Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-08-25
1998-06-23
Eisenzopf, Reinhard J.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455562, H04Q 720
Patent
active
057714495
ABSTRACT:
The preferred embodiment of the present invention is a communications apparatus which includes a first transmitting antenna array (15A) having a transmitting antenna (16) which is dedicated to serves only a first sector (12). Similarly, a second transmitting antenna array (17A) having a transmitting antenna (18) is dedicated to serve only a second sector (14). Each of the transmitting antenna arrays (15A, 17A) have a beamwidth (19) of generally less than fifteen degrees. Both the first and the second transmitting antenna arrays (15A, 17A) emanate shaped beams which are alternately polarized to ensure the isolation of beams that serve adjacent sectors.
REFERENCES:
patent: 2288802 (1942-07-01), Hammond, Jr.
patent: 4525861 (1985-07-01), Freeburg
patent: 4528656 (1985-07-01), Morais
patent: 4633463 (1986-12-01), Mack
patent: 4704733 (1987-11-01), Kawano
patent: 4747160 (1988-05-01), Bossard
patent: 4783664 (1988-11-01), Karikomi et al.
patent: 4785450 (1988-11-01), Bolgiano et al.
patent: 4920567 (1990-04-01), Malek
patent: 5212830 (1993-05-01), Miller
patent: 5280297 (1994-01-01), Profera, Jr.
patent: 5491739 (1996-02-01), Wadin et al.
"Constrained Feeds for Limited Scan Arrays", Edward C. DuFort, IEEE, May 1978, pp. 407-413.
An Overlapped Subarray for Scan Application, Robert J. Maillous, IEEE Transactions on Antennas and Propagation, May 1974, pp. 487-489.
"Cellular Mobile Technology: The Great Multiplier", by Cooper & Nettleton, IEEE Spectrum, Jun. 1983.
"Multiple Access Digital Microwave Radio System for Local Subscribers", by Murakami et al., IEEE International Conference on Communications '83, Jun. 1983, p. b.2.5.1.
"Digital Termination Systems", by Urich & Bohm, Computerworld, 6 Jun. 1984, pp. 35-38.
"Mitchell Commits to Cellular Television Study", by Mihelich, Private Cable, Feb. 1991.
"New Autoplex Cell Site Paves The Way For Digital Cellular Communications", Hardy & Lemp, AT&T Technology, No. 4, 1990, pp. 20-25.
"Low Power Television", by George Jacobs, IEEE Spectrum, Jun. 1982.
"The Digital Termination System Solution for High Speed Local Distribution", by Donald Silverman, Microwave Journal, Jan. 1983.
Blasing Raymond R.
Keible Edward A.
Likins Paul
Lockie Douglas G.
Mohwinkel Clifford A.
Bhattachavya Sam
Eisenzopf Reinhard J.
Endlink, Inc.
LandOfFree
Sectorized multi-function communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sectorized multi-function communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sectorized multi-function communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1401644