GB503907A - - Google Patents

Info

Publication number
GB503907A
GB503907A GB34117/38A GB3411738A GB503907A GB 503907 A GB503907 A GB 503907A GB 34117/38 A GB34117/38 A GB 34117/38A GB 3411738 A GB3411738 A GB 3411738A GB 503907 A GB503907 A GB 503907A
Authority
GB
United Kingdom
Prior art keywords
frequency
varied
receiver
circuits
curve
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
GB34117/38A
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.)
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Original Assignee
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
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 Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH filed Critical Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Publication of GB503907A publication Critical patent/GB503907A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
GB34117/38A 1938-01-04 1938-11-23 Expired GB503907A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES130252D DE723384C (de) 1938-01-04 1938-01-04 Empfaenger fuer frequenzmodulierte Wellen

Publications (1)

Publication Number Publication Date
GB503907A true GB503907A (de) 1939-04-17

Family

ID=7988379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34117/38A Expired GB503907A (de) 1938-01-04 1938-11-23

Country Status (4)

Country Link
US (1) US2170202A (de)
DE (1) DE723384C (de)
FR (1) FR848415A (de)
GB (1) GB503907A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540643A (en) * 1940-01-12 1951-02-06 Edwin H Armstrong Frequency-modulated carrier signal receiver
US2488612A (en) * 1940-03-09 1949-11-22 Rca Corp Frequency modulation reception
US2812510A (en) * 1952-06-25 1957-11-05 Elmer H Schulz Frequency modulation system
US2939951A (en) * 1957-11-04 1960-06-07 Paul L Schaffer Conversion of amplitude to phase modulation by means of crystal to reduce noise

Also Published As

Publication number Publication date
DE723384C (de) 1942-08-04
FR848415A (fr) 1939-10-30
US2170202A (en) 1939-08-22

Similar Documents

Publication Publication Date Title
GB633680A (en) Wave-signal tuning system
GB503907A (de)
GB574407A (en) Improvements in or relating to antenna input circuits for radio receivers
GB593361A (en) Improvements in or relating to super-generative receivers
GB613099A (en) Improvements in or relating to input circuits for radio receivers
GB617647A (en) Improvements in or relating to frequency-changing circuits
GB571314A (en) Frequency modulation detector and converter
GB611626A (en) Improvements in radio-telegraphy
GB580297A (en) Improvements in or relating to variable permeability tuning circuits
US2662939A (en) High selectivity amplifier
GB608131A (en) Super-regenerative receiver
US2617926A (en) Interference reducing radio receiving system
GB648259A (en) Improvements relating to frequency converter circuits for multi-band superheterodynereceivers
SU77468A3 (ru) Приемник ультравысоких частот
US2370720A (en) Magnetic frequency converter
GB612585A (en) Improvements in receivers for angle-modulated carrier waves
GB557083A (en) Improvements in and relating to means for reducing noise in radio receivers
GB458147A (en) Elimination of radiation in the case of superhet receivers
GB1042655A (en) Oscillator circuit
GB642344A (en) Improvements in or relating to radio receiving apparatus
GB419795A (en) Superheterodyne radio receiver and the like
GB616573A (en) Improvements in or relating to radio-receivers
GB1008540A (en) Improvements in or relating to mixing circuit arrangements for high-frequency signals
GB470372A (en) Improvements in or relating to radio and like receivers
GB567813A (en) Improvements in and relating to frequency-modulated receivers