Hardware Overview

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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 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.


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.

Downconverter System

Downconverter

Digital Correlator

Digital Correlator