Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-01-26
1978-04-25
Griffin, Robert L.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
325 58, 179 15BS, 343204, 178 53, H04J 308
Patent
active
040865371
ABSTRACT:
Receiving conditions are classified into three types-- "good condition", "intermediate condition" and "bad condition". Where the receiving condition is an "intermediate condition," a receiving section continues with a receiving operation by supplying power thereto through a first normally closed switch from a power source. Where the receiving condition is both a "good condition" and a "bad condition", the first normally closed switch is closed, only during a specific period having the necessary information signals supplied from a time band designating means, to supply power from the power source to the receiving section thus to extract the necessary information signals by a signal processing section from the receiving input signals supplied from the receiving section, whereas the first normally closed switch is opened, during the remaining period to interrupt the power supply from the power source to the receiving section thus to stop the receiving operation.
REFERENCES:
patent: 3409889 (1968-11-01), Graham
patent: 3757032 (1973-09-01), Minerd et al.
patent: 3774114 (1973-11-01), Dahlgren
patent: 3830982 (1974-08-01), Christiansen
patent: 3843843 (1974-10-01), Solomon et al.
patent: 3889064 (1975-06-01), Fletcher
patent: 3903371 (1975-09-01), Colton et al.
patent: 3914536 (1975-10-01), Mohri
patent: 3940563 (1976-02-01), Susset
patent: 3987250 (1976-10-01), Barbier et al.
Asakawa Shigeru
Gotoh Akio
Okamoto Shigenori
Sugiyama Fumio
Chin Tommy P.
Griffin Robert L.
Nippon Telegraph & Telephone Public Corporation
Tokyo Shibaura Electric Co. Ltd.
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