JPH037289B2 - - Google Patents
Info
- Publication number
- JPH037289B2 JPH037289B2 JP59080453A JP8045384A JPH037289B2 JP H037289 B2 JPH037289 B2 JP H037289B2 JP 59080453 A JP59080453 A JP 59080453A JP 8045384 A JP8045384 A JP 8045384A JP H037289 B2 JPH037289 B2 JP H037289B2
- Authority
- JP
- Japan
- Prior art keywords
- section
- winding
- bandpass filter
- coil
- capacitor
- 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.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 12
- CXYRUNPLKGGUJF-OZVSTBQFSA-M pamine Chemical compound [Br-].C1([C@@H](CO)C(=O)OC2C[C@@H]3[N+]([C@H](C2)[C@@H]2[C@H]3O2)(C)C)=CC=CC=C1 CXYRUNPLKGGUJF-OZVSTBQFSA-M 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Filters And Equalizers (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は各種電子機器に利用されるコイル部と
コンデンサ部を組み合わせたLCバンドパスフイ
ルターに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an LC bandpass filter that combines a coil section and a capacitor section and is used in various electronic devices.
従来例の構成とその問題点
従来から使用されているLCバンドパスフイル
ターは一般的に第１図のような等価回路で示され
るようにコイル部Ｌとコンデンサ部Ｃを直列に接
続したシリーズスパン部と、コイル部Ｌとコンデ
ンサ部Ｃを並列に接続したパラスパン部をいくつ
か組合せてLCバンドパスフイルターを構成され
ており、第２図に示すように高域帯に減衰極ｆ∞
を具備させる場合、第３図のようにシリーズスパ
ン部にコンデンサ部C′を並列に接続した等価回路
構成となり、コンデンサC′が１個多く必要で、コ
スト的に高価となり、又、形状も大きくなり、所
定の減衰量を具備する安価、小形のLCバンドパ
スフイルターを構成することが困難であつた。Conventional configuration and its problems Conventionally used LC bandpass filters generally have a series span section in which a coil section L and a capacitor section C are connected in series, as shown in the equivalent circuit shown in Figure 1. An LC bandpass filter is constructed by combining several paraspan sections in which the coil section L and capacitor section C are connected in parallel, and as shown in Figure 2, there is an attenuation pole f∞ in the high frequency band.
If the capacitor C' is connected in parallel to the series span part as shown in Fig. 3, an equivalent circuit configuration is required, which requires one more capacitor C', resulting in high cost and a large size. Therefore, it has been difficult to construct an inexpensive, small-sized LC bandpass filter having a predetermined amount of attenuation.
発明の目的
本発明はこのような従来の欠点を除去するもの
で形状を大きくせず、安価で所定の減衰量を得る
ことを目的とするものである。OBJECTS OF THE INVENTION The present invention aims to eliminate such conventional drawbacks, and to obtain a predetermined amount of attenuation at low cost without increasing the size.
発明の構成
この目的を達成するために本発明のLCバンド
パスフイルターは、LCシリーズスパン部におけ
るコイル部の巻方向と逆方向にアース巻線を１タ
ーン以上重ね巻く構成とするものである。このよ
うにアース巻線の巻方向を工夫するだけで形状を
変えることなく、安価で所定の減衰量を具備する
LCバンドパスフイルターを得ることが可能とな
る。Structure of the Invention In order to achieve this object, the LC bandpass filter of the present invention has a structure in which the earth winding is wound over one turn or more in a direction opposite to the winding direction of the coil part in the LC series span part. In this way, it is possible to achieve a specified amount of attenuation at a low cost without changing the shape simply by changing the winding direction of the ground winding.
It becomes possible to obtain an LC bandpass filter.
実施例の説明
以下、本発明の一実施例を２段形のLCバンド
パスフイルターについて第４図〜第６図で説明す
る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 to 6 for a two-stage LC bandpass filter.
第４図は２段形のLCバンドパスフイルターの
一般的な等価回路である。図中L2，C2はシリー
ズスパン部のコイル部及びコンデンサ部である。
L1，C1はパラスパン部のコイル部及びコンデン
サ部である。Ｅはアースラインを示す。第５図は
本発明の２段形のLCバンドパスフイルターの構
成における一例であり、図中１は多連形ボビン、
２はパラスパンのチツプコンデンサ部、３はパラ
スパン部のコイル部、４はシリーズスパンのコイ
ル部、５はアース端子、６はアース巻線を示す。
第５図はシリーズスパン部におけるコイル部４と
逆方向にアース巻線６を２ターン重ね巻いたもの
を示す。 Figure 4 shows a general equivalent circuit of a two-stage LC bandpass filter. In the figure, L 2 and C 2 are the coil section and capacitor section of the series span section.
L 1 and C 1 are the coil section and capacitor section of the paraspan section. E indicates the earth line. FIG. 5 shows an example of the configuration of a two-stage LC bandpass filter of the present invention, in which 1 is a multiple bobbin;
2 is a paraspan chip capacitor section, 3 is a coil section of the paraspan section, 4 is a series span coil section, 5 is a ground terminal, and 6 is a ground winding.
FIG. 5 shows a series span section in which two turns of the earth winding 6 are wound in the opposite direction to the coil section 4.
第６図はこのアース巻線６の巻数を１〜５ター
ンの間で変化させた場合の振幅一周波数特性を示
すものでＡは０ターン、Ｂは１ターン、Ｃは３タ
ーン、Ｄは５ターンの場合を示す。 Figure 6 shows the amplitude-frequency characteristics when the number of turns of the earth winding 6 is varied between 1 and 5 turns, where A is 0 turns, B is 1 turn, C is 3 turns, and D is 5 turns. Indicates the case of a turn.
第６図で明らかなように、シリーズスパン部の
コイル部４と逆方向に重ね巻いたアース巻線６の
巻数を変化させるだけで、減衰極ｆ∞を自由にコ
ントロールすることができ、形状を変えることな
く安価で所定の減衰量を具備したLCバンドパス
フイルターを構成することが可能であり、この産
業的効果は大なるものがあると考える。 As is clear from Fig. 6, the attenuation pole f∞ can be freely controlled by simply changing the number of turns of the earth winding 6, which is overlapped in the opposite direction to the coil part 4 of the series span part, and the shape can be changed. It is possible to construct an inexpensive LC bandpass filter with a predetermined attenuation amount without modification, and we believe that this will have a great industrial effect.
なお、実施例では２段形のLCバンドパスフイ
ルターについて述べたが、２段以上の場合におい
ても検討したが、同様の効果は得られた。又、ア
ース巻線６をシリーズスパン部のコイル部巻方向
と同一巻方向にした場合は全くこの効果が無いこ
とも実験の上、確認できている。 In the examples, a two-stage LC bandpass filter was described, but cases with two or more stages were also investigated, and similar effects were obtained. Furthermore, it has been confirmed through experiments that this effect is completely absent when the ground winding 6 is wound in the same direction as the coil part winding direction of the series span part.
発明の効果
以上のように本発明のLCバンドパスフイルタ
ーは、シリーズスパン部のコイル部上に、このコ
イル部の巻方向と逆方向にアース巻線を１ターン
以上重ね巻くことにより、減衰極を自由にコント
ロールでき、しかも大形化することもなく、コス
ト面でも著しく有利にすることができるなどの利
点をもち、実用的価値の大なるものである。Effects of the Invention As described above, in the LC bandpass filter of the present invention, the attenuation pole can be reduced by winding the earth winding one turn or more over the coil part of the series span part in the opposite direction to the winding direction of this coil part. It has the advantage of being able to be freely controlled, not increasing in size, and being significantly advantageous in terms of cost, and has great practical value.
第１図は一般的なLCバンドパスフイルターの
等価回路図、第２図は高域に減衰極をもつた一般
的なLCバンドパスフイルターの振幅一周波数特
性図、第３図は第２図で示す振幅一周波数特性を
もつ一般的なLCバンドパスフイルターの等価回
路図、第４図は本発明のLCバンドパスフイルタ
ーの一実施例を示す等価回路図、第５図は本発明
の一実施例に示したLCバンドパスフイルターの
構成図、第６図は本発明のシリーズスパン部にお
けるコイル部巻線と逆方向に重ね巻いたアース巻
線を１〜５ターン変化させた場合の振幅一周波数
特性図である。
L1，L2……コイル部、C1，C2……コンデンサ
部、１……多連形ボビン、２……コンデンサ部、
３……コイル部、４……コイル部、５……アース
端子、６……アース巻線。
Figure 1 is an equivalent circuit diagram of a typical LC bandpass filter, Figure 2 is an amplitude-frequency characteristic diagram of a typical LC bandpass filter with an attenuation pole in the high range, and Figure 3 is the equivalent circuit diagram of a typical LC bandpass filter. FIG. 4 is an equivalent circuit diagram of a general LC bandpass filter having the amplitude-frequency characteristics shown in FIG. 4. FIG. 4 is an equivalent circuit diagram showing an embodiment of the LC bandpass filter of the present invention. The configuration diagram of the LC bandpass filter shown in Figure 6 shows the amplitude-frequency characteristics when the earth winding, which is overlapped in the opposite direction to the coil winding in the series span part of the present invention, is changed by 1 to 5 turns. It is a diagram. L 1 , L 2 ... Coil part, C 1 , C 2 ... Capacitor part, 1 ... Multiple bobbin, 2 ... Capacitor part,
3... Coil part, 4... Coil part, 5... Earth terminal, 6... Earth winding.
Claims (1)
リーズスパン部と、コイル部とコンデンサ部を並
列に接続したパラスパン部を少なくとも１箇以上
具備し、上記シリーズスパン部におけるコイル部
の上へ、このコイル部の巻方向の逆方向にアース
巻線を１ターン以上重ね巻いて構成したLCバン
ドパスフイルター。1. At least one series span section in which a coil section and a capacitor section are connected in series, and a paraspan section in which a coil section and a capacitor section are connected in parallel, and the coil section is placed above the coil section in the series span section. An LC bandpass filter constructed by winding the earth winding over one turn or more in the opposite direction of the winding direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8045384A JPS60223314A (en) | 1984-04-20 | 1984-04-20 | Lc band pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8045384A JPS60223314A (en) | 1984-04-20 | 1984-04-20 | Lc band pass filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60223314A JPS60223314A (en) | 1985-11-07 |
| JPH037289B2 true JPH037289B2 (en) | 1991-02-01 |
Family
ID=13718674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8045384A Granted JPS60223314A (en) | 1984-04-20 | 1984-04-20 | Lc band pass filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60223314A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO345072B1 (en) | 2018-03-08 | 2020-09-21 | Kongsberg Defence & Aerospace As | Correction Unit for RF filter |
| WO2020043500A1 (en) * | 2018-08-28 | 2020-03-05 | International Business Machines Corporation | Dispersive-resistive hybrid attenuator for quantum microwave circuits |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440429A (en) * | 1977-09-01 | 1979-03-29 | Caterpillar Tractor Co | Track assemblied body |
| JPS5412341B2 (en) * | 1974-10-30 | 1979-05-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412341U (en) * | 1977-06-28 | 1979-01-26 |
-
1984
- 1984-04-20 JP JP8045384A patent/JPS60223314A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412341B2 (en) * | 1974-10-30 | 1979-05-22 | ||
| JPS5440429A (en) * | 1977-09-01 | 1979-03-29 | Caterpillar Tractor Co | Track assemblied body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60223314A (en) | 1985-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |