JP2014203976A5 - Printed circuit board and electronic device - Google Patents
Printed circuit board and electronic device Download PDFInfo
- Publication number
- JP2014203976A5 JP2014203976A5 JP2013079104A JP2013079104A JP2014203976A5 JP 2014203976 A5 JP2014203976 A5 JP 2014203976A5 JP 2013079104 A JP2013079104 A JP 2013079104A JP 2013079104 A JP2013079104 A JP 2013079104A JP 2014203976 A5 JP2014203976 A5 JP 2014203976A5
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- digital signal
- wiring pattern
- signal
- 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
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims 3
- 239000003990 capacitor Substances 0.000 claims 1
Description
本発明は、電気・電子機器等に搭載され、デジタル信号を伝送する伝送線路を有するプリント配線板を備えたプリント回路板、及び電子機器に関する。 The present invention relates to a printed circuit board including a printed wiring board mounted on an electrical / electronic device or the like and having a transmission line for transmitting a digital signal , and the electronic device .
そこで、本発明は、ローパスフィルタの遮断周波数よりも高い周波数帯で大きな減衰量が得られるプリント回路板及び電子機器を提供する。 Therefore, the present invention provides a printed circuit board and an electronic device that can obtain a large attenuation in a frequency band higher than the cutoff frequency of the low-pass filter.
Claims (6)
前記プリント配線板に実装され、前記伝送線路に前記デジタル信号を送信する送信回路と、
前記伝送線路に配置され、コンデンサ素子及びインダクタ素子を有して構成された、前記デジタル信号の基本周波数に対するローパスフィルタと、を備え、
前記伝送線路は、
前記ローパスフィルタの信号入力端又は信号出力端に接続された信号配線パターンと、
一端が前記信号配線パターンに接続された接続端であり、他端が開放された開放端であるオープンスタブ配線パターンと、を有し、
前記オープンスタブ配線パターンの接続端から開放端までの配線の電気長が、前記デジタル信号の基本周波数に対応する波長の1/4以上であることを特徴とするプリント回路板。 A printed wiring board having a transmission line through which a digital signal is transmitted;
A transmission circuit mounted on the printed wiring board and transmitting the digital signal to the transmission line;
A low-pass filter for the fundamental frequency of the digital signal, which is arranged on the transmission line and configured to include a capacitor element and an inductor element;
The transmission line is
A signal wiring pattern connected to the signal input end or signal output end of the low-pass filter; and
One end is a connection end connected to the signal wiring pattern, and the other end has an open stub wiring pattern that is an open end, and
The printed circuit board, wherein an electrical length of a wiring from a connection end to an open end of the open stub wiring pattern is ¼ or more of a wavelength corresponding to a fundamental frequency of the digital signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013079104A JP6362057B2 (en) | 2013-04-05 | 2013-04-05 | Printed circuit board and electronic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013079104A JP6362057B2 (en) | 2013-04-05 | 2013-04-05 | Printed circuit board and electronic device |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2014203976A JP2014203976A (en) | 2014-10-27 |
JP2014203976A5 true JP2014203976A5 (en) | 2016-05-26 |
JP6362057B2 JP6362057B2 (en) | 2018-07-25 |
Family
ID=52354149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013079104A Active JP6362057B2 (en) | 2013-04-05 | 2013-04-05 | Printed circuit board and electronic device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP6362057B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160182001A1 (en) * | 2014-12-19 | 2016-06-23 | Hitachi, Ltd | Common mode noise filter |
JP2018074432A (en) * | 2016-10-31 | 2018-05-10 | 株式会社オートネットワーク技術研究所 | Communication apparatus |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2671571B2 (en) * | 1990-07-03 | 1997-10-29 | 松下電器産業株式会社 | Microwave filter |
JP2577770Y2 (en) * | 1993-05-14 | 1998-07-30 | 東光株式会社 | Balanced low-pass filter |
JPH11284411A (en) * | 1998-03-27 | 1999-10-15 | Mitsubishi Electric Corp | Frequency characteristic correction device |
JP2000101303A (en) * | 1998-09-25 | 2000-04-07 | Mitsubishi Electric Corp | Band stop filter |
JP2002299959A (en) * | 2001-03-30 | 2002-10-11 | New Japan Radio Co Ltd | Gunn diode oscillator |
JP2003309401A (en) * | 2002-04-17 | 2003-10-31 | Mitsubishi Electric Corp | Filter circuit and frequency multiplier circuit using the filter circuit |
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2013
- 2013-04-05 JP JP2013079104A patent/JP6362057B2/en active Active
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