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GB301326A - Improvements in or relating to radio transmitters - Google Patents

Improvements in or relating to radio transmitters

Info

Publication number
GB301326A
GB301326A GB34782/28A GB3478228A GB301326A GB 301326 A GB301326 A GB 301326A GB 34782/28 A GB34782/28 A GB 34782/28A GB 3478228 A GB3478228 A GB 3478228A GB 301326 A GB301326 A GB 301326A
Authority
GB
United Kingdom
Prior art keywords
alternating current
frequencies
supplied
secondary winding
opposite phases
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
GB34782/28A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie 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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB301326A publication Critical patent/GB301326A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

301,326. Telefunken Ges. fiir Drahtlose Telegraphie. Nov. 24, 1927, [Convention date]. Fading, preventing; thermionic amplifiers and generators.-A short-wave wireless transmitter transmits signals on two frequencies which are generated or amplified by thermionic valves E<1> E<2> energized by opposite phases of an alternating current to prevent one frequency influencing the other. Each valve produces one of the frequencies and the anodes are connected one to each end of the secondary winding of a transformer T, of which the primary winding is supplied with alternating current, and the cathodes are connected to the electrical centre of the secondary winding. Anode current is thus supplied to each valve by opposite phases of the alternating current.
GB34782/28A 1927-11-24 1928-11-26 Improvements in or relating to radio transmitters Expired GB301326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE301070T 1927-11-24

Publications (1)

Publication Number Publication Date
GB301326A true GB301326A (en) 1929-03-28

Family

ID=31894287

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32047/28A Expired GB301070A (en) 1927-11-24 1928-11-03
GB34782/28A Expired GB301326A (en) 1927-11-24 1928-11-26 Improvements in or relating to radio transmitters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB32047/28A Expired GB301070A (en) 1927-11-24 1928-11-03

Country Status (2)

Country Link
US (1) US1805918A (en)
GB (2) GB301070A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549423A (en) * 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2568408A (en) * 1947-05-17 1951-09-18 Rca Corp Frequency shift diversity transmission system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465925A (en) * 1944-05-18 1949-03-29 Rca Corp Radio control system
US2722606A (en) * 1946-08-02 1955-11-01 Ollie J Allen Audio frequency pulse generator
US2767258A (en) * 1952-10-10 1956-10-16 North American Aviation Inc Voltage doubling demodulator
US3806925A (en) * 1961-01-26 1974-04-23 Us Navy Countermeasures system
US5303259A (en) * 1991-11-07 1994-04-12 Loveall Peter S Frequency-hopped electronic signal transmitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549423A (en) * 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2568408A (en) * 1947-05-17 1951-09-18 Rca Corp Frequency shift diversity transmission system

Also Published As

Publication number Publication date
US1805918A (en) 1931-05-19
GB301070A (en) 1929-07-11

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