JPS6423605A - Fm demodulator utilizing elastic surface wave delay line - Google Patents

Fm demodulator utilizing elastic surface wave delay line

Info

Publication number
JPS6423605A
JPS6423605A JP63154544A JP15454488A JPS6423605A JP S6423605 A JPS6423605 A JP S6423605A JP 63154544 A JP63154544 A JP 63154544A JP 15454488 A JP15454488 A JP 15454488A JP S6423605 A JPS6423605 A JP S6423605A
Authority
JP
Japan
Prior art keywords
interdigital transducer
delay
idt31
acoustic wave
surface acoustic
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
JP63154544A
Other languages
Japanese (ja)
Inventor
Eikou Sai
Gisei Gon
Seitai Chiyou
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of JPS6423605A publication Critical patent/JPS6423605A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/66—Phase shifters
    • H03H9/68—Phase shifters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
    • H03D3/16—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of electromechanical resonators

Abstract

PURPOSE: To eliminate the need for a tuning work during the process by using IDTs, designing a time delay between two IDTs to be an electrode interval of an interdigital transducer so as to keep a phase difference of 90 deg. accurately, thereby enhancing the S/N. CONSTITUTION: A surface acoustic wave delay line 31 is used for a time delay means, in which an input interdigital transducer IDT31 that converts an intermediate frequency signal into a surface acoustic wave, an output interdigital transducer IDT32 that converts the surface acoustic wave travelled from the input interdigital transducer IDT31 into an electric signal, and an output delay interdigital transducer IDT33 that is mounted to provide a delay time of about t0 from the signal through the output interdigital transducer IDT32 are vapor- depositted and configured on a piezoelectric substance 32. Then electrode arrangement of the interdigital transducers IDT31 -IDT33 is designed to provide a time delay at an interval coincident with width of the electrode to provide a phase difference of 90 deg. accurately. Thus, the element is made small, the S/N is improved and the manufacture process of an FM demodulator is reduced.
JP63154544A 1987-06-24 1988-06-22 Fm demodulator utilizing elastic surface wave delay line Pending JPS6423605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870006415A KR890004157B1 (en) 1987-06-24 1987-06-24 Fm demodulator constituting form using elasticity surface wave

Publications (1)

Publication Number Publication Date
JPS6423605A true JPS6423605A (en) 1989-01-26

Family

ID=19262314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63154544A Pending JPS6423605A (en) 1987-06-24 1988-06-22 Fm demodulator utilizing elastic surface wave delay line

Country Status (4)

Country Link
JP (1) JPS6423605A (en)
KR (1) KR890004157B1 (en)
DE (1) DE3821247A1 (en)
GB (1) GB2206760A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717820U (en) * 1991-08-06 1995-03-31 満 作井 Wave-dissipating block
JP2014096671A (en) * 2012-11-08 2014-05-22 Taiyo Yuden Co Ltd Switching device and module
US11718014B2 (en) 2019-04-08 2023-08-08 Canon Kabushiki Kaisha Imprint apparatus, imprint method, and method of manufacturing article

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746560B1 (en) * 1996-03-19 1998-05-07 Sagem DEMODULATION METHOD OF A FREQUENCY MODULATED CARRIER
KR100343873B1 (en) * 2000-03-22 2002-07-20 김희옥 Powder tooth paste with foam

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114855A (en) * 1975-04-01 1976-10-08 Nippon Telegr & Teleph Corp <Ntt> Acoustic surface wave frequency discriminator
JPS5279748A (en) * 1975-12-26 1977-07-05 Murata Manufacturing Co Surface acoustic wave device
JPS54142042A (en) * 1978-04-27 1979-11-05 Nec Corp Residual side band elastic surface wave filter
JPS5733819A (en) * 1980-08-08 1982-02-24 Sony Corp Surface elastic wave device
JPS61144903A (en) * 1984-12-19 1986-07-02 Hitachi Ltd Base band demodulator

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260525A (en) * 1969-03-31 1972-01-19 Zenith Radio Corp An acoustic electric filter system
US3626309A (en) * 1970-01-12 1971-12-07 Zenith Radio Corp Signal transmission system employing electroacoustic filter
US3750027A (en) * 1970-08-12 1973-07-31 Texas Instruments Inc Surface wave frequency discriminators
FR2167405B1 (en) * 1972-01-14 1976-06-11 Thomson Csf
US3843932A (en) * 1973-11-14 1974-10-22 Gte Sylvania Inc Wide band frequency modulation detector
US3936751A (en) * 1974-09-05 1976-02-03 Texas Instruments Incorporated SWD FM detector and IF filter
FR2312881A1 (en) * 1975-05-29 1976-12-24 Goff Jeannine Le DIFFERENTIAL DEMODULATORS WITH ELASTIC SURFACE WAVE DEVICES
GB1528048A (en) * 1975-08-26 1978-10-11 Nat Res Dev Programmable acoustic wave frequency discriminator
GB1517371A (en) * 1976-01-06 1978-07-12 Secr Defence Acoustic wave devices
FR2553610B1 (en) * 1983-10-12 1986-02-07 Telediffusion Fse MODULATED WAVE RECEPTION CIRCUIT EARLY IN FREQUENCY BY ANALOG SIGNAL AND EARLY IN PHASE BY DIGITAL SIGNAL
GB2193609A (en) * 1986-08-08 1988-02-10 Stc Plc Phase-modulation detector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114855A (en) * 1975-04-01 1976-10-08 Nippon Telegr & Teleph Corp <Ntt> Acoustic surface wave frequency discriminator
JPS5279748A (en) * 1975-12-26 1977-07-05 Murata Manufacturing Co Surface acoustic wave device
JPS54142042A (en) * 1978-04-27 1979-11-05 Nec Corp Residual side band elastic surface wave filter
JPS5733819A (en) * 1980-08-08 1982-02-24 Sony Corp Surface elastic wave device
JPS61144903A (en) * 1984-12-19 1986-07-02 Hitachi Ltd Base band demodulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0717820U (en) * 1991-08-06 1995-03-31 満 作井 Wave-dissipating block
JP2014096671A (en) * 2012-11-08 2014-05-22 Taiyo Yuden Co Ltd Switching device and module
US11718014B2 (en) 2019-04-08 2023-08-08 Canon Kabushiki Kaisha Imprint apparatus, imprint method, and method of manufacturing article

Also Published As

Publication number Publication date
GB8815058D0 (en) 1988-08-03
KR890001271A (en) 1989-03-20
DE3821247A1 (en) 1989-01-12
GB2206760A (en) 1989-01-11
KR890004157B1 (en) 1989-10-21

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