A wideband analog correlator system for AMiBA

被引：16

作者：

Li, CT ^{[1
]}

Kubo, D ^{[1
]}

Han, CC ^{[1
]}

Chen, CC ^{[1
]}

Chen, MT ^{[1
]}

Lien, CH ^{[1
]}

Wang, H ^{[1
]}

Wei, RM ^{[1
]}

Yang, CH ^{[1
]}

Chiueh, TD ^{[1
]}

Peterson, J ^{[1
]}

Kesteven, M ^{[1
]}

Wilson, W ^{[1
]}

机构：

[1] Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan

来源：

MILLIMETER AND SUBMILLIMETER DETECTORS FOR ASTRONOMY II | 2004年 / 5498卷

关键词：

wideband correlator; voltage-to-frequency converter; AMiBA;

D O I：

10.1117/12.550993

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A wideband correlator system with a bandwidth of 16 GHz or more is required for (A) under bar rray for (M) under bar icrowave (B) under bar ackground (A) under bar nisotropy (AMiBA) to achieve the sensitivity of 10 mu K 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.

引用

页码：455 / 463

页数：9

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