Technical information:
| Central frequency |
2.3 GHz |
| Bandwidth |
0.4 GHz |
| Band pass Filter |
2.1 - 2.5 GHz |
| Front end amplifier |
НЕМТ |
| Physical temperature |
305 K |
| System noise temperature |
95 K |
Realized sensitivity
(  = 1 s ) |
8 mK |
| Design |
Noise Added Radiometer |
| Operating mode |
Single - beam mode
a cooled reference |
| Polarization |
Left Circular Polarization ( LCP )
or Right Circular Polarization ( RCP ) |
| Feed |
Three-frequency feed with
matched phase center
( the same for 31 and 49 cm ) |
| Calibration |
Noise generator |
Simplified block-diagram of the radiometer
- PF - primary feed,
- DC1, DC2 - directional couplers,
- GM - p-i-n diode gain modulator,
- BPF - band-pass filter,
- D - square law detector,
- NG1 - noise generator for calibration,
- NG2 - balance noise generator,
- A1 - NG2 noise power control attenuator,
- LFA - low frequency amplifier.
|
= 13 cm