Radiometer Front-Ends
Standard Features:- 18 to 110 GHz coverage
- Low DSB noise figure
- Single or dual input channels
- 30 to 60 dB RF to IF gain
- 110 K typ noise injection
- Down conversion and direct-detect systems
Spacek Labs Radiometer Front-ends are available in frequencies from 18 to 110 GHz. Our Radiometers are offered in bandwidths spanning a frequency range from less than 1 GHz to 10 GHz. We typically use a dual junction isolator at the input followed by a 20 dB cross-guide coupler. A noise source requiring about 15 mA of bias is on the coupled arm. This assembly feeds one of our low noise receivers. While we offer a lineup of standard Radiometer designs, we more often are designing and building systems to meet our customers needs whether those needs are to fit their electrical, mechanical or pricing requirements.
| Model Number | Input Freq. (GHz) | RF to IF Gain (dB) | Application | Noise Figure | Connectors |
|---|---|---|---|---|---|
| R20.7-U | 20.7 | 60 | Water Vapor | 3.5 | WR-42 |
| R20.7-U | 20.7 | 60 | Water Vapor | 3.5 | WR-42 |
| R23.8-U | 23.8 | 60 | Water Vapor | 3.5 | WR-42 |
| R31.4-U | 31.4 | 60 | Water Vapor | 3.5 | WR-28 |
| R55-U | 51 - 59 | 60 | Temperature Profiler | 5 | WR-15 |
| R89-U | 88 - 90 | 60 | Water Vapor | 6 | WR-10 |