JPH03130602U - - Google Patents
Info
- Publication number
- JPH03130602U JPH03130602U JP3893990U JP3893990U JPH03130602U JP H03130602 U JPH03130602 U JP H03130602U JP 3893990 U JP3893990 U JP 3893990U JP 3893990 U JP3893990 U JP 3893990U JP H03130602 U JPH03130602 U JP H03130602U
- Authority
- JP
- Japan
- Prior art keywords
- trap circuit
- filter
- filter device
- coil
- trap
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は、この考案の一実施例に係るフイルタ
装置のトラツプ回路周りの構造を示す図である。
第２図は、第１図中のＬＣトラツプによつて得ら
れる周波数特性の一例を示す図である。第３図は
、フイルタ装置の一例を示すブロツク図である。
第４図は、従来のフイルタ装置のトラツプ回路周
りの構造を示す図である。第５図は、第４図中の
ケーブルトラツプによつて得られる周波数特性の
一例を示す図である。
１０，１２……フイルタ、１８……トラツプ回
路、１８ｂ……ＬＣトラツプ、１８１……コイル
、１８２……コンデンサ。
FIG. 1 is a diagram showing the structure around the trap circuit of a filter device according to an embodiment of this invention.
FIG. 2 is a diagram showing an example of frequency characteristics obtained by the LC trap in FIG. 1. FIG. 3 is a block diagram showing an example of a filter device.
FIG. 4 is a diagram showing the structure around the trap circuit of a conventional filter device. FIG. 5 is a diagram showing an example of frequency characteristics obtained by the cable trap in FIG. 4. 10, 12... Filter, 18... Trap circuit, 18b... LC trap, 181... Coil, 182... Capacitor.
Claims (1)
方とアース間にトラツプ回路を設けて成るフイル
タ装置において、前記トラツプ回路を、コイルと
コンデンサとを直列接続したもので構成したこと
を特徴とするフイルタ装置。 A filter device comprising a trap circuit provided between at least one of the input side and the output side of the filter and ground, characterized in that the trap circuit is constituted by a coil and a capacitor connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3893990U JPH03130602U (en) | 1990-04-11 | 1990-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3893990U JPH03130602U (en) | 1990-04-11 | 1990-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03130602U true JPH03130602U (en) | 1991-12-27 |
Family
ID=31547394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3893990U Pending JPH03130602U (en) | 1990-04-11 | 1990-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03130602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007300172A (en) * | 2006-04-27 | 2007-11-15 | Japan Radio Co Ltd | Transmission/reception duplexer using bandstop filter |
-
1990
- 1990-04-11 JP JP3893990U patent/JPH03130602U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007300172A (en) * | 2006-04-27 | 2007-11-15 | Japan Radio Co Ltd | Transmission/reception duplexer using bandstop filter |
| JP4668116B2 (en) * | 2006-04-27 | 2011-04-13 | 日本無線株式会社 | A duplexer using a bandstop filter. |