Title :
Noise temperature measurement of finite compact aperture array
Author :
Zhang, Ye ; Brown, Anthony K.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
A dual polarized aperture array consisting of Octagonal Ring Antennas (ORA) operating in the AA-mid frequency range between 400 MHz and 1.4 GHz has been developed for the Square Kilometre Array. A finite array with the aperture size of 1m × 1m had been fabricated. The subarray elements of the finite array are connected to self-developed LNAs or commercially available LNAs. The noise temperature of the ORA antennas integrated with different LNAs can then be compared. A flexible beamforming network has been used to combine different number of active elements for the hot and cold load measurements.
Keywords :
antenna arrays; aperture antennas; array signal processing; electromagnetic wave polarisation; low noise amplifiers; temperature measurement; thermal noise; AA-mid frequency; LNA; ORA antennas; active elements; cold load measurements; dual polarized aperture array; finite compact aperture array; flexible beamforming network; frequency 400 MHz to 1.4 GHz; hot load measurements; noise temperature measurement; octagonal ring antennas; square kilometre array; subarray elements; Antenna arrays; Arrays; Finite element analysis; Frequency measurement; Noise; Noise measurement; Temperature measurement;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2013 International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4673-5705-0
DOI :
10.1109/ICEAA.2013.6632398
