A wideband analog correlator system for AMiBA

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

doi:10.1117/12.550993

8 October 2004 A wideband analog correlator system for AMiBA

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

Author Affiliations +

Proceedings Volume 5498, Millimeter and Submillimeter Detectors for Astronomy II; (2004) https://doi.org/10.1117/12.550993
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

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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, and Warwick Wilson "A wideband analog correlator system for AMiBA", Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); https://doi.org/10.1117/12.550993

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