JPS5744316A - Printed wiring board - Google Patents

Printed wiring board

Info

Publication number
JPS5744316A
JPS5744316A JP10820581A JP10820581A JPS5744316A JP S5744316 A JPS5744316 A JP S5744316A JP 10820581 A JP10820581 A JP 10820581A JP 10820581 A JP10820581 A JP 10820581A JP S5744316 A JPS5744316 A JP S5744316A
Authority
JP
Japan
Prior art keywords
input
output terminals
conductor patterns
wiring board
output
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
JP10820581A
Other languages
Japanese (ja)
Other versions
JPS5925524B2 (en
Inventor
Tomoharu Genba
Atsushi Kikuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10820581A priority Critical patent/JPS5925524B2/en
Publication of JPS5744316A publication Critical patent/JPS5744316A/en
Publication of JPS5925524B2 publication Critical patent/JPS5925524B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/0538—Constructional combinations of supports or holders with electromechanical or other electronic elements
    • H03H9/0542—Constructional combinations of supports or holders with electromechanical or other electronic elements consisting of a lateral arrangement
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Structure Of Printed Boards (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To prevent the leakage of an input signal due to floating capacity by equalizing an interval between two output conductors, which lead out mutually out- of-phase output signals, to that between input conductor patterns on a wiring board for a surface wave filter. CONSTITUTION:The input terminal 1 of a surface wave filter 2 is connected to the 1st conductor pattern 6 arranged on an insulating substrate 5, and two output terminals 3 outputting mutually out-of-phase signals are connected to the input terminals of a differential amplifier 8 through the 2nd conductor patterns 7. Distances between the tip of the conductor pattern 6 and those of the conductor patterns 7 are equalized, and between those tip parts, an earth pattern 9 is provided. At this time, although some of an input signal appears at two output terminals owing to floating capacity between the input and output terminals while the values are equal, they are canceled by the differential amplifier 8, so that no influence is exerted upon a poststage circuit.
JP10820581A 1981-07-13 1981-07-13 Printed wiring board with surface wave filter mounted on it Expired JPS5925524B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10820581A JPS5925524B2 (en) 1981-07-13 1981-07-13 Printed wiring board with surface wave filter mounted on it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10820581A JPS5925524B2 (en) 1981-07-13 1981-07-13 Printed wiring board with surface wave filter mounted on it

Publications (2)

Publication Number Publication Date
JPS5744316A true JPS5744316A (en) 1982-03-12
JPS5925524B2 JPS5925524B2 (en) 1984-06-19

Family

ID=14478679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10820581A Expired JPS5925524B2 (en) 1981-07-13 1981-07-13 Printed wiring board with surface wave filter mounted on it

Country Status (1)

Country Link
JP (1) JPS5925524B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1237275A2 (en) * 2001-03-01 2002-09-04 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1237275A2 (en) * 2001-03-01 2002-09-04 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device
EP1237275A3 (en) * 2001-03-01 2007-08-29 Murata Manufacturing Co., Ltd. Surface acoustic wave device and communications device

Also Published As

Publication number Publication date
JPS5925524B2 (en) 1984-06-19

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