GB1109227A - Improvements in or relating to electric combining networks - Google Patents

Improvements in or relating to electric combining networks

Info

Publication number
GB1109227A
GB1109227A GB370566A GB370566A GB1109227A GB 1109227 A GB1109227 A GB 1109227A GB 370566 A GB370566 A GB 370566A GB 370566 A GB370566 A GB 370566A GB 1109227 A GB1109227 A GB 1109227A
Authority
GB
United Kingdom
Prior art keywords
signal
path
switch
output circuit
input
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
GB370566A
Inventor
Geoffrey Pratt
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB370566A priority Critical patent/GB1109227A/en
Publication of GB1109227A publication Critical patent/GB1109227A/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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

1,109,227. Diversity reception systems. GENERAL ELECTRIC CO. Ltd. 27 Jan., 1967 [27 Jan., 1966], No. 3705/66. Heading H4L. In an electric network for selectively connecting in a diversity radio communication system the signals from two receivers applied at 7, 8 respectively, to an output circuit 10, a pair of relays (not shown) are controlled by the two receivers so that if the signal strength or quality of one path, e.g. path 8, falls, below an acceptable level a switch 19 is closed and a switch 22 opened, whereby the signal from this path is absorbed in a dummy load 4, and only the signal from input 7 is applied to the output circuit. Similarly, if the signal from the path 7 is unacceptable, switch 18 is closed and switch 20 opened so that the signal from 7 is dissipated at 4 and the output at 10 is provided by the input signal at 8. At other times the two input signals are added in the output circuit 10. The quality of the received signal may be determined in known manner by measuring the noise level in a frequency band adjacent to that used for the intelligence signals.
GB370566A 1966-01-27 1966-01-27 Improvements in or relating to electric combining networks Expired GB1109227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB370566A GB1109227A (en) 1966-01-27 1966-01-27 Improvements in or relating to electric combining networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB370566A GB1109227A (en) 1966-01-27 1966-01-27 Improvements in or relating to electric combining networks

Publications (1)

Publication Number Publication Date
GB1109227A true GB1109227A (en) 1968-04-10

Family

ID=9763403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB370566A Expired GB1109227A (en) 1966-01-27 1966-01-27 Improvements in or relating to electric combining networks

Country Status (1)

Country Link
GB (1) GB1109227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355419A (en) * 1979-05-14 1982-10-19 Nippon Electric Co., Ltd. Radio signal receiving system having means for selectively combining signals from a plurality of receiving sections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355419A (en) * 1979-05-14 1982-10-19 Nippon Electric Co., Ltd. Radio signal receiving system having means for selectively combining signals from a plurality of receiving sections

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