Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1988-03-03
1989-11-14
Moskowitz, Nelson
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
455 33, 379 60, G01S 504
Patent
active
048810827
ABSTRACT:
An antenna beam boundary detector for a sectorized cellular system is disclosed. The difference in signal level received by a main directional antenna and a broad beamwidth antenna is determined by detecting a modulator signal locally impressed on the signal received by the broad beamwidth antenna. The signal level difference factor is the directional antenna beam boundary when the two antennas are correlated. Interferometer effects are cancelled by detecting both amplitude and phase modulation of the locally impressed modulation.
REFERENCES:
patent: H288 (1987-06-01), Gutleber
patent: 3537011 (1970-10-01), Escoula
patent: 3717814 (1973-02-01), Gans
patent: 3745464 (1973-07-01), Lee
patent: 3798547 (1974-03-01), Reudink
patent: 3860872 (1975-01-01), Richardson et al.
patent: 3911364 (1975-10-01), Langseth et al.
patent: 4160952 (1979-07-01), Seastrand, Jr.
patent: 4249181 (1981-02-01), Lee
patent: 4320535 (1982-03-01), Brady et al.
patent: 4373210 (1983-02-01), Karabinis et al.
patent: 4449192 (1984-05-01), Watanabe et al.
patent: 4519096 (1985-05-01), Cerny, Jr.
patent: 4556760 (1985-12-01), Goldman
patent: 4661993 (1987-04-01), Leland et al.
patent: 4667202 (1987-05-01), Kammerlander
patent: 4694484 (1987-09-01), Atkinson et al.
patent: 4704734 (1987-11-01), Menich et al.
patent: 4718081 (1988-01-01), Brenig
Fluhr et al.; "Control Architecture"; Bell System Technical Journal, vol. 58, No. 1, Jan., 1979, p. 43-69.
Ehrlich; "Advanced Mobile Phone Service Using Cellular Technology"; Microwave Journal, Aug., 1983; pp. 119-126.
Lee, "Mobile Cellular Systems Conserve Frequency Resources"; MSN & CT, June, 1985, pp. 139-150.
G.E. Romaine; R.F. Design; pp. 13 & 14; Nov., 1987.
Pierce et al., "Multiple Diversity with Nonindependent Fading", Proceedings of the IRE, Jan., 1960, pp. 89-104.
Porter, "Supervision and Control Features of a Small-Zone Radiotelephone System", IEEE Transactions on Vehicular Technology, vol. 20, No. 3, Aug., 1971, pp. 75-79.
Hackbart Rolland R.
Issing Gregory C.
Jenski Raymond A.
Moskowitz Nelson
Motorola Inc.
LandOfFree
Antenna beam boundary detector for preliminary handoff determina does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna beam boundary detector for preliminary handoff determina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna beam boundary detector for preliminary handoff determina will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1855141