GB368954A - System for reducing fading effects in radio communication - Google Patents

System for reducing fading effects in radio communication

Info

Publication number
GB368954A
GB368954A GB561931A GB561931A GB368954A GB 368954 A GB368954 A GB 368954A GB 561931 A GB561931 A GB 561931A GB 561931 A GB561931 A GB 561931A GB 368954 A GB368954 A GB 368954A
Authority
GB
United Kingdom
Prior art keywords
amplifiers
source
push
kolster
aerials
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
GB561931A
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.)
KOLSTER RADIO CORP
Original Assignee
KOLSTER RADIO CORP
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 KOLSTER RADIO CORP filed Critical KOLSTER RADIO CORP
Priority to GB561931A priority Critical patent/GB368954A/en
Publication of GB368954A publication Critical patent/GB368954A/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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Landscapes

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

Abstract

368,954. Wireless signalling. KOLSTER - BRANDES, Ltd., Cray Works, Sidcup, Kent.- (Kolster Radio Corporation ; 200, Mount Pleasant Avenue, Newark, New Jersey, U.S.A.) Feb. 23, 1931, No. 5619. [Class 40 (v).] In order to minimize the effects of fading, two or more differentlyorientated aerials are energized in succession, through push-pull amplifiers, so as to transmit signals on waves of different polarization, the change from one type of radiation to the other being determined by the frequency of an alternating or polyphase source of high tension. A valve generator 1, Fig. 1, stabilized by a piezo-crystal 2 feeds a pair of amplifiers 4, 5 in parallel. Tappings from the tuned output circuit 6 are taken to two pairs 7, 9 and 8, 10 of push-pull amplifiers, the input being in parallel to the two opposite pairs 9, 10 and 7, 8. These valves respectively energize a vertical aerial 17 and an horizontal aerial 18 in alternate periods determined by the frequency of the source 19 supplying the plates of the valves. A transformer 20 supplies filament current to the whole system. In Fig. 2, three sets of push-pull amplifiers 7, 9 and 8, 10 and 22, 23 are fed with high-tension from a three-phase source 21 and successively energize the doublet aerials 17, 18, 26. In both cases the generator valve 2 and intermediate amplifiers 4, 5 are supplied from a continuous source S of plate voltage.
GB561931A 1931-02-23 1931-02-23 System for reducing fading effects in radio communication Expired GB368954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB561931A GB368954A (en) 1931-02-23 1931-02-23 System for reducing fading effects in radio communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB561931A GB368954A (en) 1931-02-23 1931-02-23 System for reducing fading effects in radio communication

Publications (1)

Publication Number Publication Date
GB368954A true GB368954A (en) 1932-03-17

Family

ID=9799487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB561931A Expired GB368954A (en) 1931-02-23 1931-02-23 System for reducing fading effects in radio communication

Country Status (1)

Country Link
GB (1) GB368954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124319A1 (en) * 1983-04-25 1984-11-07 AT&T Corp. Radio telephones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124319A1 (en) * 1983-04-25 1984-11-07 AT&T Corp. Radio telephones

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