JP2014203976A5 - Printed circuit board and electronic device - Google Patents

Printed circuit board and electronic device Download PDF

Info

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
Application number
JP2013079104A
Other languages
Japanese (ja)
Other versions
JP6362057B2 (en
JP2014203976A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2013079104A priority Critical patent/JP6362057B2/en
Priority claimed from JP2013079104A external-priority patent/JP6362057B2/en
Publication of JP2014203976A publication Critical patent/JP2014203976A/en
Publication of JP2014203976A5 publication Critical patent/JP2014203976A5/en
Application granted granted Critical
Publication of JP6362057B2 publication Critical patent/JP6362057B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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)

デジタル信号が伝送される伝送線路を有するプリント配線板と、
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. 前記信号配線パターンにおける、前記ローパスフィルタと、前記オープンスタブ配線パターンが接続される接続点との間の配線の電気長が、前記デジタル信号の基本周波数に対応する波長の０．０４５以上かつ０．０７５以下であることを特徴とする請求項１に記載のプリント回路板。   In the signal wiring pattern, the electrical length of the wiring between the low-pass filter and the connection point to which the open stub wiring pattern is connected is 0.045 or more of the wavelength corresponding to the fundamental frequency of the digital signal and 0. The printed circuit board according to claim 1, wherein the printed circuit board is 075 or less. 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３／４以上５／４以下であることを特徴とする請求項１又は２に記載のプリント回路板。   The electrical length of the wiring from the connection end to the open end of the open stub wiring pattern is 3/4 or more and 5/4 or less of the wavelength corresponding to the fundamental frequency of the digital signal. A printed circuit board according to 1. 前記ローパスフィルタが、π型又はＴ型であることを特徴とする請求項１乃至３のいずれか１項に記載のプリント回路板。   The printed circuit board according to claim 1, wherein the low-pass filter is a π-type or a T-type. 前記送信回路が、前記デジタル信号として一対の差動信号を送信する差動回路であり、前記差動回路には、前記伝送線路が一対接続されていることを特徴とする請求項１乃至４のいずれか１項に記載のプリント回路板。   5. The transmission circuit according to claim 1, wherein the transmission circuit is a differential circuit that transmits a pair of differential signals as the digital signal, and a pair of the transmission lines is connected to the differential circuit. 6. A printed circuit board according to any one of the preceding claims. 請求項１乃至５のいずれか１項に記載のプリント回路板を備えた電子機器。  An electronic device comprising the printed circuit board according to claim 1.
JP2013079104A 2013-04-05 2013-04-05 Printed circuit board and electronic device Active JP6362057B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
WO2015160631A3 (en) Frequency multiplexer
TWI417008B (en) Printed circuit board and common mode filter thereof
WO2007132406A3 (en) Resonator device with shorted stub and mim-capacitor
JP2014039162A5 (en)
JP2012070279A5 (en) Signal transmission circuit, transmission device and circuit board
WO2016073293A3 (en) Transmission line reflectionless filters
JP2014121091A5 (en)
JP2013000590A5 (en)
WO2017203919A9 (en) Multiplexer, high-frequency front-end circuit, and communication apparatus
JP2014155155A5 (en) Printed circuit boards, printed wiring boards and electronic devices
US20150173174A1 (en) Multi-layer printed circuit board
JP2014171046A5 (en)
MX350068B (en) Power supply circuit and electronic device.
JP2014203976A5 (en) Printed circuit board and electronic device
WO2015008150A3 (en) Coupling arrangement between cavity filter resonators
JP2015012169A5 (en) Printed circuit board and electronic device
RU2014131907A (en) SIGNAL PROCESSING DEVICE
TWI566462B (en) Power processing circuit, duplex amplified circuit and multiplex amplified circuit
JP2014204297A5 (en) Printed circuit board and electronic device
WO2014105005A8 (en) Systems and methods for discharging an input capacitance
JP2013062791A5 (en)
WO2015186578A1 (en) Phase-shift circuit
JP6362057B2 (en) Printed circuit board and electronic device
JP2013078110A5 (en)
JP2015041980A5 (en)