ES2036254T3 - Circuito de entrada rf-tv. - Google Patents

Circuito de entrada rf-tv.

Info

Publication number
ES2036254T3
ES2036254T3 ES198888201464T ES88201464T ES2036254T3 ES 2036254 T3 ES2036254 T3 ES 2036254T3 ES 198888201464 T ES198888201464 T ES 198888201464T ES 88201464 T ES88201464 T ES 88201464T ES 2036254 T3 ES2036254 T3 ES 2036254T3
Authority
ES
Spain
Prior art keywords
radio frequency
series
frequency
mhz
inductance
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 - Lifetime
Application number
ES198888201464T
Other languages
English (en)
Inventor
Johannes Hendricus Hendriks
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
Application granted granted Critical
Publication of ES2036254T3 publication Critical patent/ES2036254T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Filters And Equalizers (AREA)

Abstract

CIRCUITO DE ENTRADA DE TELEVISION-RADIOFRECUENCIA DOTADO DE UN ACOPLAMIENTO DE RADIOFRECUENCIA A TRAVES DEL CUAL UNA ENTRADA DE ANTENA VA ACOPLADA A UN PRIMER, A UN SEGUNDO Y A UN TERCER CIRCUITOS RESONANTES (11,21,31) DE RADIOFRECUENCIA SINTONIZABLES PARALELOS PARA SELECCION PARALELA DE UNA FRECUENCIA DESEADA EN UNA PRIMERA, UNA SEGUNDA Y UNA TERCERA BANDAS DE FRECUENCIA DE TELEVISION (50-160 MHZ; 160-470 MHZ; 470-860 MHZ) QUE VAN UNO DETRAS DE OTRO EN FRECUENCIA. DICHO ACOPLAMIENTO DE RADIOFRECUENCIA TIENE UNA SECCION (MU) DE PASO ALTO (C,L2,L3) PARA SUPRIMIR LAS FRECUENCIAS POR DEBAJO DE LA PRIMERA BANDA DE FRECUENCIA DE TELEVISION Y LLEVA UNA DERIVACION DE SERIE CAPACITIVA Y UNA PRIMERA Y UNA SEGUNDA DERIVACIONES INDUCTIVAS. DICHA SECCION (MU) (C,L2,L3) VA ACOPLADA A TRAVES DE UNA PRIMERA INDUCTANCIA EN SERIE (L1) AL PRIMER CIRCUITO RESONANTE DE RADIOFRECUENCIA (11). PARA GARANTIZAR, SIN ELEMENTOS EXTRAS, LA ALIMENTACION LIBRE DE REFLEXIONES DE LAS SEÑALES DE RECEPCION A CADA UNO DELOS CIRCUITOS RESONANTES DE RADIOFRECUENCIA, HAY UNA SEGUNDA Y UNA TERCERA INDUCTANCIAS EN SERIE (L2,L3) DEL MISMO ORDEN EN LA PRIMERA Y EN LA SEGUNDA DERIVACIONES INDUCTIVAS, RESPECTIVAMENTE, ESTANDO ACOPLADAS LAS INDUCTANCIAS A UN EXTREMO, A CADA LADO DE UN CAPACITOR (C) SITUADO EN LA DERIVACION EN SERIE CAPACITIVA, Y EN EL OTRO EXTREMO AL SEGUNDO Y TERCER CIRCUITOS RESONANTES DE RADIOFRECUENCIA (21,31), RESPECTIVAMENTE. DICHA PRIMERA INDUCTANCIA EN SERIE (L1) ES AL MENOS VARIAS SUPERIOR QUE CADA UNA DE LAS OTRAS DOS INDUCTANCIAS EN SERIE (L2,L3).
ES198888201464T 1987-07-13 1988-07-11 Circuito de entrada rf-tv. Expired - Lifetime ES2036254T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8701641A NL8701641A (nl) 1987-07-13 1987-07-13 Tv-hf ingangsschakeling.

Publications (1)

Publication Number Publication Date
ES2036254T3 true ES2036254T3 (es) 1993-05-16

Family

ID=19850297

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888201464T Expired - Lifetime ES2036254T3 (es) 1987-07-13 1988-07-11 Circuito de entrada rf-tv.

Country Status (7)

Country Link
US (1) US4851796A (es)
EP (1) EP0299578B1 (es)
JP (1) JP2732856B2 (es)
BR (1) BR8803482A (es)
DE (1) DE3875661T2 (es)
ES (1) ES2036254T3 (es)
NL (1) NL8701641A (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008186C2 (de) * 1990-03-15 1999-09-09 Thomson Brandt Gmbh Schaltungsanordnung zum Empfang von Hochfrequenzsignalen
EP0457932B1 (de) * 1990-05-21 1995-08-09 Siemens Aktiengesellschaft Schaltungsanordnung zur Bereichsumschaltung in Tunern
EP0457934B1 (de) * 1990-05-21 1995-09-13 Siemens Aktiengesellschaft Schaltungsanordnung zur Bereichsumschaltung in Tunern
GB2276785B (en) * 1993-03-31 1997-01-08 Marconi Gec Ltd Changeover means for R F source
JPH0879116A (ja) * 1994-09-09 1996-03-22 Toshiba Corp 利得切り替え回路及びこれを用いた無線装置
SG46174A1 (en) * 1996-01-10 1998-02-20 Philips Electronics Nv Tv/fm receiver for multi-media applications
JP3979669B2 (ja) * 1996-01-10 2007-09-19 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ マルチメディアアプリケーション用ｔｖ／ｆｍ受信機
JP2803723B2 (ja) * 1996-09-02 1998-09-24 日本電気株式会社 周波数変換型フィルタ
DE19819544A1 (de) * 1998-04-30 1999-11-11 Siemens Ag Schaltungsanordnung zur Bereichsumschaltung in Hochfrequenzempfängern
SG70642A1 (en) * 1998-06-10 2000-02-22 Koninkl Philips Electronics Nv Mixer oscillator stage
JP2000299438A (ja) * 1999-04-15 2000-10-24 Hitachi Ltd 半導体集積回路
DE10039191C1 (de) * 2000-08-10 2002-01-17 Infineon Technologies Ag Hochfrequenz-Eingangsstufe
US20030131127A1 (en) * 2002-01-05 2003-07-10 King Randy J. KVM video & OSD switch
WO2005114854A1 (en) * 2004-05-19 2005-12-01 Koninklijke Philips Electronics N.V. 3 band tv-rf input circuit
US7512391B2 (en) * 2005-05-24 2009-03-31 Freescale Semiconductor, Inc. Self-aligning resonator filter circuit and wideband tuner circuit incorporating same
JP4760701B2 (ja) 2006-12-26 2011-08-31 ソニー株式会社 フロントエンド集積回路
TWI470928B (zh) * 2009-09-02 2015-01-21 Mstar Semiconductor Inc 調諧器及其前級電路
JP6538628B2 (ja) * 2016-09-05 2019-07-03 株式会社東芝 フィルタ回路及びワイヤレス電力伝送システム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113157A (en) * 1936-01-31 1938-04-05 Rca Corp Coil system for multiple range radio receivers and the like
GB528403A (en) * 1939-05-05 1940-10-29 Siemens Brothers & Co Ltd Improvements in or relating to electrical filter circuits
US3593222A (en) * 1969-05-21 1971-07-13 Alpha Ind Inc Microwave series switch biasing circuit
DE2412689C3 (de) * 1974-03-16 1978-04-27 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Abstimmung und Bereichs- bzw. Bandumschaltung eines HF-Schwingungskreises
US4612571A (en) * 1984-12-07 1986-09-16 Zenith Electronics Corporation Constant Z bandswitched input filter
DE3538921A1 (de) * 1985-11-02 1987-05-14 Telefunken Electronic Gmbh Fernsehtuner

Also Published As

Publication number Publication date
NL8701641A (nl) 1989-02-01
JP2732856B2 (ja) 1998-03-30
JPS6439812A (en) 1989-02-10
BR8803482A (pt) 1989-01-31
EP0299578A1 (en) 1989-01-18
US4851796A (en) 1989-07-25
DE3875661D1 (de) 1992-12-10
EP0299578B1 (en) 1992-11-04
DE3875661T2 (de) 1993-05-27

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