Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1991-08-12
1993-11-30
Ng, Jin F.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
343702, 343789, 343790, 455 90, H04M 1100, H01Q 124, H01Q 142, H01Q 916
Patent
active
052672972
ABSTRACT:
A base station for a mobile communications system including an antenna for transmitting a radio carrier wave to a mobile communications device and receiving signals therefrom, a coaxial external conductor including a skirt in the form of a sun shade having a length equal to a quarter wavelength of the radio carrier wave, a radio section located inside the coaxial external conductor for providing radio communication with the mobile communication device via the antenna, and a connecting section connecting the radio section to a telephone line and where the antenna is configured in the form of an upper disk of a discone antenna and where the skirt is a lower conical member of the discone antenna.
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Richmond, Jack H., "Minopole Antena on Circular Disk", IEEE, vol. 32, May 1984.
Ishizaki Yasuhiro
Kawano Minori
Komatsu Fumiaki
Kuroda Eiichi
Kuroiwa Hiroyuki
Cumming William
Mitsubishi Denki & Kabushiki Kaisha
Ng Jin F.
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