JPS5578608A - Elastic surface wave type demodulator - Google Patents

Elastic surface wave type demodulator

Info

Publication number
JPS5578608A
JPS5578608A JP15243178A JP15243178A JPS5578608A JP S5578608 A JPS5578608 A JP S5578608A JP 15243178 A JP15243178 A JP 15243178A JP 15243178 A JP15243178 A JP 15243178A JP S5578608 A JPS5578608 A JP S5578608A
Authority
JP
Japan
Prior art keywords
output
surface wave
elastic surface
converter
converters
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
JP15243178A
Other languages
Japanese (ja)
Inventor
Kentaro Setsune
Yoshihiro Fujiwara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15243178A priority Critical patent/JPS5578608A/en
Publication of JPS5578608A publication Critical patent/JPS5578608A/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
    • H03D3/34—Demodulation of angle-, frequency- or phase- modulated oscillations by means of electromechanical devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To obtain a simple and miniature demodulator circuit along with the enhanced perfomance by obtaining the two detection output via the same elastic surface wave delay element and then securing the sum between the two output. CONSTITUTION:Elastic surface wave input converter 33 plus elastic surface wave output converters 35 and 36 are formed on substrate 31 in such relation of the position secured to the pattern shown in the diagram, and then elastic surface wave absorbing agent 32 is coated on substrate 31 and close to those converters. Thus the input is applied to both terminals of converter 33 which is not shown in the diagram, and transformers T1 and T2 are connected to both terminals of converters 35 and 36 each. In this instant, the output in fetched from converter 35 in the same state as the winding between transformers T1 and T2 and in series with windings L3 and L6, and at the same time windings L4 and L7 are connected also in series to fetch the output of converter 36. Furthermore, the output is fetched from secondary windings L5 and L6 each and then sent out to output terminal 37 which is earthed via resistance R7 and capacitor C8 through diodes D3 and D4. As a result, two detection characteristics 11 and 12 can be compounded into 13.
JP15243178A 1978-12-07 1978-12-07 Elastic surface wave type demodulator Pending JPS5578608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15243178A JPS5578608A (en) 1978-12-07 1978-12-07 Elastic surface wave type demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15243178A JPS5578608A (en) 1978-12-07 1978-12-07 Elastic surface wave type demodulator

Publications (1)

Publication Number Publication Date
JPS5578608A true JPS5578608A (en) 1980-06-13

Family

ID=15540369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15243178A Pending JPS5578608A (en) 1978-12-07 1978-12-07 Elastic surface wave type demodulator

Country Status (1)

Country Link
JP (1) JPS5578608A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083412A (en) * 1983-10-14 1985-05-11 Koji Toda Frequency discriminating element
JPS60132485A (en) * 1983-10-12 1985-07-15 エタブリシユメント　パブリツク　デ　デイフユ−ジヨン　デイツト　“テレデイフユ−ジヨン　デ　フランス” Analog and digital receiver circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132485A (en) * 1983-10-12 1985-07-15 エタブリシユメント　パブリツク　デ　デイフユ−ジヨン　デイツト　“テレデイフユ−ジヨン　デ　フランス” Analog and digital receiver circuit
JPS6083412A (en) * 1983-10-14 1985-05-11 Koji Toda Frequency discriminating element

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