Fact Sheet

The main characteristics of the upGREAT channels are listed in the table below.

Low frequency array (LFA)

High frequency array (HFA)

RF bandwidth (*)

1.9 – 2.5 THz (goal)

~4.745 THz (±2 GHz)

IF bandwidth (*)

0.2 – 5 GHz (goal)
0.2 – 4 GHz (baseline)

Array geometry

2 x 7 pixels for orthogonal polarizations in hexagonal configuration with a central pixel

7 pixels in hexagonal configuration with a central pixel

Mixer technology

Waveguide-based HEB
NbN on Si membrane

Mixer manufacturer

KOSMA

Local oscillator technology

Solid-state chain

Quantum-cascade laser

Local oscillator coupling

Beamsplitter (wire grid)

Beam splitter (Mylar foil)

Expected Trec (*)

3000 K (SSB) (goal)

10000 K (SSB) (goal)

(*) For current performance values, please visit the GREAT Fact Sheet page.

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