JPS56111329A - Prescaler device - Google Patents

Prescaler device

Info

Publication number
JPS56111329A
JPS56111329A JP1433280A JP1433280A JPS56111329A JP S56111329 A JPS56111329 A JP S56111329A JP 1433280 A JP1433280 A JP 1433280A JP 1433280 A JP1433280 A JP 1433280A JP S56111329 A JPS56111329 A JP S56111329A
Authority
JP
Japan
Prior art keywords
filter
frequency
uhf
input terminal
filter block
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
JP1433280A
Other languages
Japanese (ja)
Other versions
JPS634372B2 (en
Inventor
Masao Takashima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1433280A priority Critical patent/JPS56111329A/en
Publication of JPS56111329A publication Critical patent/JPS56111329A/en
Publication of JPS634372B2 publication Critical patent/JPS634372B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Abstract

PURPOSE:To reduce spurious radiation and to improve stability by independently separating broad-band amplifier which covers frequency bands for UHF and VHF reception and then by arranging a high-frequency filter circuit at the input side of a preamplifier independently separately. CONSTITUTION:Local oscillation output part 41 of the tuner in UHF reception is connected to the 1st input terminal 51 of the 1st filter block 43 as a mixing part. This filter block 43 consists of high-frequency cutting filter part 43a for UHF frequencies and low-frequency cutting filter part 43b for VHF frequencies. Local oscillation output part 42 of the tuner in VHF reception is connected to the input terminal of the 2nd filter block 44 as an intermediate-frequency band low-frequency cutting filter, and output terminal 55 of this filter 44 is connected to the 2nd input terminal 52 to filter block 43. Its output is inputted from output terminal 53 to prescaler circuit 46 via broad-band amplifier 45. Thus, the need for adjustments of a coil, etc., can be liminated and the spurious radiation can be reduced.
JP1433280A 1980-02-08 1980-02-08 Prescaler device Granted JPS56111329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1433280A JPS56111329A (en) 1980-02-08 1980-02-08 Prescaler device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1433280A JPS56111329A (en) 1980-02-08 1980-02-08 Prescaler device

Publications (2)

Publication Number Publication Date
JPS56111329A true JPS56111329A (en) 1981-09-03
JPS634372B2 JPS634372B2 (en) 1988-01-28

Family

ID=11858111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1433280A Granted JPS56111329A (en) 1980-02-08 1980-02-08 Prescaler device

Country Status (1)

Country Link
JP (1) JPS56111329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717001A (en) * 1984-07-31 1988-01-05 Kabushiki Kaisha Daikin Seisakusho Friction clutch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4717001A (en) * 1984-07-31 1988-01-05 Kabushiki Kaisha Daikin Seisakusho Friction clutch

Also Published As

Publication number Publication date
JPS634372B2 (en) 1988-01-28

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