Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Unique identity
Patent
1991-02-07
1992-01-14
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Unique identity
342 51, 340572, 34082554, G01S 1374, G08B 1314
Patent
active
050814583
ABSTRACT:
Hyperfrequency system for remote data transmission of the type comprises at least one reader (L) associated with a plurality of responders (R) with the reader (L) comprising means to generate a hyperfrequency wave which has a certain rectilinear polarization, while each responder (R) is fitted with a rectangular flat antenna for reemission (1) which is capable of receiving said hyperfrequency wave and reemitting it with orthogonal polarization and phase modulation at two stages representing the data to be transmitted to reader (L), characterized in that the phase modulation is achieved by two transistors (Qa, Qb) which are connected respectively to two adjacent corners (a, b) of antenna (1), these two transistors being alternately blocked and saturated at the rhythm of the data to be transmitted, by additional control signals originating in an appropriate processing unit (4) in order to short circuit alternately the corresponding corner of the antenna.
REFERENCES:
patent: 3366952 (1968-01-01), Mori
patent: 3774205 (1973-11-01), Smith et al.
patent: 4724427 (1988-02-01), Carrol
patent: 4724443 (1988-02-01), Nysen
patent: 4786907 (1988-11-01), Koelle
patent: 4899158 (1990-02-01), Saeki et al.
Barron Jr. Gilberto
Compagnie de Signaux et d'Equipements Electroniques
LandOfFree
Hyperfrequency system for remote data transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hyperfrequency system for remote data transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hyperfrequency system for remote data transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-544109