ES2140370T3 - Circuito de entrada de señal rf de uhf. - Google Patents

Circuito de entrada de señal rf de uhf.

Info

Publication number
ES2140370T3
ES2140370T3 ES89302935T ES89302935T ES2140370T3 ES 2140370 T3 ES2140370 T3 ES 2140370T3 ES 89302935 T ES89302935 T ES 89302935T ES 89302935 T ES89302935 T ES 89302935T ES 2140370 T3 ES2140370 T3 ES 2140370T3
Authority
ES
Spain
Prior art keywords
uhf
varactor diode
condenser
signal input
serial
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
ES89302935T
Other languages
English (en)
Inventor
Alexander Wayne Hietala
Max Ward Muterspaugh
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 Licensing Corp
Original Assignee
RCA Licensing 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 Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of ES2140370T3 publication Critical patent/ES2140370T3/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
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes

Landscapes

  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Manipulation Of Pulses (AREA)
  • Structure Of Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

UN CIRCUITO DE ENTRADA DE SEÑAL RF PARA UN SINTONIZADOR DE UHF DE UN RECEOPTOR DE TELEVISION COMPRENDE UN CIRCUITO SINTONIZADO SERIE (10) QUE INCLUYE UN DIODO VARACTOR (14) Y UN ELEMENTO DE INDUCTANCIA (13B) CONECTADO EN SERIE, EN EL ORDEN NOMINADO, ENTRE LA SEÑAL TIERRA Y EL ELECTRODO PUERTA (G1) DEL AMPLIFICADOR RF DE TRANSSITRO DE EFECTO DE CAMPO (21). EL CIRCUITO DE SINTONIZADO SERIE TEIEN UN ANCHO DE BANDA RELATIVAMENTE UNIFORME A TRAVES DEL RANGO DEL UHF. UN CONDENSADOR (18) CONECTADO EN CONJUNCION CON EL ELECTRODO PUERTA (G1) COMPLETA UNA CONFIGURACION "CONDENSADOR-PARTIDO" EN EL QUE EL DIODO VARACTOR (14) Y EL CONDESADOR (18) FORMAN UNA RED DE TRANSFORMACION DE IMPEDANCIA VARIABLE PARA HECER QUE LA RELACION ENTRE LAS IMPEDANCIAS EFECTIVAS DE LOS CIRCUITOS SINTONIZADOS SERIE Y EL AMPLIFICADOR FET SEA RELATIVAMENTE UNIFORME A TRAVES DEL RANGO DE LA UHF. LA ORDEN DEL DIODO VARACTOR (14) Y EL ELEMENTO DE INDUCTANCIA (13B) PERMITE UN BAJO COSTE DE AJUSTE DEL CONDENSADOR (129A) QUE COMPRENDE UNA PARED DE BLINDAJE ENTERRADA (203) COMO UNA PLACA Y UNA TAPA MOVIL (309) COMO SEGUNDA PLACA PARA SER CONECTADA DIRECTAMENTE A TRAVES DEL DIODO VARACTOR (14).
ES89302935T 1988-03-31 1989-03-23 Circuito de entrada de señal rf de uhf. Expired - Lifetime ES2140370T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/175,832 US4921465A (en) 1988-03-31 1988-03-31 Varactor tuned UHF RF signal input circuit

Publications (1)

Publication Number Publication Date
ES2140370T3 true ES2140370T3 (es) 2000-03-01

Family

ID=22641822

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89302935T Expired - Lifetime ES2140370T3 (es) 1988-03-31 1989-03-23 Circuito de entrada de señal rf de uhf.

Country Status (8)

Country Link
US (1) US4921465A (es)
EP (1) EP0336614B1 (es)
JP (1) JP2525242B2 (es)
KR (1) KR0131325B1 (es)
CA (1) CA1293829C (es)
DE (1) DE68929130T2 (es)
ES (1) ES2140370T3 (es)
SG (1) SG66234A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136719A (en) * 1988-12-05 1992-08-04 Seiko Corp. Automatic antenna tubing method and apparatus
CN1066885C (zh) * 1995-01-04 2001-06-06 船井电机株式会社 包括射频转换器、调谐器和中频放大器的电路器件
US6009318A (en) * 1997-07-23 1999-12-28 Ericsson Inc. Electronically adjustable balanced-to-unbalanced converters (balun)
FR2781949B1 (fr) * 1998-08-03 2000-10-27 St Microelectronics Sa Dispositif de commutation de signaux radio-frequences
US6268774B1 (en) 1999-11-05 2001-07-31 Intel Corporation Self-tuning amplifier
JP4747409B2 (ja) * 2000-11-09 2011-08-17 ソニー株式会社 受信装置
JP2002171185A (ja) * 2000-11-29 2002-06-14 Alps Electric Co Ltd テレビジョンチューナ
GB2408643A (en) * 2003-11-27 2005-06-01 Zarlink Semiconductor Ltd Double conversion tuner with tuneable bandpass filters
JP3103621U (ja) * 2004-02-26 2004-08-19 アルプス電気株式会社 テレビジョンチューナ
US10298182B1 (en) * 2017-12-19 2019-05-21 National Chung Shan Institute Of Science And Technology Radio frequency amplifier and integrated circuit using the radio frequency amplifier
KR102422644B1 (ko) 2020-07-22 2022-07-18 윤임식 그네의 지지 프레임 체결유닛

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890034A (en) * 1928-06-12 1932-12-06 Wired Radio Inc Electrical coupling system
US1984408A (en) * 1932-05-19 1934-12-18 Pagenhart Res Corp Radio receiving system
US4048598A (en) * 1976-05-28 1977-09-13 Rca Corporation Uhf tuning circuit utilizing a varactor diode
US4048597A (en) * 1976-06-28 1977-09-13 Rca Corporation Planar printed circuit board arrangement useful in the uhf portion of a television tuner
JPS5313330A (en) * 1976-07-22 1978-02-06 Sony Corp Broad band resonance circuit
US4145659A (en) * 1977-05-25 1979-03-20 General Electric Company UHF electronic tuner
JPS54103601A (en) * 1978-02-01 1979-08-15 Sony Corp Uhf electronic tuner
GB2035708B (en) * 1978-10-06 1982-12-15 Hitachi Ltd Tunable resonant circuits for uhf tuners in televison receivers
JPS566151U (es) * 1979-06-22 1981-01-20
JPS5677130U (es) * 1979-11-14 1981-06-23
DE3110084A1 (de) * 1981-03-16 1982-09-30 Philips Patentverwaltung Gmbh, 2000 Hamburg "trimmerkondensator"
JPS60127814A (ja) * 1983-12-15 1985-07-08 Matsushita Electric Ind Co Ltd Ｕｈｆチユ−ナ
US4851798A (en) * 1988-03-31 1989-07-25 Rca Licensing Corporation Unitary tuning structure

Also Published As

Publication number Publication date
EP0336614A3 (en) 1990-08-22
DE68929130D1 (de) 2000-02-10
KR0131325B1 (ko) 1998-10-01
SG66234A1 (en) 1999-07-20
EP0336614B1 (en) 2000-01-05
JP2525242B2 (ja) 1996-08-14
DE68929130T2 (de) 2000-05-31
EP0336614A2 (en) 1989-10-11
JPH01290317A (ja) 1989-11-22
CA1293829C (en) 1991-12-31
US4921465A (en) 1990-05-01
KR890015503A (ko) 1989-10-30

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