scholarly journals Sensitivity of Antenna Arrays for Long-Wavelength Radio Astronomy

2011 ◽  
Vol 59 (6) ◽  
pp. 1855-1863 ◽  
Author(s):  
Steven W. Ellingson
Keyword(s):  
Radio Astronomy ◽  
Antenna Arrays ◽  
Long Wavelength

scholarly journals A Wide-Band, Active Antenna System for Long Wavelength Radio Astronomy

2012 ◽  
Vol 124 (920) ◽  
pp. 1090-1104 ◽  
Author(s):  
Brian C. Hicks ◽  
Nagini Paravastu-Dalal ◽  
Kenneth P. Stewart ◽  
William C. Erickson ◽  
Paul S. Ray ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Wide Band ◽  
Antenna System ◽  
Active Antenna ◽  
Long Wavelength

scholarly journals Space-based aperture array for ultra-long wavelength radio astronomy

2015 ◽  
Vol 41 (1-2) ◽  
pp. 271-306 ◽  
Author(s):  
Raj Thilak Rajan ◽  
Albert-Jan Boonstra ◽  
Mark Bentum ◽  
Marc Klein-Wolt ◽  
Frederik Belien ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Long Wavelength ◽  
Aperture Array

scholarly journals Development of a multi-frequency interferometer telescope for radio astronomy (MITRA)

2015 ◽  
Author(s):  
◽  
Dominique Guelord Kumamputu Ingala
Keyword(s):  
Radio Astronomy ◽  
Antenna Arrays ◽  
Software Defined Radio ◽  
Low Cost ◽  
Noise Temperature ◽  
Intermediate Frequency ◽  
Total Power ◽  
Dipole Antennas ◽  
University Of Technology ◽  
Receiver System

This dissertation describes the development and construction of the Multi-frequency Interferometer Telescope for Radio Astronomy (MITRA) at the Durban University of Technology. The MITRA station consists of 2 antenna arrays separated by a baseline distance of 8 m. Each array consists of 8 Log-Periodic Dipole Antennas (LPDAs) operating from 200 MHz to 800 MHz. The design and construction of the LPDA antenna and receiver system is described. The receiver topology provides an equivalent noise temperature of 113.1 K and 55.1 dB of gain. The Intermediate Frequency (IF) stage was designed to produce a fixed IF frequency of 800 MHz. The digital Back-End and correlator were implemented using a low cost Software Defined Radio (SDR) platform and Gnu-Radio software. Gnu-Octave was used for data analysis to generate the relevant received signal parameters including total power, real, and imaginary, magnitude and phase components. Measured results show that interference fringes were successfully detected within the bandwidth of the receiver using a Radio Frequency (RF) generator as a simulated source. This research was presented at the IEEE Africon 2013 / URSI Session Mauritius, and published in the proceedings.

A CMOS 65nm 120 dB Stacked A/D converters receiver for long wavelength radio astronomy observations

2016 ◽  
Author(s):  
Reda Mohellebi ◽  
Chadi Jabbour ◽  
Baptiste Cecconi ◽  
Herve Petit ◽  
Mustapha Dekkali ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Long Wavelength
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