Difference between revisions of "Hardware Overview"

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(Frontend System)
(Frontend System)
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== Frontend System ==
 
== Frontend System ==
 
[[File:Feed_package.png|thumb|right|150px|Two perspective views of the 2.1-m antenna front end feed package]]
 
[[File:Feed_package.png|thumb|right|150px|Two perspective views of the 2.1-m antenna front end feed package]]
The front end system consists of a broadband (1-18 GHz) dual-polarization log-periodic crossed-dipole feed, and a thermally-controlled RF box that houses the amplifiers, calibration noise source (noise diode), attenuators, and optical transmitters needed to control the gain of the system and supply the two RF signals multiplexed onto a single optical fiber output.
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The front end system consists of a broadband (1-18 GHz) dual-polarization log-periodic crossed-dipole feed, and a thermally-controlled RF box (called the FEM, or Front End Module) that houses the amplifiers, calibration noise source (noise diode), attenuators, and optical transmitters needed to control the gain of the system and supply the two RF signals multiplexed onto a single optical fiber output.
  
  
[[File:Eovsa_front_end_block.png|thumb|right|600px|Front End]]
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[[File:Eovsa_front_end_block_diagram.png|thumb|right|600px|Front End]]
The frontend system has two 5-bit digital attenuators in each polarization (H and V). Each one is adjustable between 0-31 dB in 1 dB step.
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The complete block diagram for the Front End Module (FEM) housed in the RF box.
  
 
== Downconverter System ==
 
== Downconverter System ==

Revision as of 16:04, 3 March 2017

Frontend System

Two perspective views of the 2.1-m antenna front end feed package

The front end system consists of a broadband (1-18 GHz) dual-polarization log-periodic crossed-dipole feed, and a thermally-controlled RF box (called the FEM, or Front End Module) that houses the amplifiers, calibration noise source (noise diode), attenuators, and optical transmitters needed to control the gain of the system and supply the two RF signals multiplexed onto a single optical fiber output.


Front End

The complete block diagram for the Front End Module (FEM) housed in the RF box.

Downconverter System

Downconverter

Digital Correlator

Digital Correlator