JPS6423611A - Polarized type surface acoustic wave resonator filter - Google Patents

Polarized type surface acoustic wave resonator filter

Info

Publication number
JPS6423611A
JPS6423611A JP17976787A JP17976787A JPS6423611A JP S6423611 A JPS6423611 A JP S6423611A JP 17976787 A JP17976787 A JP 17976787A JP 17976787 A JP17976787 A JP 17976787A JP S6423611 A JPS6423611 A JP S6423611A
Authority
JP
Japan
Prior art keywords
resonators
saw
acoustic wave
surface acoustic
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.)
Pending
Application number
JP17976787A
Other languages
Japanese (ja)
Inventor
Izumi Kawakami
Katsuhiko Gunji
Kyoji Washitani
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP17976787A priority Critical patent/JPS6423611A/en
Publication of JPS6423611A publication Critical patent/JPS6423611A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To realize a broad-band filter and further to realize a steep attenua tion characteristic, as well by constituting a polarized type SAW (surface acous tic wave) resonator filter with which jumping coupling can be made in such a way that SAW resonators are connected in parallel with each other and electrodes are two-dimensionally arranged. CONSTITUTION:Electric signals impressed from electric signal inputting terminals 11 and 12 are converted into surface waves by means of the interdigital transduc er IDT of a surface acoustic wave (SAW) resonator 16. SAW resonators 17 and 18 respectively operate as double mode resonators together with the other and the resonators 16-18 operate as multiplex mode filters, namely, as monolith ic crystal filters (MCF) in such a way that couplings K12, K23, and K13 are respectively produced between the resonators 16 and 17, resonators 17 and 18, and resonators 16 and 18. At frequencies, at which phases of the signal to a route 1 and signal to another route 2 offset each other, an attenuation pole is produced in a limited frequency.
JP17976787A 1987-07-18 1987-07-18 Polarized type surface acoustic wave resonator filter Pending JPS6423611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17976787A JPS6423611A (en) 1987-07-18 1987-07-18 Polarized type surface acoustic wave resonator filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17976787A JPS6423611A (en) 1987-07-18 1987-07-18 Polarized type surface acoustic wave resonator filter

Publications (1)

Publication Number Publication Date
JPS6423611A true JPS6423611A (en) 1989-01-26

Family

ID=16071529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17976787A Pending JPS6423611A (en) 1987-07-18 1987-07-18 Polarized type surface acoustic wave resonator filter

Country Status (1)

Country Link
JP (1) JPS6423611A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04249906A (en) * 1990-12-27 1992-09-04 Murata Mfg Co Ltd Surface acoustic wave filter
JPH04249907A (en) * 1990-12-27 1992-09-04 Murata Mfg Co Ltd Surface acoustic wave filter
US6140890A (en) * 1997-11-12 2000-10-31 Nec Corporation Saw filter with multiple reflector pairs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04249906A (en) * 1990-12-27 1992-09-04 Murata Mfg Co Ltd Surface acoustic wave filter
JPH04249907A (en) * 1990-12-27 1992-09-04 Murata Mfg Co Ltd Surface acoustic wave filter
US6140890A (en) * 1997-11-12 2000-10-31 Nec Corporation Saw filter with multiple reflector pairs

Similar Documents

Publication Publication Date Title
CA2110362A1 (en) Surface Acoustic Wave Filter and Mobile Communication System Using Same
CN1073306C (en) Surface acoustic wave device
EP0584761B2 (en) Surface acoustic wave resonator filter
US5499003A (en) Differential saw filter including series coupled resonant/antiresonant tracks
CA2234513A1 (en) Surface acoustic wave device
CA2262977A1 (en) Elliptic filter and method of making the same
GB1529942A (en) Electrical filters including coupled resonators
KR930015319A (en) Surface acoustic wave filter
JPS6423611A (en) Polarized type surface acoustic wave resonator filter
GB850406A (en) Mechanical frequency filters
EP0827274A3 (en) Surface acoustic wave resonator filter
Onoe Crystal, ceramic, and mechanical filters in Japan
GB1381912A (en) Acoustic wave devices
EP0387679A2 (en) Surface acoustic wave band-pass filter
GB1514218A (en) Electromechanical resonance device and its application to filtering of television signals
JP2000349589A (en) Surface acoustic wave filter
GB2100950A (en) Crystal filter
JPH04253414A (en) Branch filter using surface acoustic wave resonator composite filter
JPH0969750A (en) Surface wave resonator
GB1424688A (en) Filters for electrical oscillations
JPS6484909A (en) Surface acoustic wave device
JPH0661782A (en) Surface acoustic wave filter, branching device and mobile radio equipment
RU94018407A (en) SURFACE FILTER ON SURFACE ACOUSTIC WAVES
JPS6170813A (en) Surface acoustic wave branching filter
JPS5787228A (en) Monolithic filter