ES8402124A1 - Un filtro pasa-banda resonante de dos circuitos. - Google Patents

Un filtro pasa-banda resonante de dos circuitos.

Info

Publication number
ES8402124A1
ES8402124A1 ES521207A ES521207A ES8402124A1 ES 8402124 A1 ES8402124 A1 ES 8402124A1 ES 521207 A ES521207 A ES 521207A ES 521207 A ES521207 A ES 521207A ES 8402124 A1 ES8402124 A1 ES 8402124A1
Authority
ES
Spain
Prior art keywords
bandpass filter
double
circuit
tuned resonant
channel selectors
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
Application number
ES521207A
Other languages
English (en)
Other versions
ES521207A0 (es
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES521207A0 publication Critical patent/ES521207A0/es
Publication of ES8402124A1 publication Critical patent/ES8402124A1/es
Expired 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

Landscapes

  • Filters And Equalizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

FILTRO DE PASABANDA RESONANTE DE DOS CIRCUITOS PARA SINTONIZADORES DE TELEVISION.CONSTA DE CONMUTADORES ELECTRONICOS PARA CONMUTAR EL FILTRO, DESDE UNA PRIMERA BANDA DE FRECUENCIAS A UNA SEGUNDA BANDA DE FRECUENCIAS, EN LA QUE DOS CIRCUITOS SECUNDARIOS ACOPLADOS AL CIRCUITO PRIMARIO Y A SU VEZ ACOPLADOS CADA UNO A LA ETAPA MEZCLADORA POR VIA DE UN CONMUTADOR ELECTRONICO Y CONECTANDO EL CIRCUITO PRIMARIO AL SECUNDARIO PARA BANDA DE FRECUENCIA MAS ALTAS. Y EN LA QUE UN SEGUNDO CONMUTADOR ESTANDO CERRADO, CORTOCIRCUITA LA ENTRADA DEL SEGUNDO CIRCUITO SECUNDARIO POR VIA DE REACTANCIAPARA LA BANDA DE FRECUENCIAS INFERIORES Y ESTANDO ABIERTO SEPARA EL CIRCUITO SECUNDARIO DEL CIRCUITO PRIMARIO PARA LA BANDA DE FRECUENCIAS MAS ALTAS. DANDO UN ACOPLAMIENTO INDUCTIVO DE DERIVACION, PORQUE LA BOBINA DEL CIRCUITO PRIMARIO TIENE DOS RAMALES, CONECTADO POR VIA DEL SEGUNDO CONMUTADOR ELECTRONICO A LA INDUCTANCIA DE ACOPLAMIENTO PARA LA BANDA DE FRECUENCIAS MAS ALTAS, EL RAMAL QUE TIENE LA SEÑAL MAS ALTA YEL REGUNDO RAMAL A TIERRA PARA UNA SECCION DE BOBINA, PROPORCIONA LA INDUCTANCIA DE ACOPLAMIENTO PARA LA BANDA DE FRECUENCIA MAS BAJA SECUNDARIO POR VIA DE REACTANCIAEN EL CIRCUITO PRIMARIO.
ES521207A 1982-04-06 1983-04-02 Un filtro pasa-banda resonante de dos circuitos. Expired ES8402124A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823212731 DE3212731A1 (de) 1982-04-06 1982-04-06 Zweikreisiges resonanz-bandfilter fuer kanalwaehler

Publications (2)

Publication Number Publication Date
ES521207A0 ES521207A0 (es) 1984-01-01
ES8402124A1 true ES8402124A1 (es) 1984-01-01

Family

ID=6160329

Family Applications (1)

Application Number Title Priority Date Filing Date
ES521207A Expired ES8402124A1 (es) 1982-04-06 1983-04-02 Un filtro pasa-banda resonante de dos circuitos.

Country Status (6)

Country Link
US (1) US4573211A (es)
EP (1) EP0091169B1 (es)
DE (2) DE3212731A1 (es)
ES (1) ES8402124A1 (es)
HK (1) HK40788A (es)
SG (1) SG11388G (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507865A1 (de) * 1985-03-06 1986-09-11 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung fuer einen tuner zur umschaltung mehrerer frequenzbereiche
FR2620882A1 (fr) * 1987-09-18 1989-03-24 Schlumberger Ind Sa Ameliorations apportees a ou concernant des circuits de commutation, en particulier des circuits destines aux commutateurs heterodyne
US5020092A (en) * 1989-06-23 1991-05-28 Motorola, Inc. Dual-bandwidth cellular telephone
US4972455A (en) * 1989-06-23 1990-11-20 Motorola, Inc. Dual-bandwidth cellular telephone
US5287556A (en) * 1990-09-28 1994-02-15 Motorola, Inc. Interference reduction using an adaptive receiver filter, signal strength, and BER sensing
JP3020389B2 (ja) * 1993-08-19 2000-03-15 シャープ株式会社 チューナ回路
DE19628186A1 (de) * 1996-07-12 1998-01-15 Philips Patentverwaltung Umschaltbares Bandfilter für Mehrband-Tuner
US6472957B1 (en) * 2001-08-28 2002-10-29 Zenith Electronics Corporation Low power switchable filter tuner
DE10300892A1 (de) * 2003-01-13 2004-07-22 Deutsche Thomson-Brandt Gmbh Schaltbares abstimmbares Bandfilter mit optimiertem Frequenzgang
GB2536287B (en) * 2015-03-13 2021-08-04 Technetix Bv Power inserter device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261191B (de) * 1965-05-28 1968-02-15 Philips Patentverwaltung Mischschaltung
DE2523536A1 (de) * 1975-05-27 1976-12-02 Graetz Kg Schaltungsanordnung zur umschaltung zweier frequenzbereiche mit grossem frequenzhub, insbesondere fuer fernsehtuner
DE2828838C2 (de) * 1977-07-01 1983-10-20 Hitachi, Ltd., Tokyo HF-Eingangsschaltung für Fernsehempfänger
DE2849178A1 (de) * 1978-11-13 1980-05-29 Philips Patentverwaltung Schaltungsanordnung fuer die anpassungs- und frequenzbereichsumschaltung der frequenzbestimmenden elemente und der verstaerkerelemente in einer abstimmeinrichtung, d.h. sogenanntem tuner, eines fernsehempfaengers
US4408348A (en) * 1981-08-19 1983-10-04 Rca Corporation Multiband tuning system for a television receiver
US4418427A (en) * 1982-03-30 1983-11-29 Rca Corporation Tuning system for a multi-band television receiver

Also Published As

Publication number Publication date
US4573211A (en) 1986-02-25
ES521207A0 (es) 1984-01-01
EP0091169A3 (en) 1985-07-10
HK40788A (en) 1988-06-10
EP0091169A2 (de) 1983-10-12
EP0091169B1 (de) 1987-09-30
DE3212731A1 (de) 1983-10-06
DE3373961D1 (en) 1987-11-05
SG11388G (en) 1989-11-17

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20010301