JPS63111011U - - Google Patents
Info
- Publication number
- JPS63111011U JPS63111011U JP212787U JP212787U JPS63111011U JP S63111011 U JPS63111011 U JP S63111011U JP 212787 U JP212787 U JP 212787U JP 212787 U JP212787 U JP 212787U JP S63111011 U JPS63111011 U JP S63111011U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- low
- filter
- crystal filter
- pass filter
- 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
- 239000013078 crystal Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
第１図及び第２図は本考案の一実施例による構
成を示す図、第３図は本考案の一実施例を模式的
に示したもので、ａはシールド４の上部を切断し
た状態の平面図を、ｂはシールド４の側面を切断
した状態の正面図を示す。第４図は水晶フイルタ
と、その付属素子を取り除いた従来の検波回路を
示す。
図において、１は増幅器、２は検波回路、３は
水晶フイルタ、３Ａは入力端子、３Ｂは出力端子
、３Ｃは接地端子、４はシールド部材、１５は低
域ろ波器をそれぞれ示す。
1 and 2 are diagrams showing a configuration according to an embodiment of the present invention, and FIG. 3 is a diagram schematically showing an embodiment of the present invention. A plan view is shown, and b shows a front view with the side surface of the shield 4 cut away. FIG. 4 shows a conventional detection circuit with the crystal filter and its attached elements removed. In the figure, 1 is an amplifier, 2 is a detection circuit, 3 is a crystal filter, 3A is an input terminal, 3B is an output terminal, 3C is a ground terminal, 4 is a shield member, and 15 is a low-pass filter.
Claims (1)
Ａと出力端子３Ｂとを備え、シールドケースに収
容された水晶フイルタ３と；該水晶フイルタの出
力端子に接続された広帯域検波回路２と；該検波
回路の出力を入力とする低域ろ波器１５と；該水
晶フイルタの接地端子と該低域ろ波器の接地端子
とを接続し、かつ、該水晶フイルタの出力端子、
該検波回路及び該低域ろ波器を覆うように備えら
れたシールド部材４とから成る狭帯域検波器。 Input terminals 3 on both sides sandwiching the ground terminal 3C in the center
A crystal filter 3, which is housed in a shield case and includes an output terminal 3B; a broadband detection circuit 2 connected to the output terminal of the crystal filter; and a low-pass filter that receives the output of the detection circuit as an input. 15; connecting the ground terminal of the crystal filter and the ground terminal of the low-pass filter, and an output terminal of the crystal filter;
A narrowband detector comprising a shield member 4 provided to cover the detection circuit and the low-pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP212787U JPS63111011U (en) | 1987-01-09 | 1987-01-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP212787U JPS63111011U (en) | 1987-01-09 | 1987-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63111011U true JPS63111011U (en) | 1988-07-16 |
Family
ID=30780674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP212787U Pending JPS63111011U (en) | 1987-01-09 | 1987-01-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63111011U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946048B2 (en) * | 1977-04-22 | 1984-11-10 | 株式会社日立製作所 | magnetic recording and reproducing device |
-
1987
- 1987-01-09 JP JP212787U patent/JPS63111011U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946048B2 (en) * | 1977-04-22 | 1984-11-10 | 株式会社日立製作所 | magnetic recording and reproducing device |
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