FR2322481A1 - POLARIZATION CIRCUIT FOR VARACTOR TELEVISION TUNER MIXER - Google Patents

POLARIZATION CIRCUIT FOR VARACTOR TELEVISION TUNER MIXER

Info

Publication number
FR2322481A1
FR2322481A1 FR7625374A FR7625374A FR2322481A1 FR 2322481 A1 FR2322481 A1 FR 2322481A1 FR 7625374 A FR7625374 A FR 7625374A FR 7625374 A FR7625374 A FR 7625374A FR 2322481 A1 FR2322481 A1 FR 2322481A1
Authority
FR
France
Prior art keywords
varactor
television tuner
polarization circuit
mixer
tuner 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.)
Granted
Application number
FR7625374A
Other languages
French (fr)
Other versions
FR2322481B1 (en
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of FR2322481A1 publication Critical patent/FR2322481A1/en
Application granted granted Critical
Publication of FR2322481B1 publication Critical patent/FR2322481B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • H03D7/125—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
FR7625374A 1975-08-25 1976-08-20 POLARIZATION CIRCUIT FOR VARACTOR TELEVISION TUNER MIXER Granted FR2322481A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60769875A 1975-08-25 1975-08-25

Publications (2)

Publication Number Publication Date
FR2322481A1 true FR2322481A1 (en) 1977-03-25
FR2322481B1 FR2322481B1 (en) 1980-05-30

Family

ID=24433332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625374A Granted FR2322481A1 (en) 1975-08-25 1976-08-20 POLARIZATION CIRCUIT FOR VARACTOR TELEVISION TUNER MIXER

Country Status (15)

Country Link
JP (1) JPS591011B2 (en)
AT (1) AT371651B (en)
AU (1) AU507375B2 (en)
BE (1) BE845467A (en)
DE (1) DE2638310C3 (en)
DK (1) DK380976A (en)
ES (1) ES450963A1 (en)
FI (1) FI63645C (en)
FR (1) FR2322481A1 (en)
GB (1) GB1553869A (en)
IT (1) IT1067991B (en)
NL (1) NL7609401A (en)
PL (1) PL108050B1 (en)
SE (1) SE405667B (en)
ZA (1) ZA764974B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150037A2 (en) * 1984-01-20 1985-07-31 Deutsche Thomson-Brandt GmbH Band-dependent switchable VHF mixer circuit arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630401Y2 (en) * 1990-06-01 1994-08-17 橋本電機工業株式会社 Veneer tenderizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976944A (en) * 1975-02-13 1976-08-24 General Electric Company Bias optimized FET mixer for varactor tuner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970254A (en) * 1974-08-19 1976-07-20 Black Clawson Fibreclaim, Inc. Method for separating glass from heat resistant materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976944A (en) * 1975-02-13 1976-08-24 General Electric Company Bias optimized FET mixer for varactor tuner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/70 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150037A2 (en) * 1984-01-20 1985-07-31 Deutsche Thomson-Brandt GmbH Band-dependent switchable VHF mixer circuit arrangement
WO1985003393A1 (en) * 1984-01-20 1985-08-01 Deutsche Thomson-Brandt Gmbh Band-dependent switchable vhf mixer circuit arrangement
EP0150037A3 (en) * 1984-01-20 1985-08-14 Deutsche Thomson-Brandt Gmbh Band-dependent switchable vhf mixer circuit arrangement

Also Published As

Publication number Publication date
DE2638310B2 (en) 1978-01-05
IT1067991B (en) 1985-03-21
SE7609198L (en) 1977-02-26
NL7609401A (en) 1977-03-01
JPS5227206A (en) 1977-03-01
FI762357A (en) 1977-02-26
DE2638310C3 (en) 1981-11-05
DE2638310A1 (en) 1977-03-03
ZA764974B (en) 1977-07-27
BE845467A (en) 1976-12-16
PL108050B1 (en) 1980-03-31
ATA630276A (en) 1982-11-15
DK380976A (en) 1977-02-26
FI63645B (en) 1983-03-31
AT371651B (en) 1983-07-25
JPS591011B2 (en) 1984-01-10
GB1553869A (en) 1979-10-10
ES450963A1 (en) 1977-08-16
SE405667B (en) 1978-12-18
FI63645C (en) 1983-07-11
AU1695976A (en) 1978-02-23
FR2322481B1 (en) 1980-05-30
AU507375B2 (en) 1980-02-14

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Legal Events

Date Code Title Description
ST Notification of lapse