DE3681842D1 - Schaltung zur bandumschaltung eines spannungsgesteuerten oszillators. - Google Patents

Schaltung zur bandumschaltung eines spannungsgesteuerten oszillators.

Info

Publication number
DE3681842D1
DE3681842D1 DE8686104936T DE3681842T DE3681842D1 DE 3681842 D1 DE3681842 D1 DE 3681842D1 DE 8686104936 T DE8686104936 T DE 8686104936T DE 3681842 T DE3681842 T DE 3681842T DE 3681842 D1 DE3681842 D1 DE 3681842D1
Authority
DE
Germany
Prior art keywords
tape
switching
circuit
controlled oscillator
voltage controlled
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
DE8686104936T
Other languages
English (en)
Inventor
Stephen Robert Wynn
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.)
Ericsson Inc
Original Assignee
Ericsson GE Mobile Communications Inc
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 Ericsson GE Mobile Communications Inc filed Critical Ericsson GE Mobile Communications Inc
Application granted granted Critical
Publication of DE3681842D1 publication Critical patent/DE3681842D1/de
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
    • H03J5/246—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 using electronic means
DE8686104936T 1985-04-19 1986-04-10 Schaltung zur bandumschaltung eines spannungsgesteuerten oszillators. Expired - Lifetime DE3681842D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/724,977 US4602222A (en) 1985-04-19 1985-04-19 Circuit for bandswitching a voltage controlled oscillator

Publications (1)

Publication Number Publication Date
DE3681842D1 true DE3681842D1 (de) 1991-11-14

Family

ID=24912633

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686104936T Expired - Lifetime DE3681842D1 (de) 1985-04-19 1986-04-10 Schaltung zur bandumschaltung eines spannungsgesteuerten oszillators.

Country Status (5)

Country Link
US (1) US4602222A (de)
EP (1) EP0209640B1 (de)
JP (1) JPH0763152B2 (de)
DE (1) DE3681842D1 (de)
DK (1) DK167722B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386499B (de) * 1986-07-29 1988-08-25 Philips Nv Rundfunkempfaenger
US5418503A (en) * 1993-03-08 1995-05-23 Ericsson Ge Mobile Communications Inc. Compensation of transient frequency drift in oscillator circuits
KR0153379B1 (ko) * 1995-09-26 1998-11-16 김광호 디지탈 무선통신시스템의 업/다운컨버터용 전압제어발진기
US6013958A (en) * 1998-07-23 2000-01-11 Lucent Technologies Inc. Integrated circuit with variable capacitor
KR20020066473A (ko) * 2001-02-12 2002-08-19 삼성전자 주식회사 전압제어발진기의 발진 주파수대역 전환을 위한 전압제어가변동조회로
US6724265B2 (en) 2002-06-14 2004-04-20 Rf Micro Devices, Inc. Compensation for oscillator tuning gain variations in frequency synthesizers
US20040246039A1 (en) * 2003-06-03 2004-12-09 Chi-Ming Hsiao Switched capacitor circuit capable of minimizing clock feedthrough effect in a voltage controlled oscillator circuit
US7015742B2 (en) * 2003-06-20 2006-03-21 Media Tek Inc. Switched capacitor circuit capable of eliminating clock feedthrough by complementary control signals for digital tuning VCO
FR2871628B1 (fr) * 2004-06-10 2006-08-11 Commissariat Energie Atomique Oscillateur controle en tension
US7479839B1 (en) * 2008-03-31 2009-01-20 International Business Machines Corporation Varactor bank switching based on negative control voltage generation
US7498894B1 (en) 2008-09-04 2009-03-03 International Business Machines Corporation Varactor system having real or apparent low capacitance density

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051015A (de) *
US2137318A (en) * 1931-05-28 1938-11-22 Hazeltine Corp Multiband tunable system
GB933934A (en) * 1960-12-08 1963-08-14 Marconi Wireless Telegraph Co Improvements in or relating to frequency varying circuit arrangements
GB1216308A (en) * 1967-06-02 1970-12-16 Plessey Co Ltd Improvements in or relating to tuned circuit arrangements
JPS4934262A (de) * 1972-07-28 1974-03-29
DE2257574B1 (de) * 1972-11-24 1974-05-22 Philips Patentverwaltung Gmbh, 2000 Hamburg
US3825858A (en) * 1973-02-23 1974-07-23 Hitachi Ltd Local oscillator for use in a vhf tuner for a television receiver
DE2412689C3 (de) * 1974-03-16 1978-04-27 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur Abstimmung und Bereichs- bzw. Bandumschaltung eines HF-Schwingungskreises
DE2828838C2 (de) * 1977-07-01 1983-10-20 Hitachi, Ltd., Tokyo HF-Eingangsschaltung für Fernsehempfänger
JPS5724107A (en) * 1980-07-19 1982-02-08 Matsushita Electric Ind Co Ltd Oscillation circuit
US4363135A (en) * 1980-10-27 1982-12-07 Zenith Radio Corporation Four band VHF varactor tuner
US4339827A (en) * 1980-11-25 1982-07-13 Rca Corporation Automatic tuning circuit arrangement with switched impedances
JPS58212211A (ja) * 1982-06-04 1983-12-09 Citizen Watch Co Ltd 電子チユ−ナ

Also Published As

Publication number Publication date
EP0209640B1 (de) 1991-10-09
JPS61244133A (ja) 1986-10-30
EP0209640A3 (en) 1988-03-02
DK180786D0 (da) 1986-04-18
JPH0763152B2 (ja) 1995-07-05
DK180786A (da) 1986-10-20
US4602222A (en) 1986-07-22
DK167722B1 (da) 1993-12-06
EP0209640A2 (de) 1987-01-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee