The NBS-26 is a primary noise standard for calibrating noise figures in the 18.0 to 26.5 GHz frequency range, using a WR-42 waveguide. It provides an output noise temperature of 75.97 K with an accuracy of +0.24/-0.34 K at 628 mmHg and 293 K. The device consists of a cryogenic blackbody cavity cooled by liquid nitrogen and a precision horn operating at room temperature, reducing insertion loss and reflection uncertainty. It features an automatic nitrogen purge to eliminate the need for helium equipment and is designed for use in noise source calibration, radiometer verification, and low noise amplifier testing. 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-26 |
| Product Name | Cryogenic Noise Standards |
