FR2578131B1 - Piege de frequence image suivant les variations d'accord - Google Patents

Piege de frequence image suivant les variations d'accord

Info

Publication number
FR2578131B1
FR2578131B1 FR868602729A FR8602729A FR2578131B1 FR 2578131 B1 FR2578131 B1 FR 2578131B1 FR 868602729 A FR868602729 A FR 868602729A FR 8602729 A FR8602729 A FR 8602729A FR 2578131 B1 FR2578131 B1 FR 2578131B1
Authority
FR
France
Prior art keywords
tuning
following changes
image frequency
frequency trap
trap following
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.)
Expired - Fee Related
Application number
FR868602729A
Other languages
English (en)
Other versions
FR2578131A1 (fr
Inventor
James Hettiger
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 FR2578131A1 publication Critical patent/FR2578131A1/fr
Application granted granted Critical
Publication of FR2578131B1 publication Critical patent/FR2578131B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/24—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
    • H03J3/26—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning the circuits being coupled so as to form a bandpass filter
    • 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
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • 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
    • H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
  • Superheterodyne Receivers (AREA)
  • Filters And Equalizers (AREA)
FR868602729A 1985-02-28 1986-02-27 Piege de frequence image suivant les variations d'accord Expired - Fee Related FR2578131B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/705,496 US4601062A (en) 1985-02-28 1985-02-28 Tracking image frequency trap

Publications (2)

Publication Number Publication Date
FR2578131A1 FR2578131A1 (fr) 1986-08-29
FR2578131B1 true FR2578131B1 (fr) 1992-03-20

Family

ID=24833736

Family Applications (1)

Application Number Title Priority Date Filing Date
FR868602729A Expired - Fee Related FR2578131B1 (fr) 1985-02-28 1986-02-27 Piege de frequence image suivant les variations d'accord

Country Status (8)

Country Link
US (1) US4601062A (fr)
JP (1) JPH0685499B2 (fr)
KR (1) KR930004132B1 (fr)
CA (1) CA1237480A (fr)
DE (1) DE3606433A1 (fr)
FR (1) FR2578131B1 (fr)
GB (1) GB2171872B (fr)
SG (1) SG45891G (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662001A (en) * 1985-08-15 1987-04-28 Zenith Electronics Corporation Tunable notch filter for image frequency and conducted local oscillator leakage rejection
US4894629A (en) * 1986-03-04 1990-01-16 Murata Manufacturing Co., Ltd. Bandpass filter having magnetically coupled resonators
US4835608A (en) * 1988-05-31 1989-05-30 Zenith Electronics Corporation Image trap filter circuit
US4956710A (en) * 1989-04-14 1990-09-11 Rca Licensing Corporation Television receiver tuner high pass input filter with CB trap
US4996599A (en) * 1989-04-14 1991-02-26 Rca Licensing Corporation Television tuner oscillator with three point tracking
US5054117A (en) * 1989-08-01 1991-10-01 Zenith Electronics Corporation Tunable UHF filter for switchable VHF/UHF receiver
GB2244403A (en) * 1989-08-30 1991-11-27 Jeremy Kenneth Arthur Everard A high Q helical resonator
FI91337C (fi) * 1990-04-27 1994-06-10 Nokia Mobile Phones Ltd Kytkentäjärjestely harhatoiston eliminoimiseksi radiopuhelimen vastaanottimessa
JPH0583149A (ja) * 1991-09-20 1993-04-02 Pioneer Electron Corp トラツプ回路
US5630225A (en) * 1992-08-17 1997-05-13 Motorola, Inc. Dielectric resonator image reject mixer and method
US5285179A (en) * 1992-08-28 1994-02-08 Thomson Consumer Electronics, Inc. Double tuned circuit with balanced output and image trap
US5392011A (en) * 1992-11-20 1995-02-21 Motorola, Inc. Tunable filter having capacitively coupled tuning elements
JPH06224644A (ja) * 1993-01-25 1994-08-12 Nec Corp 半導体装置
JPH09162766A (ja) * 1995-12-04 1997-06-20 Alps Electric Co Ltd 衛星放送受信チューナ
JPH09270602A (ja) * 1996-04-01 1997-10-14 Matsushita Electric Ind Co Ltd 受信装置
US6215374B1 (en) 1998-03-16 2001-04-10 Broadband Innovations, Inc. Magnetically coupled resonators for achieving low cost narrow band pass filters having high selectivity, low insertion loss and improved out-of-band rejection
DE102005056486A1 (de) * 2005-11-20 2007-05-31 Atmel Germany Gmbh Eingangsfilter zur Spiegelfrequenzunterdrückung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL48514C (fr) * 1934-04-04 1940-06-15
NL36084C (fr) * 1931-07-07
AT142712B (de) * 1933-04-05 1935-09-10 Hazeltine Corp Siebkreisanordnung.
US2075683A (en) * 1933-04-05 1937-03-30 Hazeltine Corp Image frequency rejection system
GB417410A (en) * 1933-08-03 1934-10-04 British Acoustic Films Ltd Filters for super-heterodyne circuits for wireless reception
GB470002A (en) * 1936-01-31 1937-08-03 Percy Armstrong Le Marchant Improvements in and relating to wireless and like receivers
US2250277A (en) * 1940-08-02 1941-07-22 Johnson Lab Inc Coupled circuit regenerative receiving system
US2449148A (en) * 1942-12-30 1948-09-14 Rca Corp Permeability tuned image attenuation circuits
US3289087A (en) * 1959-03-24 1966-11-29 Motorola Inc Image rejection circuit
US3487339A (en) * 1967-01-04 1969-12-30 Rca Corp Intermediate frequency coupling network having a sharply tuned sound carrier cancellation trap inductively coupled to the input circuit
US3519737A (en) * 1967-06-07 1970-07-07 Rca Corp Resonant bandpass filter having two undesired frequency cancellation traps
JPS5133916A (en) * 1974-09-17 1976-03-23 Matsushita Electric Ind Co Ltd Vhf terebijonchuuna no nyuryokukairo

Also Published As

Publication number Publication date
US4601062A (en) 1986-07-15
DE3606433C2 (fr) 1991-11-21
KR930004132B1 (ko) 1993-05-20
GB8604835D0 (en) 1986-04-03
GB2171872B (en) 1988-10-05
GB2171872A (en) 1986-09-03
JPS61205026A (ja) 1986-09-11
KR860006892A (ko) 1986-09-15
DE3606433A1 (de) 1986-08-28
CA1237480A (fr) 1988-05-31
JPH0685499B2 (ja) 1994-10-26
FR2578131A1 (fr) 1986-08-29
SG45891G (en) 1991-07-26

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse