Intrabuilding wireless communication system

Details Intrabuilding wireless communication system Intrabuilding wireless communication system

1989-01-19

1990-07-10

Hille, Rolf

Communications: radio wave antennas

Antennas

Wave guide type

343785, 343893, H01Q 2100, H01Q 1300

Patent

active

049409905

ABSTRACT:
An intrabuilding wireless communication system is disclosed wherein a work space is divided into a radiation zone seldom entered or occupied by workers and into which the signal carrying radiation is directed and contained i.e. the space adjacent to the ceiling and extending down about 1 meter and a substantially radiation free zone that is mormally occupied by workers. A master node antennae and each of the subscriber antennae (one for each work station in the work space) are located within the radiation space.
The master antennae will preferably be an omni-directional antennae formed by a pair of substantially mirror image frusta-conical disks, axially aligned along their conical axes and with their minimum radius end faces in spaced parallel facing relationship. An axially extending probe through one of the disks and terminating at one end as an antennae in a space between the minimum radius end faces and at its opposite end as another antennae in a waveguide delivering and conveying energy to and from the master antennae.

REFERENCES:
patent: 3829863 (1974-08-01), Lipsky
patent: 4143377 (1979-03-01), Salvat et al.
patent: 4349826 (1982-09-01), Lucanera
patent: 4468672 (1984-08-01), Dragone
patent: 4575727 (1986-03-01), Stern et al.
patent: 4673947 (1987-06-01), Newham
patent: 4783665 (1988-11-01), Lier et al.
W. L. Barrow, et al. Biconical Electromagnetic Thorns Proceedings of the I.R.E. vol. 27, No. 12, Dec. 1939.
Wirless Communications for Office Information Networks--Pahlavan--IEEE Communications Magazine, vol. 23 No. 6, Jun. 1985.
Horizontally Polarized Biconical Horn Antenna Using Metal Plate Lens--Uenakada--Electronics and Communications in Japan, vol. 59-B No. 7, 1976.
Dielectric Tapered Rod Antennas for Millimeter-Wave Applications--Kobayashi et al.--IEEE Transactions on Antennas and Propagation, vol. AP-30, No. 1, Jan. 1981.
Cordless Communication within Buildings: results of measurements at 900 MHz and 60 GHz--Alexander et al.--Br Telecom Technol J, vol. 1, Jul. 1983.

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