96-antenna radioheliograph

Here we briefly present some design approaches for a multifrequency 96-antenna radioheliograph. The array antenna configuration, transmission lines and digital receivers are the main focus of this work. The radioheliograph is a T-shaped centrally-condensed radiointerferometer operating at the freque...

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Bibliographic Details
Published inarXiv.org
Main Authors Lesovoi, S V, Altyntsev, A T, Ivanov, E F, Gubin, A V
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.03.2014
Subjects
Antenna arrays
Antennas
Configurations
Data transmission
Delay
Field programmable gate arrays
Frequency ranges
Optical communication
Physics - Instrumentation and Methods for Astrophysics
Receivers
Receivers & amplifiers
Signal processing
T shape
Tracking
Transceivers
Transmission lines
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Summary:Here we briefly present some design approaches for a multifrequency 96-antenna radioheliograph. The array antenna configuration, transmission lines and digital receivers are the main focus of this work. The radioheliograph is a T-shaped centrally-condensed radiointerferometer operating at the frequency range 4-8~GHz. The justification for the choice of such a configuration is discussed. The antenna signals are transmitted to a workroom by analog optical links. The dynamic range and phase errors of the microwave-over-optical signal are considered. The signals after downconverting are processed by the digital receivers for delay tracking and fringe stopping. The required delay tracking step and data rates are considered. Two 3-bit data streams (I and Q) are transmitted to a correlator with the transceivers embedded in FPGA (Field Programmed Gate Array) chips and with PCI Express cables.
ISSN:2331-8422
DOI:10.48550/arxiv.1403.4748