JPS5744317A - Printed wiring board - Google Patents

Printed wiring board

Info

Publication number
JPS5744317A
JPS5744317A JP10820681A JP10820681A JPS5744317A JP S5744317 A JPS5744317 A JP S5744317A JP 10820681 A JP10820681 A JP 10820681A JP 10820681 A JP10820681 A JP 10820681A JP S5744317 A JPS5744317 A JP S5744317A
Authority
JP
Japan
Prior art keywords
input
output terminals
terminals
wave filter
surface wave
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
Application number
JP10820681A
Other languages
Japanese (ja)
Inventor
Tomoharu Genba
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 JP10820681A priority Critical patent/JPS5744317A/en
Publication of JPS5744317A publication Critical patent/JPS5744317A/en
Pending 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
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • 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)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

PURPOSE:To prevent the leakgae of an input signal due to floating capacity between input and an output conductor pattern on a printed wiring board for a surface wave filter, by providing an earth pattern between the conductor patterns connected to the input and output terminals of the surface wave filter. CONSTITUTION:The input terminal 1 of a surface wave filter 2 is connected to a conductor pattern 6 arranged on an insulating substrate 5, and the output terminals 3 are connected to the input terminals of a differential amplifier 8 through conductor patterns 7. An earth pattern 9 is narrowed between the input terminal 1 and output terminals 3 and connected to an earth terminal 4. Therefore, the number of electric force lines interposing between the terminals 1 and 3 decreases and floating capacity lessens, thereby reducing the leakage of an input signal to the output terminals due to electrostatic induction.
JP10820681A 1981-07-13 1981-07-13 Printed wiring board Pending JPS5744317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10820681A JPS5744317A (en) 1981-07-13 1981-07-13 Printed wiring board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10820681A JPS5744317A (en) 1981-07-13 1981-07-13 Printed wiring board

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP17680486A Division JPS6216612A (en) 1986-07-29 1986-07-29 Mounting printed circuit board for surface wave filter

Publications (1)

Publication Number Publication Date
JPS5744317A true JPS5744317A (en) 1982-03-12

Family

ID=14478702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10820681A Pending JPS5744317A (en) 1981-07-13 1981-07-13 Printed wiring board

Country Status (1)

Country Link
JP (1) JPS5744317A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6216612A (en) * 1986-07-29 1987-01-24 Toshiba Corp Mounting printed circuit board for surface wave filter
JPS62109417A (en) * 1985-11-07 1987-05-20 Yagi Antenna Co Ltd Filter device
JP2003528523A (en) * 2000-03-21 2003-09-24 エプコス アクチエンゲゼルシャフト Dual-mode surface wave filter with improved symmetry and increased stop attenuation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CONSOMER CIRCUITS APPLICATION NOTE=1975 *
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS=1975 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62109417A (en) * 1985-11-07 1987-05-20 Yagi Antenna Co Ltd Filter device
JPS6216612A (en) * 1986-07-29 1987-01-24 Toshiba Corp Mounting printed circuit board for surface wave filter
JP2003528523A (en) * 2000-03-21 2003-09-24 エプコス アクチエンゲゼルシャフト Dual-mode surface wave filter with improved symmetry and increased stop attenuation

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