IT1034520B - Circuito a risonanza utilizzante oiodi a capacita variabile - Google Patents

Circuito a risonanza utilizzante oiodi a capacita variabile

Info

Publication number
IT1034520B
IT1034520B IT21631/75A IT2163175A IT1034520B IT 1034520 B IT1034520 B IT 1034520B IT 21631/75 A IT21631/75 A IT 21631/75A IT 2163175 A IT2163175 A IT 2163175A IT 1034520 B IT1034520 B IT 1034520B
Authority
IT
Italy
Prior art keywords
oiodi
resonance circuit
variable capacity
variable
capacity
Prior art date
Application number
IT21631/75A
Other languages
English (en)
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of IT1034520B publication Critical patent/IT1034520B/it

Links

Classifications

    • 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
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
    • H01L29/92—Capacitors having potential barriers
    • H01L29/93—Variable capacitance diodes, e.g. varactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Semiconductor Integrated Circuits (AREA)
IT21631/75A 1974-03-25 1975-03-24 Circuito a risonanza utilizzante oiodi a capacita variabile IT1034520B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3322474A JPS5516461B2 (it) 1974-03-25 1974-03-25

Publications (1)

Publication Number Publication Date
IT1034520B true IT1034520B (it) 1979-10-10

Family

ID=12380467

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21631/75A IT1034520B (it) 1974-03-25 1975-03-24 Circuito a risonanza utilizzante oiodi a capacita variabile

Country Status (8)

Country Link
US (1) US4003009A (it)
JP (1) JPS5516461B2 (it)
CA (1) CA1055624A (it)
DE (1) DE2512870A1 (it)
FR (1) FR2275069A1 (it)
GB (1) GB1504592A (it)
IT (1) IT1034520B (it)
NL (1) NL7503512A (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5869339U (ja) * 1981-10-29 1983-05-11 三洋電機株式会社 警報信号発生回路
US4903086A (en) * 1988-01-19 1990-02-20 E-Systems, Inc. Varactor tuning diode with inversion layer
US4987459A (en) * 1989-01-19 1991-01-22 Toko, Inc. Variable capacitance diode element having wide capacitance variation range
FI914763A0 (fi) * 1991-10-09 1991-10-09 Nokia Mobile Phones Ltd Kompensering av en spaenningsstyrd olineaer komponent i en radiotelefon.
US5914513A (en) * 1997-06-23 1999-06-22 The Board Of Trustees Of The University Of Illinois Electronically tunable capacitor
US6278871B1 (en) * 1998-12-29 2001-08-21 U.S. Philips Corporation Integrated circuit including a low-dispersion capacitive network
US7235862B2 (en) 2001-07-10 2007-06-26 National Semiconductor Corporation Gate-enhanced junction varactor
US7081663B2 (en) * 2002-01-18 2006-07-25 National Semiconductor Corporation Gate-enhanced junction varactor with gradual capacitance variation
KR100450824B1 (ko) * 2002-11-06 2004-10-01 삼성전자주식회사 고주파용 가변 캐패시터 구조 및 그 제조방법
US20090135306A1 (en) * 2005-03-29 2009-05-28 Nxp B.V. Receiver having a tuning capacitance

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1591121A1 (de) * 1966-03-07 1970-05-14 Fujitsu Ltd Frequenzmodulator
US3579278A (en) * 1967-10-12 1971-05-18 Varian Associates Surface barrier diode having a hypersensitive {72 {30 {0 region forming a hypersensitive voltage variable capacitor
US3535600A (en) * 1968-10-10 1970-10-20 Gen Electric Mos varactor diode
JPS4934262A (it) * 1972-07-28 1974-03-29
US3808472A (en) * 1972-12-29 1974-04-30 Gen Electric Variable capacitance semiconductor devices
US3825858A (en) * 1973-02-23 1974-07-23 Hitachi Ltd Local oscillator for use in a vhf tuner for a television receiver

Also Published As

Publication number Publication date
GB1504592A (en) 1978-03-22
JPS50126386A (it) 1975-10-04
US4003009A (en) 1977-01-11
CA1055624A (en) 1979-05-29
FR2275069A1 (fr) 1976-01-09
JPS5516461B2 (it) 1980-05-02
DE2512870A1 (de) 1975-10-09
NL7503512A (nl) 1975-09-29
FR2275069B1 (it) 1978-12-08

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