JPS5527727A - Wide-band electronic tuner - Google Patents

Wide-band electronic tuner

Info

Publication number
JPS5527727A
JPS5527727A JP10061678A JP10061678A JPS5527727A JP S5527727 A JPS5527727 A JP S5527727A JP 10061678 A JP10061678 A JP 10061678A JP 10061678 A JP10061678 A JP 10061678A JP S5527727 A JPS5527727 A JP S5527727A
Authority
JP
Japan
Prior art keywords
frequency
oscillator
oscillation frequency
band
local
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
JP10061678A
Other languages
Japanese (ja)
Inventor
Tsutomu Nishino
Morikazu Sagawa
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 JP10061678A priority Critical patent/JPS5527727A/en
Publication of JPS5527727A publication Critical patent/JPS5527727A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To obtain the local oscillation frequency for the entire U-V band through the same circuit constitution by installing the voltage control type oscillator as well as the fixed oscillator featuring the frequency the several times as high as the upper limit frequency of the reception frequency band and then defying the difference of the frequencies between the two oscillators. CONSTITUTION:In the frequency range higher than the reception frequency region, the oscillation output of oscillators 36 and 37 which satisfies the relation of (the frequency of voltage control type oscillator 36-the oscillation frequency of fixed oscillator 37=the frequency of each channel+the intermediate frequency) receive the mixing conversion through mixer 35 for the local oscillator. Thus the local oscillation frequency is generated to be supplied to main mixer 32. As a result, the frequencies of oscillators 36 and 37 feature a high level of at least more than 2GHz, and thus the relative band width can be reduced relatively down to 50% or less to the maximam variable oscillation frequency in case the local oscillation frequency range 36 is within 1-2GHz. As a result, the local oscillation frequency of oscillator of the entire U-V band can be covered within the capacity variation range of the varactor diode, thus constituting the local oscillator into one body with U-V.
JP10061678A 1978-08-17 1978-08-17 Wide-band electronic tuner Pending JPS5527727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10061678A JPS5527727A (en) 1978-08-17 1978-08-17 Wide-band electronic tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10061678A JPS5527727A (en) 1978-08-17 1978-08-17 Wide-band electronic tuner

Publications (1)

Publication Number Publication Date
JPS5527727A true JPS5527727A (en) 1980-02-28

Family

ID=14278768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10061678A Pending JPS5527727A (en) 1978-08-17 1978-08-17 Wide-band electronic tuner

Country Status (1)

Country Link
JP (1) JPS5527727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296709A (en) * 1988-05-24 1989-11-30 Sony Corp Digital filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296709A (en) * 1988-05-24 1989-11-30 Sony Corp Digital filter

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