GB199192A - Improvements in and relating to radio transmitting systems - Google Patents

Improvements in and relating to radio transmitting systems

Info

Publication number
GB199192A
GB199192A GB1070422A GB1070422A GB199192A GB 199192 A GB199192 A GB 199192A GB 1070422 A GB1070422 A GB 1070422A GB 1070422 A GB1070422 A GB 1070422A GB 199192 A GB199192 A GB 199192A
Authority
GB
United Kingdom
Prior art keywords
aerials
transformer
aerial
amplifier
series
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
GB1070422A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1070422A priority Critical patent/GB199192A/en
Publication of GB199192A publication Critical patent/GB199192A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure

Landscapes

  • Transmitters (AREA)

Abstract

199,192. British Thomson-Houston Co., Ltd., and Alexanderson, E. F. W. April 13, 1922. Addition to 178,992. Multiplex signalling; magnetic modulating systems; aerials.-Relates to improvements in the wireless signalling system claimed in the parent Specification, and comprises means for eliminating the detuning effect caused by the mutual capacity between two aerials. Two aerials 1, 2 are supplied at different frequencies by highfrequency current sources 3, 4, the energy to be radiated being controlled by the magnetic amplifiers 8, 9. The primary of an adjustable transformer 12 is connected in series with the aerial 2, and the secondary in series with the amplifier 8, the transformer being adjusted to impress upon the circuit of the amplifier 8 a voltage equal and opposite to that caused by the current produced in the aerial 1 by reason of the mutual capacity. Instead of the inductance 7, the tuning coils 5, 6 may be magnetically coupled. In a modification, the electrostatic coupling between the aerials is completely neutralized by the provision of a variable coupling transformer. Specification 130,064 is referred to.
GB1070422A 1922-04-13 1922-04-13 Improvements in and relating to radio transmitting systems Expired GB199192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1070422A GB199192A (en) 1922-04-13 1922-04-13 Improvements in and relating to radio transmitting systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1070422A GB199192A (en) 1922-04-13 1922-04-13 Improvements in and relating to radio transmitting systems

Publications (1)

Publication Number Publication Date
GB199192A true GB199192A (en) 1923-06-21

Family

ID=9972740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1070422A Expired GB199192A (en) 1922-04-13 1922-04-13 Improvements in and relating to radio transmitting systems

Country Status (1)

Country Link
GB (1) GB199192A (en)

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