 |
22 GHz |
 |
| |
22 GHz |
|
| Type | Criogenic Dual-Feed |
| Channels | 4 |
| Polarization | LHC-RHC |
| Central frequency (GHz) | 22.3 |
| Noise temperature (K) | 20÷30 |
| Useful RF band (GHz) | 18÷26.5 |
| RF filter width (MHz) | 2300 |
| IF filter width (MHz) | 2000 |
| Instantaneous RF band (GHz) | Tunable |
| LO1 frequency (GHz) | 12-18.5 |
| LO2 frequency (GHz) | 5.9 |
| 1st conversion IF (GHz) | USB 5.85÷8.15 |
| 2nd conversion IF (GHz) | USB 0.1÷2.1
|
Main parameters describing the
K-band dual-feed receiver
In order to make the second
conversion band correspond to a different RF band (sky
frequency range), it is necessary to set the LO1 frequancy
using the formula: freq(OL1) = RF -
6
Where RF is the lowest frequency of the wanted band (to have
the maximum frequency sum 2 GHz).
Picture from above (left) and
below (right) of the K-band dual-feed receiver
