EP 1291972 A1 20030312 - Radioholographic aerials apparatus and method therefor
Title (en)
Radioholographic aerials apparatus and method therefor
Title (de)
Verfahren und Herstellung eines Radiohologramms
Title (fr)
Méthode et appareil pour la production d'hologrammes
Publication
Application
Priority
EP 01120855 A 20010830
Abstract (en)
The invention concerns to a radio engineering and can be used for construction of radioholographic aerials with the required diagram of an orientation (D.O.) mainly in a range of a MICROWAVE, including flat radioholographic aerials for satellite communication. The application of a way provides expansion of classes of created aerials, high accuracy of reproduction required D.O., opportunity of reduction of the sizes of flat radioholographic aerials. Record of the radiohologram carry out by an electrical way. Thus use a subject radiowave as a field complex-connected required D.0. The binary radiohologram, made by results of record, reproduces required D.0. In the flat radioholographic aerial irradiator (receiver) 3 is placed at an end face flat binary radiohologram and is combined by the phase centre with the centre O; the concentric circles which have been carried out with a step, equal to length wave lambda of irradiator. On concentric circles are located or arc metal strips 18, or strips 18 and arc of crack 21, or arc of crack 20, displaying structure of radiohologram. The introduction of the metal screen 16 provides sharp-directed D.O. in perpendicular plane; direction and opportunity of reduction of thickness radiohologram up to a level commensurable with lambda /4<SQRT> epsilon </SQRT>, where epsilon - dielectrical permeability of dielectrical material of substrate 17. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 19/06 (2006.01)
CPC (source: EP)
H01Q 19/067 (2013.01)
Citation (search report)
- [A] RU 2089921 C1 19970910 - KOVALEV IGOR P [RU]
- [A] WO 9940687 A1 19990812 - SANFORD JOHN R [US]
- [A] EP 1046962 A2 20001025 - ADVANTEST CORP [JP]
- [A] US 4783134 A 19881108 - HARA TSUTOMU [JP], et al
- [A] US 6140960 A 20001031 - KITAYOSHI HITOSHI [JP]
- [A] SHAHABADI M ET AL: "MILLIMETER-WAVE HOLOGRAPHIC POWER SPLITTING/COMBINING", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE INC. NEW YORK, US, vol. 45, no. 12, PART 2, 1 December 1997 (1997-12-01), pages 2316 - 2323, XP000732015, ISSN: 0018-9480
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01120855 A 20010830