JPS5617503A - Narrow-band amplifying circuit using surface wave filter - Google Patents

Narrow-band amplifying circuit using surface wave filter

Info

Publication number
JPS5617503A
JPS5617503A JP9295679A JP9295679A JPS5617503A JP S5617503 A JPS5617503 A JP S5617503A JP 9295679 A JP9295679 A JP 9295679A JP 9295679 A JP9295679 A JP 9295679A JP S5617503 A JPS5617503 A JP S5617503A
Authority
JP
Japan
Prior art keywords
amplifying circuit
surface wave
wave filter
voltage
narrow
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
JP9295679A
Other languages
Japanese (ja)
Inventor
Botaro Hirosaki
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
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9295679A priority Critical patent/JPS5617503A/en
Publication of JPS5617503A publication Critical patent/JPS5617503A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/42—Modifications of amplifiers to extend the bandwidth

Abstract

PURPOSE:To ensure the steady passing characteristics of the filter to the fluctuation of the earth potential, by connecting the surface wave filter to the output terminal of the front-step differential amplifying circuit and then connecting the rear-step differential amplifying circuit to the output terminal of the surface wave filter respectively. CONSTITUTION:The input voltage is applied between the input terminals 30 and 31 of front-step differential amplifying circuit 32, and the output of this circuit 32 is supplied to surface wave filter 33. Then the output of filter 33 is supplied to rear- step differential amplifying circuit 34 and then delivered between output terminals 35 and 36. As the differential amplifier is used for the amplifier, both the voltage between points P and Q plus the voltage between points R and S do not depend on the earth voltage and thus receives no effect of the standing wave on the earth which occurs at the front and rear areas of the surface wave filter. Thus the steady narrow-band passing characteristics can be obtained even in the high frequency region.
JP9295679A 1979-07-20 1979-07-20 Narrow-band amplifying circuit using surface wave filter Pending JPS5617503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9295679A JPS5617503A (en) 1979-07-20 1979-07-20 Narrow-band amplifying circuit using surface wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9295679A JPS5617503A (en) 1979-07-20 1979-07-20 Narrow-band amplifying circuit using surface wave filter

Publications (1)

Publication Number Publication Date
JPS5617503A true JPS5617503A (en) 1981-02-19

Family

ID=14068900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9295679A Pending JPS5617503A (en) 1979-07-20 1979-07-20 Narrow-band amplifying circuit using surface wave filter

Country Status (1)

Country Link
JP (1) JPS5617503A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197341A (en) * 1982-05-11 1983-11-17 株式会社豊田自動織機製作所 Treatment of mistake yarn in jet loom
JPS59168435U (en) * 1983-04-28 1984-11-10 積水化学工業株式会社 Patsuking
US4688606A (en) * 1985-02-07 1987-08-25 Tsudakoma Corporation Improper weft removing device for shuttleless looms

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414654A (en) * 1977-07-06 1979-02-03 Toshiba Corp Elastic surface wave device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414654A (en) * 1977-07-06 1979-02-03 Toshiba Corp Elastic surface wave device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197341A (en) * 1982-05-11 1983-11-17 株式会社豊田自動織機製作所 Treatment of mistake yarn in jet loom
JPS633984B2 (en) * 1982-05-11 1988-01-27 Toyota Jido Shotsuki Seisakusho Kk
JPS59168435U (en) * 1983-04-28 1984-11-10 積水化学工業株式会社 Patsuking
JPS6324178Y2 (en) * 1983-04-28 1988-07-04
US4688606A (en) * 1985-02-07 1987-08-25 Tsudakoma Corporation Improper weft removing device for shuttleless looms

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