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A 2-20-GHz Analog Lag Correlator for Radio Interferometry

Abstract:

We present the design and testing of a 2-20-GHz continuum-band analog lag correlator with 16 frequency channels for astronomical interferometry. The correlator has been designed for future use with a prototype single-baseline interferometer operating at 185-275 GHz. The design uses a broad-band Wilkinson divider tree with integral thin-film resistors implemented on an alumina substrate, and custom-made broad-band InGaP/GaAs Gilbert Cell multipliers. The prototype correlator has been fully ben...

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Publication status:
Published

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Publisher copy:
10.1109/TIM.2012.2184960

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
Journal:
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume:
61
Issue:
8
Pages:
2253-2261
Publication date:
2012-08-05
DOI:
EISSN:
1557-9662
ISSN:
0018-9456
URN:
uuid:6a418cb0-83df-4166-a148-77b494efce28
Source identifiers:
310242
Local pid:
pubs:310242

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