JPH0477297U - - Google Patents
Info
- Publication number
- JPH0477297U JPH0477297U JP12150290U JP12150290U JPH0477297U JP H0477297 U JPH0477297 U JP H0477297U JP 12150290 U JP12150290 U JP 12150290U JP 12150290 U JP12150290 U JP 12150290U JP H0477297 U JPH0477297 U JP H0477297U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- frequency filter
- filter unit
- wiring board
- signal terminal
- 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
- 239000002184 metal Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Structure Of Receivers (AREA)
Description
第１図及び第２図は本考案の一実施例の斜視図
及び分解斜視図、第３図及び第４図は本実施例を
受信機に実装した状態を示す斜視図及び側面図、
第５図及び第６図は従来の第１中間周波フイルタ
ユニツトの一例を示す斜視図及び分解斜視図、第
７図及び第８図は従来のフイルタユニツトを受信
機に実装した時の斜視図及び側面図、第９図はダ
ブルスーパーヘテロダイン方式受信機の一般的な
ブロツク図、第１０図は第１中間周波フイルタの
減衰量特性を表わすグラフである。
１，６，５１……金属シールドケース、２，５
２……入力信号端子、３，５３……出力信号端子
、４，５４……プリント配線基板、５，５５……
フイルタ素子及び電気部品、７……突起、８……
受信機のプリント配線基板、９……シールド金具
、１０……アンテナ、１１……高周波フイルタ、
１２……第１周波数ミキサ、１３……第１局部発
振器、１４……第１中間周波フイルタ、１５……
第２周波数ミキサ、１６……第２局部発振器、１
７……第２中間周波フイルタ、１８……第２中間
周波アンプ、１９……デイスクリミネータ、２０
……低周波アンプ、２１……スピーカ、１００…
…本考案の第１中間周波フイルタユニツト、５０
０……従来の第１中間周波フイルタユニツト。
1 and 2 are a perspective view and an exploded perspective view of an embodiment of the present invention, and FIGS. 3 and 4 are a perspective view and a side view of the embodiment installed in a receiver,
5 and 6 are a perspective view and an exploded perspective view showing an example of a conventional first intermediate frequency filter unit, and FIGS. 7 and 8 are a perspective view and an exploded perspective view of a conventional filter unit mounted on a receiver. A side view, FIG. 9 is a general block diagram of a double superheterodyne receiver, and FIG. 10 is a graph showing the attenuation characteristics of the first intermediate frequency filter. 1, 6, 51...Metal shield case, 2, 5
2...Input signal terminal, 3,53...Output signal terminal, 4,54...Printed wiring board, 5,55...
Filter element and electrical component, 7... protrusion, 8...
Receiver printed wiring board, 9... Shield metal fittings, 10... Antenna, 11... High frequency filter,
12...First frequency mixer, 13...First local oscillator, 14...First intermediate frequency filter, 15...
Second frequency mixer, 16...Second local oscillator, 1
7... Second intermediate frequency filter, 18... Second intermediate frequency amplifier, 19... Discriminator, 20
...Low frequency amplifier, 21...Speaker, 100...
...first intermediate frequency filter unit of the present invention, 50
0...Conventional first intermediate frequency filter unit.
Claims (1)
に実装し、直方体をなす金属シールドケースで覆
つたダブルスーパーヘテロダイン方式受信機の第
１中間周波フイルタユニツトの構造において、前
記プリント配線基板からの入力信号端子と出力信
号端子を前記金属シールドケースの相対する二面
からそれぞれ外方に延出するように設けたことを
特徴とする第１中間周波フイルタユニツトの構造
。 ２ 前記金属シールドケースの少なくとも一面に
半田付可能な突起を設けたことを特徴とする請求
項１記載の第１中間周波フイルタユニツトの構造
。[Claims for Utility Model Registration] 1. In the structure of a first intermediate frequency filter unit of a double superheterodyne receiver in which a filter element and electrical components are mounted on a printed wiring board and covered with a rectangular parallelepiped metal shielding case, A structure of a first intermediate frequency filter unit, characterized in that an input signal terminal and an output signal terminal from a wiring board are provided so as to extend outward from two opposing surfaces of the metal shield case, respectively. 2. The structure of the first intermediate frequency filter unit according to claim 1, wherein a solderable projection is provided on at least one surface of the metal shield case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990121502U JP2573331Y2 (en) | 1990-11-20 | 1990-11-20 | Filter unit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990121502U JP2573331Y2 (en) | 1990-11-20 | 1990-11-20 | Filter unit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0477297U true JPH0477297U (en) | 1992-07-06 |
| JP2573331Y2 JP2573331Y2 (en) | 1998-05-28 |
Family
ID=31869355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990121502U Expired - Lifetime JP2573331Y2 (en) | 1990-11-20 | 1990-11-20 | Filter unit structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573331Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840954U (en) * | 1981-09-14 | 1983-03-17 | エスエムケイ株式会社 | antenna signal supply device |
| JPS62142423A (en) * | 1985-12-17 | 1987-06-25 | Matsushita Electric Ind Co Ltd | Filter deice |
-
1990
- 1990-11-20 JP JP1990121502U patent/JP2573331Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840954U (en) * | 1981-09-14 | 1983-03-17 | エスエムケイ株式会社 | antenna signal supply device |
| JPS62142423A (en) * | 1985-12-17 | 1987-06-25 | Matsushita Electric Ind Co Ltd | Filter deice |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2573331Y2 (en) | 1998-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |