GB970891A - Improvements in or relating to frequency modulation apparatus - Google Patents

Improvements in or relating to frequency modulation apparatus

Info

Publication number
GB970891A
GB970891A GB9511/62A GB951162A GB970891A GB 970891 A GB970891 A GB 970891A GB 9511/62 A GB9511/62 A GB 9511/62A GB 951162 A GB951162 A GB 951162A GB 970891 A GB970891 A GB 970891A
Authority
GB
United Kingdom
Prior art keywords
frequency
line section
amplifier
march
mixer
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
GB9511/62A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB970891A publication Critical patent/GB970891A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F7/00—Parametric amplifiers
    • H03F7/04—Parametric amplifiers using variable-capacitance element; using variable-permittivity element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • 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
    • H03F—AMPLIFIERS
    • H03F7/00—Parametric amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB9511/62A 1961-03-17 1962-03-13 Improvements in or relating to frequency modulation apparatus Expired GB970891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US96491A US3183456A (en) 1961-03-17 1961-03-17 Frequency modulation apparatus

Publications (1)

Publication Number Publication Date
GB970891A true GB970891A (en) 1964-09-23

Family

ID=22257582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9511/62A Expired GB970891A (en) 1961-03-17 1962-03-13 Improvements in or relating to frequency modulation apparatus

Country Status (5)

Country Link
US (1) US3183456A (enEXAMPLES)
BE (1) BE615032A (enEXAMPLES)
DE (1) DE1218556B (enEXAMPLES)
GB (1) GB970891A (enEXAMPLES)
NL (1) NL275870A (enEXAMPLES)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335373A (en) * 1964-07-20 1967-08-08 Gen Telephone & Elect Apparatus for modulating guided electromagnetic waves
US3422355A (en) * 1965-04-22 1969-01-14 Sylvania Electric Prod Parametric frequency converter for transmitting antenna
US3443247A (en) * 1966-03-31 1969-05-06 Sylvania Electric Prod Varactor modulator having a linear tuning voltage vs. frequency response

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE473522A (enEXAMPLES) * 1946-05-28
NL224219A (enEXAMPLES) * 1957-01-26
US3018443A (en) * 1958-05-20 1962-01-23 Rca Corp Parameric amplifier with lower frequency pumping
US2992398A (en) * 1959-01-15 1961-07-11 Rca Corp Parametric oscillator phase switching means
US3001143A (en) * 1959-02-04 1961-09-19 Avco Mfg Corp Low noise radio frequency amplifier
US2970275A (en) * 1959-05-05 1961-01-31 Rca Corp Parametric amplifier device

Also Published As

Publication number Publication date
NL275870A (enEXAMPLES)
DE1218556B (de) 1966-06-08
US3183456A (en) 1965-05-11
BE615032A (fr) 1962-07-02

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