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Proceedings Paper

A wideband analog correlator system for AMiBA
Author(s): Chao-Te Li; Derek Kubo; Chih-Chiang Han; Chung-Cheng Chen; Ming-Tang Chen; Chun-Hsien Lien; Huei Wang; Ray-Ming Wei; Chia-Hsiang Yang; Tzi-Dar Chiueh; Jeffrey Peterson; Michael Kesteven; Warwick Wilson
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Paper Abstract

A wideband correlator system with a bandwidth of 16 GHz or more is required for Array for Microwave Background Anisotropy (AMiBA) to achieve the sensitivity of 10μK in one hour of observation. Double-balanced diode mixers were used as multipliers in 4-lag correlator modules. Several wideband modules were developed for IF signal distribution between receivers and correlators. Correlator outputs were amplified, and digitized by voltage-to-frequency converters. Data acquisition circuits were designed using field programmable gate arrays (FPGA). Subsequent data transfer and control software were based on the configuration for Australia Telescope Compact Array. Transform matrix method will be adopted during calibration to take into account the phase and amplitude variations of analog devices across the passband.

Paper Details

Date Published: 8 October 2004
PDF: 9 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.550993
Show Author Affiliations
Chao-Te Li, Institute of Astronomy and Astrophysics (Taiwan)
Derek Kubo, Institute of Astronomy and Astrophysics (Taiwan)
Chih-Chiang Han, Institute of Astronomy and Astrophysics (Taiwan)
Chung-Cheng Chen, Institute of Astronomy and Astrophysics (Taiwan)
Ming-Tang Chen, Institute of Astronomy and Astrophysics (Taiwan)
Chun-Hsien Lien, National Taiwan Univ. (Taiwan)
Huei Wang, National Taiwan Univ. (Taiwan)
Ray-Ming Wei, National Taiwan Univ. (Taiwan)
Chia-Hsiang Yang, National Taiwan Univ. (Taiwan)
Tzi-Dar Chiueh, National Taiwan Univ. (Taiwan)
Jeffrey Peterson, Carnegie Mellon Univ. (United States)
Michael Kesteven, Australia Telescope National Facility (Australia)
Warwick Wilson, Australia Telescope National Facility (Australia)

Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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