Communications: directive radio wave systems and devices (e.g. – Determining direction – Lobe switching
Patent
1988-05-31
1989-11-14
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Determining direction
Lobe switching
342368, G01S 1300, H01Q 322
Patent
active
048810789
ABSTRACT:
In a tracking system for a stationary satellite, a phased array is used for an antenna mounted on an automobile. The phased array antenna has a sharp beam which is switched between two different directions in azimuth. The antenna beam is switched between the two directions periodically by control of phase constants in a feeding circuit of the antenna and comparison is made in strength between signals received before and after the beam switching to obtain an error signal as an azimuth error signal. Then, the antenna is mechanically moved in azimuth according to the azimuth error signal until the azimuth error signal becomes zero. In a case the antenna beam is also switched between two directions in elevation, the antenna beam is switched in elevation during an interval between successive two times of the beam switching operation in azimuth and detects a difference in strength of signals received before and after the switching in elevation to thereby produce the difference as an elevation error signal. The antenna is mechanically moved in elevation according to the elevation error signal until the elevation error signal becomes zero.
REFERENCES:
patent: 3725937 (1973-04-01), Schreiber
patent: 3969729 (1976-07-01), Nemit
Kuramoto Akio
Nakayama Makoto
Shimizu Ryuji
Yamane Toshinobu
Issing Gregory C.
NEC Corporation
Tarcza Thomas H.
LandOfFree
Tracking system with beam switching antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tracking system with beam switching antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracking system with beam switching antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1855080