EP 0938155 A3 20000920 - Method and device for calibration of an antenna array
Title (en)
Method and device for calibration of an antenna array
Title (de)
Verfahren und Vorrichtung zum Kalibrieren einer Gruppenantenne
Title (fr)
Procédé et appareil d'étalonnage d'un réseau d'antennes
Publication
Application
Priority
DE 19806914 A 19980219
Abstract (en)
[origin: US5940032A] A method and apparatus for calibrating transmission and reception paths of a group antenna with an adaptive radiation pattern is provided, in which one transmission signal after the other is transmitted over each transmission path (DA1, . . . ,DAN; Tx1, . . . ,TxN; DP1, . . . ,DPN), a signal portion is decoupled from each transmission signal and the decoupled portion of at least one transmission signal is divided into as many equal parts of equal strength and equal phase as reception paths present. These equal parts of the decoupled transmission signal portion are coupled into the respective reception paths and the strengths and phases of the equal parts transmitted over the respective reception paths (DP1, . . . ,DPN; Rx1, . . . ,RxN; AD1, . . . ,ADN) are measured. The transmission factors of all other ones transmission paths and reception paths are determined from known transmission factor values for them and the measured strengths and phases of the equal parts of the at least one transmission path. Deviations of the resulting transmission factors are compensated by changing weighting factors of a radiation pattern network (Tx-BFN, Rx-BFN).
IPC 1-7
IPC 8 full level
H01Q 3/26 (2006.01)
CPC (source: EP US)
H01Q 3/267 (2013.01 - EP US)
Citation (search report)
- [X] US 5412414 A 19950502 - AST HARRY C [US], et al
- [A] EP 0762541 A2 19970312 - SIEMENS AG [DE]
- [A] US 4532518 A 19850730 - GAGLIONE STANLEY [US], et al
- [A] US 5038146 A 19910806 - TROYCHAK JOSEPH A [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0938155 A2 19990825; EP 0938155 A3 20000920; DE 19806914 A1 19990909; DE 19806914 C2 20020131; US 5940032 A 19990817
DOCDB simple family (application)
EP 98123105 A 19981203; DE 19806914 A 19980219; US 23866099 A 19990126