JPS621473U - - Google Patents
Info
- Publication number
- JPS621473U JPS621473U JP9114585U JP9114585U JPS621473U JP S621473 U JPS621473 U JP S621473U JP 9114585 U JP9114585 U JP 9114585U JP 9114585 U JP9114585 U JP 9114585U JP S621473 U JPS621473 U JP S621473U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- saw filter
- television tuner
- interstage coupling
- coupling 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案テレビジヨンチユーナの一実施
例をＶＩＦ回路と共に示すブロツク図、第２図は
その実施例に使用するＳＡＷフイルタ特性を示す
図、第３図は従来のチユーナを使用したテレビ受
像機の要部を示すブロツク図である。
８……ＩＣ、７……混合回路、１０……ＩＦ増
幅回路、１９……ＳＡＷフイルタ。
Fig. 1 is a block diagram showing an embodiment of the television tuner of the present invention together with a VIF circuit, Fig. 2 is a diagram showing the characteristics of the SAW filter used in the embodiment, and Fig. 3 is a diagram of a TV using a conventional tuner. FIG. 2 is a block diagram showing the main parts of the receiver. 8...IC, 7...mixing circuit, 10...IF amplifier circuit, 19...SAW filter.
Claims (1)
路間を外付けの段間結合回路によつて接続するよ
うにしたＩＣを備えるテレビジヨンチユーナに於
いて、前記段間結合回路をＳＡＷフイルタによつ
て構成し、このＳＡＷフイルタに隣接チヤンネル
信号を充分に減衰せしめる所定のＩＦ特性を持た
せるようにしたことを特徴とするテレビジヨンチ
ユーナ。 In a television tuner equipped with an IC that incorporates a mixing circuit and an IF amplifier circuit, and connects both circuits by an external interstage coupling circuit, the interstage coupling circuit is connected to a SAW filter. A television tuner constructed as above, characterized in that the SAW filter has a predetermined IF characteristic that sufficiently attenuates adjacent channel signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9114585U JPS621473U (en) | 1985-06-17 | 1985-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9114585U JPS621473U (en) | 1985-06-17 | 1985-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS621473U true JPS621473U (en) | 1987-01-07 |
Family
ID=30646785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9114585U Pending JPS621473U (en) | 1985-06-17 | 1985-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS621473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997038525A1 (en) * | 1996-04-04 | 1997-10-16 | Sony Corporation | Television receiver |
-
1985
- 1985-06-17 JP JP9114585U patent/JPS621473U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997038525A1 (en) * | 1996-04-04 | 1997-10-16 | Sony Corporation | Television receiver |
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