GB1478896A - Frequency modulated oscillators - Google Patents

Frequency modulated oscillators

Info

Publication number
GB1478896A
GB1478896A GB28208/74A GB2820874A GB1478896A GB 1478896 A GB1478896 A GB 1478896A GB 28208/74 A GB28208/74 A GB 28208/74A GB 2820874 A GB2820874 A GB 2820874A GB 1478896 A GB1478896 A GB 1478896A
Authority
GB
United Kingdom
Prior art keywords
frequency
capacitance
circuit
oscillator
modulator
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
Application number
GB28208/74A
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB1478896A publication Critical patent/GB1478896A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/12—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices
    • H03B9/14—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices and elements comprising distributed inductance and capacitance
    • H03B9/141—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices and elements comprising distributed inductance and capacitance and comprising a voltage sensitive element, e.g. varactor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
    • H03C7/027—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices using diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/007—Generation of oscillations based on harmonic frequencies, e.g. overtone oscillators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0079—Measures to linearise modulation or reduce distortion of modulation characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
GB28208/74A 1973-06-25 1974-06-25 Frequency modulated oscillators Expired GB1478896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7308906A SE369134B (enExample) 1973-06-25 1973-06-25

Publications (1)

Publication Number Publication Date
GB1478896A true GB1478896A (en) 1977-07-06

Family

ID=20317877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28208/74A Expired GB1478896A (en) 1973-06-25 1974-06-25 Frequency modulated oscillators

Country Status (7)

Country Link
JP (1) JPS5038448A (enExample)
CA (1) CA987750A (enExample)
FR (1) FR2234694B1 (enExample)
GB (1) GB1478896A (enExample)
IT (1) IT1015324B (enExample)
NO (1) NO132258C (enExample)
SE (1) SE369134B (enExample)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510800A (en) * 1967-07-24 1970-05-05 Hitachi Ltd Negative resistance oscillator stabilized with fundamental and harmonic frequency cavity resonators
JPS4931823A (enExample) * 1972-08-02 1974-03-22

Also Published As

Publication number Publication date
SE369134B (enExample) 1974-08-05
DE2430431A1 (de) 1975-01-09
NO132258B (enExample) 1975-06-30
DE2430431B2 (de) 1975-09-04
NO742305L (enExample) 1975-01-20
IT1015324B (it) 1977-05-10
NO132258C (enExample) 1975-10-08
CA987750A (en) 1976-04-20
FR2234694B1 (enExample) 1978-03-31
FR2234694A1 (enExample) 1975-01-17
JPS5038448A (enExample) 1975-04-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee