EP 0623969 A3 19951227 - Phased array antenna with optical beamforming device.
Title (en)
Phased array antenna with optical beamforming device.
Title (de)
Gruppenantenne mit optischem Strahlformungs-Netzwerk.
Title (fr)
Réseau d'antennes à commande de phase à dispositif de commande de faisceau opto-électronique.
Publication
Application
Priority
DE 4314406 A 19930503
Abstract (en)
[origin: EP0623969A2] A two-dimensional active antenna array, in particular, is proposed having an optical beam-forming network for on-board radar and Synthetic Aperture Radar (SAR) using x-band. Special shapes of the antenna aperture, use and frequency band are possible. A transmitted signal or local oscillator signal in the microwave frequency band and an alternatively additional digital signal modulate a central electrooptic transducer, using the time-division multiplex method. The optical heterodyne signal of this electrooptical transducer is injected into an optical beam-forming network, is amplified via at least one optical amplifier and is transferred to the individual T/R modules in a corresponding manner via optical dividers. After conversion of the optical signals by means of an optoelectrical transducer, and after phase-weighting and amplitude-weighting of the microwave signals, amplification is carried out followed by emission of the electromagnetic signal by means of aerial elements. Based on this arrangement, a further active antenna array is described which uses the beam-forming network bidirectionally. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 3/26 (2006.01)
CPC (source: EP)
H01Q 3/2676 (2013.01)
Citation (search report)
- [Y] US 5051754 A 19910924 - NEWBERG IRWIN L [US]
- [AP] US 5247309 A 19930921 - REICH STANLEY M [US]
- [Y] US 4885589 A 19891205 - EDWARD BRIAN J [US], et al
- [XP] DE 4136801 A1 19930513 - DAIMLER BENZ AG [DE]
- [AD] US 4814773 A 19890321 - WECHSBERG MICHAEL [US], et al
- [A] EP 0006650 A2 19800109 - HOLLANDSE SIGNAALAPPARATEN BV [NL] & US 4258363 A 19810324 - BODMER MAXIMILIAAN H, et al
- [A] A. SEEDS: "Optical beamforming techniques for phased-array antennas", MICROWAVE JOURNAL, vol. 35, no. 7, July 1992 (1992-07-01), NORWOOD, MA, US, pages 74 - 83, XP000310936
- [A] P. R. HERCZFELD: "The application of lightwave technology to microwaves", 20 TH EUROPEAN MICROWAVE CONFERENCE, vol. 1, September 1990 (1990-09-01), BUDAPEST, HUNGARY, pages 89 - 94
- [A] E. PANSINI ET AL: "Experimental evaluation of optical signal distribution for phased array antenna", ELECTRONICS LETTERS, vol. 27, no. 5, 28 February 1991 (1991-02-28), STEVENAGE GB, pages 404 - 406, XP000219734, DOI: doi:10.1049/el:19910257
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0623969 A2 19941109; EP 0623969 A3 19951227; EP 0623969 B1 20010627; DE 4314406 A1 19941110; DE 4314406 C2 20021121; DE 59409791 D1 20010802
DOCDB simple family (application)
EP 94106631 A 19940428; DE 4314406 A 19930503; DE 59409791 T 19940428