KR100243838B1 - 텔레비젼튜너의입력회로 - Google Patents

텔레비젼튜너의입력회로 Download PDF

Info

Publication number
KR100243838B1
KR100243838B1 KR1019970013895A KR19970013895A KR100243838B1 KR 100243838 B1 KR100243838 B1 KR 100243838B1 KR 1019970013895 A KR1019970013895 A KR 1019970013895A KR 19970013895 A KR19970013895 A KR 19970013895A KR 100243838 B1 KR100243838 B1 KR 100243838B1
Authority
KR
South Korea
Prior art keywords
frequency
capacitor
circuit
varactor
image
Prior art date
Application number
KR1019970013895A
Other languages
English (en)
Korean (ko)
Other versions
KR970073038A (ko
Inventor
쯔또무 구니시마
Original Assignee
가타오카 마사타카
알프스 덴키 가부시키가이샤
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 가타오카 마사타카, 알프스 덴키 가부시키가이샤 filed Critical 가타오카 마사타카
Publication of KR970073038A publication Critical patent/KR970073038A/ko
Application granted granted Critical
Publication of KR100243838B1 publication Critical patent/KR100243838B1/ko

Links

Images

Classifications

    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/175—Series LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Noise Elimination (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
KR1019970013895A 1996-04-17 1997-04-16 텔레비젼튜너의입력회로 KR100243838B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8-095487 1996-04-17
JP8095487A JPH09284157A (ja) 1996-04-17 1996-04-17 テレビジョンチューナの入力回路

Publications (2)

Publication Number Publication Date
KR970073038A KR970073038A (ko) 1997-11-07
KR100243838B1 true KR100243838B1 (ko) 2000-02-01

Family

ID=14138970

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970013895A KR100243838B1 (ko) 1996-04-17 1997-04-16 텔레비젼튜너의입력회로

Country Status (6)

Country Link
JP (1) JPH09284157A (de)
KR (1) KR100243838B1 (de)
CN (1) CN1164795A (de)
DE (1) DE19715956C2 (de)
GB (1) GB2312345A (de)
MX (1) MX9702782A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3592160B2 (ja) 1999-11-25 2004-11-24 アルプス電気株式会社 チューナの複同調回路
JP4961520B2 (ja) * 2002-02-01 2012-06-27 キャラハン セルラー エルエルシー テレビ・チューナ及びその中で用いられるプリント基板
JP3675438B2 (ja) * 2002-10-31 2005-07-27 松下電器産業株式会社 高周波受信装置
JP3096170U (ja) * 2003-02-27 2003-09-05 アルプス電気株式会社 テレビジョンチューナの入力回路
JP3097064U (ja) * 2003-04-09 2004-01-15 アルプス電気株式会社 入力同調回路
DE10330449B3 (de) * 2003-07-05 2005-02-24 Daimlerchrysler Ag Nockenwellenversteller
JP2008544600A (ja) 2005-06-09 2008-12-04 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 同調可能な回路構成とそのような回路構成を提供する方法
CN101179677B (zh) * 2006-11-08 2011-12-14 奇景光电股份有限公司 电视调谐器与其制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6352510A (ja) * 1986-08-22 1988-03-05 Toshiba Corp 電子同調チユ−ナ
US4835608A (en) * 1988-05-31 1989-05-30 Zenith Electronics Corporation Image trap filter circuit
JPH0352323A (ja) * 1989-07-19 1991-03-06 Matsushita Electric Ind Co Ltd 電子チューナ
US5054117A (en) * 1989-08-01 1991-10-01 Zenith Electronics Corporation Tunable UHF filter for switchable VHF/UHF receiver
JP3053150B2 (ja) * 1993-02-26 2000-06-19 アルプス電気株式会社 Ｔｖチューナの入力同調回路

Also Published As

Publication number Publication date
DE19715956A1 (de) 1997-11-06
KR970073038A (ko) 1997-11-07
GB9707390D0 (en) 1997-05-28
JPH09284157A (ja) 1997-10-31
DE19715956C2 (de) 2003-08-14
MX9702782A (es) 1998-04-30
CN1164795A (zh) 1997-11-12
GB2312345A (en) 1997-10-22

Similar Documents

Publication Publication Date Title
US4247953A (en) Tunable high-frequency input circuit
KR19990007997A (ko) 동조 가능한 인터스테이지 필터
US6064866A (en) Switchable bandpass filter for a multiband tuner
US20050118968A1 (en) Double conversion tuner
US5376907A (en) High-frequency tunable filter
KR100243838B1 (ko) 텔레비젼튜너의입력회로
US7106149B2 (en) Switchable tuneable bandpass filter with optimized frequency response
JP2755631B2 (ja) 帯域フィルタ回路配置
US7609134B2 (en) Variable tuning circuit using variable capacitance diode and television tuner
US4628540A (en) Tuning arrangement having a substantially constant frequency difference between an RF-circuit and an oscillator circuit
KR100286474B1 (ko) 안테나동조회로
MXPA97002782A (en) Entry circuit for a televis tuner
US6734761B2 (en) Radio-frequency input stage
US4646360A (en) Constant bandwidth RF filter with improved low frequency attenuation
US4596044A (en) UHF-VHF combination tuner
KR930006547Y1 (ko) 위성방송튜너의 광대역 가변중간주파 필터회로
JP3146916B2 (ja) 電子チューナの入力回路
EP0920735B1 (de) Empfänger mit abstimmbarem parallelresonanzkreis
KR100406353B1 (ko) 텔레비전 튜너의 입력동조 스위칭회로
JP3103017U (ja) テレビジョンチューナ
JPS607853B2 (ja) 入力同調回路
JP3050884B2 (ja) 電子チューナの入力回路
KR0168954B1 (ko) 위성방송튜너의 동조필터회로
JP3127711B2 (ja) 電子チューナ
WO2001084709A1 (en) Bandswitichable double tuned circuit

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20061031

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee