AMiBA Wideband Analog Correlator

AMiBA Wideband Analog Correlator

A wideband analog correlator has been constructed for the Yuan-Tseh Lee Array for Microwave Background Anisotropy. Lag correlators using analog multipliers provide large bandwidth and moderate frequency resolution. Broadband intermediate frequency distribution, back-end signal processing, and contro...

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Veröffentlicht in:The Astrophysical journal 2010-06, Vol.716 (1), p.746-757
Hauptverfasser: Li, Chao-Te, Kubo, Derek Y, Wilson, Warwick, Lin, Kai-Yang, Chen, Ming-Tang, Ho, P. T. P, Chen, Chung-Cheng, Han, Chih-Chiang, Oshiro, Peter, Martin-Cocher, Pierre, Chang, Chia-Hao, Chang, Shu-Hao, Altamirano, Pablo, Jiang, Homin, Chiueh, Tzi-Dar, Lien, Chun-Hsien, Wang, Huei, Wei, Ray-Ming, Yang, Chia-Hsiang, Peterson, Jeffrey B, Chang, Su-Wei, Huang, Yau-De, Hwang, Yuh-Jing, Kesteven, Michael, Koch, Patrick, Liu, Guo-Chin, Nishioka, Hiroaki, Umetsu, Keiichi, Wei, Tashun, Wu, Jiun-Huei Proty
Format: Artikel
Sprache:eng
Schlagworte:
ANISOTROPY
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BACKGROUND RADIATION
Correlation
Earth, ocean, space
ELECTROMAGNETIC RADIATION
Exact sciences and technology
INTERFEROMETERS
MEASURING INSTRUMENTS
MICROWAVE RADIATION
RADIATIONS
RELICT RADIATION
TELESCOPES
Wideband
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Beschreibung
Zusammenfassung:A wideband analog correlator has been constructed for the Yuan-Tseh Lee Array for Microwave Background Anisotropy. Lag correlators using analog multipliers provide large bandwidth and moderate frequency resolution. Broadband intermediate frequency distribution, back-end signal processing, and control are described. Operating conditions for optimum sensitivity and linearity are discussed. From observations, a large effective bandwidth of around 10 GHz has been shown to provide sufficient sensitivity for detecting cosmic microwave background variations.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/716/1/746