Title :
High-frequency local oscillator transmission for the Atacama large millimeter array (ALMA)
Author_Institution :
National Radio Astron. Obs., Charlottesville, VA, USA
Abstract :
The Atacama large millimeter array (ALMA) is an international radio astronomical facility currently under construction in Chile [Wooten, A et al., 2005]. Due to the unprecedented combination of high frequency and long baselines, and the requirement that it operate as an interferometer, the array requires Local Oscillators (LO) and LO references with extremely low phase-noise and phase drift. The LO requirements, design implementation, and preliminary results are presented.
Keywords :
antenna arrays; microwave oscillators; millimetre wave oscillators; phase noise; radioastronomy; receiving antennas; submillimetre astronomy; submillimetre wave oscillators; Atacama large millimeter array; Chile; high-frequency local oscillator transmission; interferometer; international radio astronomical facility currently; phase drift; phase-noise; Atmosphere; Calibration; Degradation; Fiber lasers; Frequency; Instruments; Laser noise; Local oscillators; Phased arrays; Stability;
Conference_Titel :
LEOS Summer Topical Meetings, 2005 Digest of the
Print_ISBN :
0-7803-8981-6
DOI :
10.1109/LEOSST.2005.1528022
