Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Antenna control
Patent
1987-11-12
1989-09-19
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Antenna control
342157, 342158, 343762, 343777, G01S 1372, H01Q 1322, H01Q 322
Patent
active
048685747
ABSTRACT:
An electronically scanned radar system has a serpentine antenna, with at least two ports. The antenna is physically rotated. Each port has a mixer, transmitter and local oscillator feeding signals to it, the signals of the transmitter and oscillator being synchronized with one another to take advantage of the physical rotation of the antenna. The radar system can be operated in various ways to produce two independent beams simultaneously in a surveillance mode and/or tracking mode at each port. Furthermore, with the use of coupling means, the system can be operated to produce four independent beams at two different frequencies simultaneously. The system can also be operated to produce one or more beams in a surveillance mode and/or one or more beams in a tracking mode at each port. Further, the system can be operated to compensate for the physical rotation of the antenna and can avoid jammers by hopping to another frequency.
REFERENCES:
patent: 3938149 (1976-02-01), Granthan
patent: 3949396 (1976-04-01), Cantrell
patent: 4034374 (1977-07-01), Kruger
patent: 4118703 (1978-10-01), Williams
patent: 4243990 (1981-01-01), Nemit et al.
Goebels, Jr. et al. "Four Independent Beams from a Single Linear Array", IEEE Trans. Ant. Prop., Sep./1965, pp. 683-691.
Barron Jr. Gilberto
Com Dev Ltd.
Schnurr Daryl W.
Tarcza Thomas H.
LandOfFree
Electronically scanned radar 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 Electronically scanned radar system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronically scanned radar system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-371585