336A (en) | Uhf/vhf separator circuit | |
| JPS58125441U (en) | antenna input circuit | |
| JPS60119156U (en) | VHF tuner |