GB515940A - Frequency modulation system - Google Patents

Frequency modulation system

Info

Publication number
GB515940A
GB515940A GB17323/38A GB1732338A GB515940A GB 515940 A GB515940 A GB 515940A GB 17323/38 A GB17323/38 A GB 17323/38A GB 1732338 A GB1732338 A GB 1732338A GB 515940 A GB515940 A GB 515940A
Authority
GB
United Kingdom
Prior art keywords
frequency
oscillator
modulation
valves
reactance
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
GB17323/38A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB515940A publication Critical patent/GB515940A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
GB17323/38A 1937-07-09 1938-06-10 Frequency modulation system Expired GB515940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US515940XA 1937-07-09 1937-07-09

Publications (1)

Publication Number Publication Date
GB515940A true GB515940A (en) 1939-12-19

Family

ID=21972249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17323/38A Expired GB515940A (en) 1937-07-09 1938-06-10 Frequency modulation system

Country Status (4)

Country Link
BE (1) BE428896A (enrdf_load_stackoverflow)
FR (1) FR840443A (enrdf_load_stackoverflow)
GB (1) GB515940A (enrdf_load_stackoverflow)
NL (1) NL57985C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976238C (de) * 1953-05-28 1963-05-16 Telefunken Patent Schaltung eines rueckgekoppelten Roehrengenerators zur Frequenzmodulation mit grossem Frequenzhub

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218524A (en) * 1940-02-20 1940-10-22 Bell Telephone Labor Inc Frequency modulation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976238C (de) * 1953-05-28 1963-05-16 Telefunken Patent Schaltung eines rueckgekoppelten Roehrengenerators zur Frequenzmodulation mit grossem Frequenzhub

Also Published As

Publication number Publication date
BE428896A (enrdf_load_stackoverflow)
FR840443A (fr) 1939-04-25
NL57985C (enrdf_load_stackoverflow)

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