The NBS-90 is a cryogenic noise standard for frequency ranges 60.0 to 90.0 GHz, using a WR-12 waveguide. It provides an output noise temperature of 76.00 K with an accuracy of +0.33/-0.56 K at 628 mmHg and 293 K. The device incorporates a precision waveguide horn monitoring a blackbody in a liquid nitrogen bath, with an automatic nitrogen purge to eliminate the need for helium equipment. It achieves two to three times better accuracy than conventional standards due to lower insertion loss and room-temperature reflections. The system requires a precision barometer and thermometer for accurate measurements and supports integration with ambient temperature terminations and low-loss switches. Accessories include a wooden horn case, hoses, couplings, and cables.
The NBS-Series consists of calibration standards based on the primary fundamental physic constants of thermal noise and blackbody radiation. This provides the ultimate accuracy when measuring extremely low noise figures (noise temperatures). Simple, and versatile to use, the NBS-Series is an ideal solution for noise source calibrations, radiometer test references and low noise amplifier tests.
| Maury Microwave | |
|---|---|
| Product Category | Noise Standards |
| Product Number | NBS-90 |
| Product Name | Cryogenic Noise Standards |
