JPS57107645A - Tuner - Google Patents

Tuner

Info

Publication number
JPS57107645A
JPS57107645A JP18491980A JP18491980A JPS57107645A JP S57107645 A JPS57107645 A JP S57107645A JP 18491980 A JP18491980 A JP 18491980A JP 18491980 A JP18491980 A JP 18491980A JP S57107645 A JPS57107645 A JP S57107645A
Authority
JP
Japan
Prior art keywords
1st
frequency
signal
2nd
mixer
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
JP18491980A
Inventor
Joji Nagai
Original Assignee
Toshiba Corp
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 filed Critical Toshiba Corp
Priority to JP18491980A priority Critical patent/JPS57107645A/en
Publication of JPS57107645A publication Critical patent/JPS57107645A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/26Circuits for superheterodyne receivers
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1218Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the generator being of the balanced type
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16Multiple-frequency-changing
    • H03D7/161Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B21/00Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
    • H03B21/02Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency

Abstract

PURPOSE: To cover the entire channel band and to exclude the interference of adjacent channels, by the frequency conversion of a sum or difference signal from the 1st and 2nd local oscillator and making further frequency conversion at one of a local oscillator.
CONSTITUTION: A high frequency signal from a terminal 1 is amplified at a high frequency amplifier 2 and applied to the 1st mixer 5. A sum or difference signal between the 1st and 2nd local oscillators 4, 9 is produced at a frequency mixer 30 and it is applied to the 1st mixer 5. The 1st intermediate signal frequency- converted is amplified at the 1st intermediate frequency amplifier 7. The 2nd intermediate frequency signal is formed at the 2nd mixer 10 by a signal from the 2nd local oscillator 9 and the 1st intermediate frequency signal. Thus, since the local oscillation frequency range is determined with a capacitance ratio of varactor diodes, the frequency range can be taken wider at the same capacitance cange and the interference at the adjacent channel can be excluded.
COPYRIGHT: (C)1982,JPO&Japio
JP18491980A 1980-12-25 1980-12-25 Tuner Pending JPS57107645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18491980A JPS57107645A (en) 1980-12-25 1980-12-25 Tuner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP18491980A JPS57107645A (en) 1980-12-25 1980-12-25 Tuner
KR810005034A KR860000441B1 (en) 1980-12-25 1981-12-21 Tunner
DE19813150625 DE3150625A1 (en) 1980-12-25 1981-12-21 tuner
GB8138978A GB2091508B (en) 1980-12-25 1981-12-24 Double superhet tuner

Publications (1)

Publication Number Publication Date
JPS57107645A true JPS57107645A (en) 1982-07-05

Family

ID=16161620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18491980A Pending JPS57107645A (en) 1980-12-25 1980-12-25 Tuner

Country Status (4)

Country Link
JP (1) JPS57107645A (en)
KR (1) KR860000441B1 (en)
DE (1) DE3150625A1 (en)
GB (1) GB2091508B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143691A (en) * 1983-07-22 1985-02-13 Plessey Co Plc A double superhet tuner
JPS6150354U (en) * 1984-09-03 1986-04-04
US5016242A (en) * 1988-11-01 1991-05-14 Gte Laboratories Incorporated Microwave subcarrier generation for fiber optic systems
US4979230A (en) * 1989-12-04 1990-12-18 General Instrument Corporation Up-conversion homodyne receiver for cable television converter with frequency offset to avoid adjacent channel interference
JPH0468907A (en) * 1990-07-09 1992-03-04 Kinseki Ltd Saw electronic component and frequency conversion circuit
CH682026A5 (en) * 1991-03-04 1993-06-30 Siemens Ag Albis
ES2040628B1 (en) * 1991-12-18 1995-12-16 Iglesias Angel Sa Undercarriage broadband frequencies.
JP3358183B2 (en) * 1993-04-09 2002-12-16 ソニー株式会社 Time division multiplexing transceiver
US5966646A (en) * 1997-05-13 1999-10-12 Ericsson, Inc. Dual-band radio receiver
GB0020527D0 (en) * 2000-08-22 2000-10-11 Mitel Semiconductor Ltd Digital tuner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414777A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Alarm device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414777A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Alarm device

Also Published As

Publication number Publication date
KR860000441B1 (en) 1986-04-19
KR830008557A (en) 1983-12-10
GB2091508A (en) 1982-07-28
DE3150625A1 (en) 1982-08-05
GB2091508B (en) 1984-05-31

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