JPS6436112A - Surface acoustic wave filter - Google Patents

Surface acoustic wave filter

Info

Publication number
JPS6436112A
JPS6436112A JP19008187A JP19008187A JPS6436112A JP S6436112 A JPS6436112 A JP S6436112A JP 19008187 A JP19008187 A JP 19008187A JP 19008187 A JP19008187 A JP 19008187A JP S6436112 A JPS6436112 A JP S6436112A
Authority
JP
Japan
Prior art keywords
input
barrier
choke coil
surface acoustic
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
JP19008187A
Other languages
Japanese (ja)
Other versions
JPH06101661B2 (en
Inventor
Shinichi Kotajima
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP19008187A priority Critical patent/JPH06101661B2/en
Publication of JPS6436112A publication Critical patent/JPS6436112A/en
Publication of JPH06101661B2 publication Critical patent/JPH06101661B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To improve an out-band attenuation by providing a barrier incorporatedly to a board and connecting a choke coil between grounds of an input section and an output section so as to attain sufficient isolation between the input and output sections. CONSTITUTION:The barrier 7 is provided incorporatedly to the board 5 with the surface acoustic filter package 1 and impedance matching coils 8, 9 connected to input/output terminals 3, 4 mounted thereupon, and a choke coil 10 is fitted between both the barriers and connected between the grounds of the input/output terminals 3, 4. Thus, the barrier 7 is used to shield electromagnetically the input and output sections of the coils 8, 9 and the filter package 1 or the like thereby enhancing the isolation between the both. Moreover, the leakage around the ground caused by a ground potential from the choke coil 10 thereby attaining sufficient out-band attenuation.
JP19008187A 1987-07-31 1987-07-31 Surface acoustic wave filter Expired - Lifetime JPH06101661B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19008187A JPH06101661B2 (en) 1987-07-31 1987-07-31 Surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19008187A JPH06101661B2 (en) 1987-07-31 1987-07-31 Surface acoustic wave filter

Publications (2)

Publication Number Publication Date
JPS6436112A true JPS6436112A (en) 1989-02-07
JPH06101661B2 JPH06101661B2 (en) 1994-12-12

Family

ID=16252048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19008187A Expired - Lifetime JPH06101661B2 (en) 1987-07-31 1987-07-31 Surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPH06101661B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082522A (en) * 1990-08-14 1992-01-21 Texas Instruments Incorporated Method for forming patterned diamond thin films
WO2005026308A1 (en) 2003-09-12 2005-03-24 Fumakilla Limited Composition for removing dust
WO2005060092A1 (en) 2003-12-15 2005-06-30 Murata Manufacturing Co., Ltd. Noise filter mounting structure
JP2014179967A (en) * 2013-02-15 2014-09-25 Murata Mfg Co Ltd Polar low pass filter and demultiplexer having the same
WO2015019794A1 (en) * 2013-08-06 2015-02-12 株式会社村田製作所 High-frequency module

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082522A (en) * 1990-08-14 1992-01-21 Texas Instruments Incorporated Method for forming patterned diamond thin films
WO2005026308A1 (en) 2003-09-12 2005-03-24 Fumakilla Limited Composition for removing dust
WO2005060092A1 (en) 2003-12-15 2005-06-30 Murata Manufacturing Co., Ltd. Noise filter mounting structure
EP1696559A1 (en) * 2003-12-15 2006-08-30 Murata Manufacturing Co., Ltd. Noise filter mounting structure
EP1696559A4 (en) * 2003-12-15 2009-04-29 Murata Manufacturing Co Noise filter mounting structure
JP2014179967A (en) * 2013-02-15 2014-09-25 Murata Mfg Co Ltd Polar low pass filter and demultiplexer having the same
US9444424B2 (en) 2013-02-15 2016-09-13 Murata Manufacturing Co., Ltd. Polar-type low pass filter and demultiplexer equipped therewith
WO2015019794A1 (en) * 2013-08-06 2015-02-12 株式会社村田製作所 High-frequency module
JPWO2015019794A1 (en) * 2013-08-06 2017-03-02 株式会社村田製作所 High frequency module
US9917569B2 (en) 2013-08-06 2018-03-13 Murata Manufacturing Co., Ltd. High-frequency module

Also Published As

Publication number Publication date
JPH06101661B2 (en) 1994-12-12

Similar Documents

Publication Publication Date Title
CA2027265A1 (en) Magnetically shielded electromagnetic acoustic transducer
JPS5660004A (en) Parts of insulated inductance
JPS5753103A (en) Antenna transducer
JPS6436112A (en) Surface acoustic wave filter
GB2366170B (en) Method and apparatus for reducing radiant noise energy
GB2263585A (en) Multi-stage monolithic ceramic bandstop filter with isolated filter stages
FR2549314B1 (en) QUADRUPOLE OF ADAPTATION, INDEPENDENT OF THE OPERATING FREQUENCY, OF A REACTANCE, AND PROGRESSIVE WAVE AMPLIFIER USING SUCH A QUADRUPOLE
EP0044732A3 (en) Acoustic surface wave transducer with improved inband frequency characteristics
JPS5754414A (en) Attenuator circuit
DE3365827D1 (en) Vibration attenuating coupling
JPS5789305A (en) Inductive radio antenna
EP0677978A3 (en) Appliance for signal transmission from an amplifier to a loudspeaker.
JPS57204605A (en) Transducer
KR950007197A (en) Power cable / connector with surge and electromagnetic noise isolation
JPS5558601A (en) Isolator-type distributing and synthesizing unit
JPS5757018A (en) Surface acoustic wave filter
JPS6484904A (en) Surface acoustic wave device
JPS57129013A (en) Surface acoustic wave filter
JPS5728310A (en) Divided transformer
JPS6477306A (en) High frequency amplifier
JPS5768561A (en) Noise-free ignition device for internal combustion engine
JPS6458129A (en) Power supply circuit for optical repeater
JPS5625817A (en) Directional coupler
JPS56104513A (en) High frequency filter
JPS57103404A (en) Microwave wide-band circulator