- The R&S NRP150T thermal power probe from Rohde & Schwarz uses a new 0.80 mm coaxial connector to provide continuous coverage from DC to 150 GHz.
- This solution offers measurement capabilities in future automotive radar bands and aims to simplify the validation of RF devices operating in the millimeter wave range.
With the NRP150T model, Rohde & Schwarz extends the frequency range covered by the NRPxT family of power probes to 150 GHz. This power sensor covers all usable bands without frequency segmentation. This continuity stems from the adoption of a new-generation 0.80 mm coaxial connector capable of transferring a signal up to 150 GHz with controlled losses. Competitive power probes typically rely on 1.0 mm or 1.35 mm connectors, which impose a limitation between 110 and 120 GHz depending on the model, restricting the measurement of emerging applications beyond the D-Band.
Meeting automotive radar requirements
The launch of this power sensor comes as the ecosystem of advanced driver assistance systems (ADAS) and autonomous driving (AD) suppliers works with standards bodies to extend radar bands to frequencies as high as 148.5 GHz. A sensor covering the entire range can be used to evaluate the power of experimental radar modules and associated RF chains. The sensor can also be used in sectors involved in very high frequency exploration or communication, such as inter-satellite links or radio astronomy.
Improved measurement rate
The probe performs up to 500 measurements per second. Combined with its unique frequency range, this rate allows continuous scanning across the entire frequency band, speeding up the validation or calibration process for vector network analyzers and other RF instruments. The ability to cover the entire range without changing accessories reduces interruptions and measurement uncertainties associated with reconnections.
Stability and resistance to environmental variations
The NRP150T series power probe offers a dynamic range from –35 to +20 dBm and operates between 0°C and 50°C, incorporating internal compensation for thermal fluctuations. Its drift coefficient is designed to maintain measurement repeatability during temperature variations or in the presence of out-of-band signals. With a maximum VSWR of 1.7, it ensures correct tuning to limit reflections in the test chain.
Metrological traceability
Like the rest of the NRPxT series, this power probe benefits from NMI traceability, a necessary condition for commercial operation in the relevant bands. Cooperation between Rohde & Schwarz, the PTB (Physikalisch-Technische-Bundesanstalt) and several European institutes has made it possible to establish this traceability up to 170 GHz, thus including the 150 GHz of the NRP150T probe.
