Title :
THousand Element Array (THEA)
Author :
Smolders, A.B. ; Kant, G.W.
Author_Institution :
Netherlands Found. for Res. in Astron., Dwingeloo, Netherlands
Abstract :
As part of the development path towards a new radio telescope, the Square Kilometre Array, a demonstrator phased-array system (THEA) is currently being build in the Netherlands. THEA consists of 1024 receiving elements connected to a novel mixed RF/digital beamforming architecture that produces 32 beams simultaneously. Adaptive digital nulling techniques are applied to reduce the effect of interfering signals. A system overview is presented as well as some preliminary results.
Keywords :
adaptive antenna arrays; antenna phased arrays; array signal processing; interference suppression; multibeam antennas; radiofrequency interference; radiotelescopes; receiving antennas; Netherlands; RFI; Square Kilometre Array; THEA; Thousand Element Array; adaptive digital nulling; demonstrator phased-array system; interference suppression; interfering signals reduction; mixed RF/digital beamforming architecture; multibeam operation; radio telescope; receiving elements; Optical fiber communication; Phased arrays; RF signals; Radio astronomy; Radio frequency; Receiving antennas; Slot antennas; Structural beams; Testing; Tiles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.873735
