GB542005A - Improvements in radio transmission systems - Google Patents

Improvements in radio transmission systems

Info

Publication number
GB542005A
GB542005A GB10455/40A GB1045540A GB542005A GB 542005 A GB542005 A GB 542005A GB 10455/40 A GB10455/40 A GB 10455/40A GB 1045540 A GB1045540 A GB 1045540A GB 542005 A GB542005 A GB 542005A
Authority
GB
United Kingdom
Prior art keywords
signal
june
aerials
radio transmission
transmission systems
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
GB10455/40A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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
Priority claimed from US279656A external-priority patent/US2273911A/en
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB542005A publication Critical patent/GB542005A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/008—Polarisation modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

542,005. Wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 17, 1940, No. 10455. Convention date, June 17, 1939. [Class 40 (v)] Two carrier waves of the same frequency and phase but polarized in different directions are differentially modulated by the signal to produce a resultant wave the polarization of which varies with the signal. As shown, the carrier source 10 is connected through amplifiers 20, 22 to the respective aerials 36, 38 which may be di-poles set up at right angles. Modulation from a signal source 40 is applied in push-pull to the grids of the valves 20, 22. At the receiving end, the aerials are similarly arranged and are connected respectively to detectors which feed the audio circuits jointly.
GB10455/40A 1939-06-17 1940-06-17 Improvements in radio transmission systems Expired GB542005A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US279656A US2273911A (en) 1939-06-17 1939-06-17 System of radio communication by means of polarization modulation
US397700A US2357439A (en) 1939-06-17 1941-06-12 Radio communication by means of polarization modulation

Publications (1)

Publication Number Publication Date
GB542005A true GB542005A (en) 1941-12-22

Family

ID=26959811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10455/40A Expired GB542005A (en) 1939-06-17 1940-06-17 Improvements in radio transmission systems

Country Status (2)

Country Link
US (1) US2357439A (en)
GB (1) GB542005A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476337A (en) * 1943-01-22 1949-07-19 Sperry Corp Secret radio communication
US2531951A (en) * 1944-08-02 1950-11-28 W I Westervelt Interference reducing method of secret communication
US2619635A (en) * 1950-06-19 1952-11-25 Herman N Chait Arbitrarily polarized antenna system
US2780673A (en) * 1950-09-15 1957-02-05 Westinghouse Electric Corp Phasing system
US2883523A (en) * 1955-09-07 1959-04-21 Francis P Meserow Wireless communication system
US3112486A (en) * 1958-04-07 1963-11-26 Zenith Radio Corp Remote control system
US3111668A (en) * 1960-08-22 1963-11-19 Avco Corp Polarization diversity modulation
US6204810B1 (en) 1997-05-09 2001-03-20 Smith Technology Development, Llc Communications system
US10630510B2 (en) 2015-04-20 2020-04-21 University Of Notre Dame Du Lac Space-polarization modulated communications

Also Published As

Publication number Publication date
US2357439A (en) 1944-09-05

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