JPH0332872U - - Google Patents
Info
- Publication number
- JPH0332872U JPH0332872U JP1989091163U JP9116389U JPH0332872U JP H0332872 U JPH0332872 U JP H0332872U JP 1989091163 U JP1989091163 U JP 1989091163U JP 9116389 U JP9116389 U JP 9116389U JP H0332872 U JPH0332872 U JP H0332872U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- frequency signal
- signal
- saw filter
- video
- 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 3
- 238000000926 separation method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
第１図の特性を示す図である。第３図は高価な従
来例を示す図である。第４図は安価な従来例を示
す図、第５図は第４図の特性を示す図である。
１２……プリアンプ、１４……ＶＩＦ用のＳＡ
Ｗフイルタ（第１ＳＡＷフイルタ）、１６……Ｖ
ＩＦアンプ（映像中間周波数信号処理回路）、２
０……ＳＩＦ用のＳＡＷフイルタ（第２ＳＡＷフ
イルタ）、２２……ＳＩＦアンプ（音声中間周波
数信号処理回路）、ｌ１，ｌ２……信号路、Ｌ１
……コイル（第１インダクタンス素子）、Ｌ２…
…コイル（第２インダクタンス素子）、Ｃ……コ
ンデンサ（コンデンサ素子）、２６……ローパス
フイルタ。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing the characteristics of FIG. 1. FIG. 3 is a diagram showing an expensive conventional example. FIG. 4 is a diagram showing an inexpensive conventional example, and FIG. 5 is a diagram showing the characteristics of FIG. 4. 12...Preamplifier, 14...SA for VIF
W filter (1st SAW filter), 16...V
IF amplifier (video intermediate frequency signal processing circuit), 2
0...SIF SAW filter (second SAW filter), 22...SIF amplifier (audio intermediate frequency signal processing circuit), l1 , l2 ...signal path, L1
... Coil (first inductance element), L 2 ...
...Coil (second inductance element), C...Capacitor (capacitor element), 26...Low pass filter.
Claims (1)
像中間周波数信号用の第１ＳＡＷフイルタ１４と
、 この第１ＳＡＷフイルタからの信号が入力され
る映像中間周波数信号処理回路１６と、 前記プリアンプ１２からの信号が入力され、前
記映像中間周波数信号の周波数より低い周波数の
音声中間周波数信号用の第２ＳＡＷフイルタ２０
と、 この第２ＳＡＷフイルタからの信号が入力され
る音声中間周波数信号処理回路２２と、 前記プリアンプ１２と前記第２ＳＡＷフイルタ
２０および前記第２ＳＡＷフイルタ２０と前記音
声中間周波数信号処理回路２２との間の信号路ｌ
１，ｌ２に直列に接続されたインピーダンスマツ
チング用の第１、第２イングクタンス素子Ｌ１，
Ｌ２と、 を備える映像・音声中間周波数信号分離回路に
於いて、 前記音声中間周波数信号処理回路２２と前記第
２インダクタンス素子Ｌ２との間に一端が接続さ
れ、他端が接地されることにより、前記第２イン
ダクタンス素子Ｌ２と共にローパスフイルタを形
成して前記映像中間周波数信号の周波数の信号を
カツトするコンデンサ素子Ｃを、 備えることを特徴とする映像・音声中間周波数
信号分離回路。[Claims for Utility Model Registration] A preamplifier 12 that amplifies an intermediate frequency signal, a first SAW filter 14 for a video intermediate frequency signal to which the signal from the preamplifier 12 is input, and a first SAW filter 14 to which the signal from the first SAW filter is input. a second SAW filter 20 for an audio intermediate frequency signal having a frequency lower than the frequency of the video intermediate frequency signal, into which the signal from the preamplifier 12 is input;
and an audio intermediate frequency signal processing circuit 22 into which the signal from the second SAW filter is input, and between the preamplifier 12 and the second SAW filter 20 and between the second SAW filter 20 and the audio intermediate frequency signal processing circuit 22. signal path l
1 and l 2 are connected in series to the first and second inductance elements L 1 , for impedance matching;
In the video/audio intermediate frequency signal separation circuit comprising L2 , one end is connected between the audio intermediate frequency signal processing circuit 22 and the second inductance element L2 , and the other end is grounded. A video/audio intermediate frequency signal separation circuit comprising: a capacitor element C that forms a low-pass filter together with the second inductance element L2 to cut out a signal at the frequency of the video intermediate frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989091163U JPH071894Y2 (en) | 1989-08-01 | 1989-08-01 | Video / audio intermediate frequency signal separation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989091163U JPH071894Y2 (en) | 1989-08-01 | 1989-08-01 | Video / audio intermediate frequency signal separation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332872U true JPH0332872U (en) | 1991-03-29 |
| JPH071894Y2 JPH071894Y2 (en) | 1995-01-18 |
Family
ID=31640660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989091163U Expired - Lifetime JPH071894Y2 (en) | 1989-08-01 | 1989-08-01 | Video / audio intermediate frequency signal separation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071894Y2 (en) |
-
1989
- 1989-08-01 JP JP1989091163U patent/JPH071894Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071894Y2 (en) | 1995-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0332872U (en) | ||
| JPH05136650A (en) | Printed wiring board for mounting saw filter | |
| JPH046278Y2 (en) | ||
| JPS6428017U (en) | ||
| JPS63114573U (en) | ||
| JPS58115981A (en) | Television receiver | |
| JPS622853Y2 (en) | ||
| JPH0221892U (en) | ||
| JPH0398514U (en) | ||
| JPS58194598U (en) | hearing aid | |
| JPH0320447U (en) | ||
| JPS6258974U (en) | ||
| JPH0390117U (en) | ||
| JPS5915982U (en) | Preamplifier for vehicle mounted Loran C receiver | |
| JPS58178727U (en) | trap circuit | |
| JPS5866719U (en) | Video intermediate frequency amplification circuit | |
| JPH0312595U (en) | ||
| JPS6052738U (en) | FM receiver | |
| JPS5816927U (en) | Intermediate frequency filter circuit for television receivers | |
| JPH0344924U (en) | ||
| JPH01162404A (en) | Device for amplifying specified frequency | |
| JPS5963545U (en) | antenna input circuit | |
| JPS60150835U (en) | External noise removal structure to front end | |
| JPH0243099U (en) | ||
| JPS6168521U (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |