JPS6419814A - Leaky saw resonator - Google Patents

Leaky saw resonator

Info

Publication number
JPS6419814A
JPS6419814A JP17666287A JP17666287A JPS6419814A JP S6419814 A JPS6419814 A JP S6419814A JP 17666287 A JP17666287 A JP 17666287A JP 17666287 A JP17666287 A JP 17666287A JP S6419814 A JPS6419814 A JP S6419814A
Authority
JP
Japan
Prior art keywords
leaky saw
resonator
reflecting device
wave
idt
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
JP17666287A
Other languages
Japanese (ja)
Other versions
JP2745012B2 (en
Inventor
Takao Morita
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment 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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Priority to JP62176662A priority Critical patent/JP2745012B2/en
Publication of JPS6419814A publication Critical patent/JPS6419814A/en
Application granted granted Critical
Publication of JP2745012B2 publication Critical patent/JP2745012B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PURPOSE:To realize a leaky SAW resonator excellent in a temperature charac teristic and high in Q in a high frequency area by applying the relation of LT/LR=0.998+ or -0.001 between the cycle of LT of an IDT and the cycle LR of a reflecting device. CONSTITUTION:The IDT 2 for exciting a leaky SAW wave and the reflecting device 3 for forming the resonator for enclosing the leaky SAW wave are disposed along the advancing direction of the wave on the surface of a -74 deg. rotation Y cut crystal substrate 1. The periodical ratio LT/LR of the LDT and the reflecting device is defined to be 0.998+ or -0.001. Thereby, the resonator high in Q, small in a resonating resistance and large in a figure of merit (=Q/gamma) can be obtained.
JP62176662A 1987-07-15 1987-07-15 Leaky SAW resonator Expired - Fee Related JP2745012B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62176662A JP2745012B2 (en) 1987-07-15 1987-07-15 Leaky SAW resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62176662A JP2745012B2 (en) 1987-07-15 1987-07-15 Leaky SAW resonator

Publications (2)

Publication Number Publication Date
JPS6419814A true JPS6419814A (en) 1989-01-23
JP2745012B2 JP2745012B2 (en) 1998-04-28

Family

ID=16017508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62176662A Expired - Fee Related JP2745012B2 (en) 1987-07-15 1987-07-15 Leaky SAW resonator

Country Status (1)

Country Link
JP (1) JP2745012B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02194714A (en) * 1989-01-24 1990-08-01 Toyo Commun Equip Co Ltd Leaky saw resonator
US5729186A (en) * 1995-04-12 1998-03-17 Matsushita Electric Industrial Co., Ltd. Resonator ladder surface acoustic wave filter suppressing spurious signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213110A (en) * 1984-04-06 1985-10-25 Toyo Commun Equip Co Ltd Two-port type elastic surface wave resonator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213110A (en) * 1984-04-06 1985-10-25 Toyo Commun Equip Co Ltd Two-port type elastic surface wave resonator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02194714A (en) * 1989-01-24 1990-08-01 Toyo Commun Equip Co Ltd Leaky saw resonator
US5729186A (en) * 1995-04-12 1998-03-17 Matsushita Electric Industrial Co., Ltd. Resonator ladder surface acoustic wave filter suppressing spurious signals

Also Published As

Publication number Publication date
JP2745012B2 (en) 1998-04-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees