Press releases

Munich 1월 28, 2021

Automotive radome tester enhancement from Rohde & Schwarz brings new level of precision to material reflection measurements

Rohde & Schwarz has enhanced its R&S QAR quality automotive radome tester, a tailored solution for radar integration testing to analyze and evaluate the radar compatibility of radomes and bumpers. With the new R&S QAR-K50 single-cluster measurement software, OEMs and tier 1 suppliers are able to achieve measurement results very close to those obtained with a vector network analyzer (VNA) and a quasi-optical (QO) setup, but in a nondestructive and 2-dimensional way. In addition, users benefit from the intuitive R&S QAR operating concept.

The R&S QAR-K50 software detects the correct measurement area by itself and provides optical feedback to the operator. (Image: Rohde & Schwarz)
The R&S QAR-K50 software detects the correct measurement area by itself and provides optical feedback to the operator. (Image: Rohde & Schwarz)

The R&S QAR is a mmWave imaging system for demanding radome and bumper material testing and validation. Thanks to its outstanding performance, speed, quality and intuitive operation, it is the perfect tool for applications ranging from development and production to verification of radome material and integration of 76 GHz to 81 GHz radars.

The high spatial resolution comes at the cost of having a larger spread in terms of incident angles. A typical radar sensor has a certain field of view, e.g. +/-10° for full-range (FRR) and +/-60° for short-range radars (SRR). Derived from material characterization techniques, the reflection parameters of radomes are mainly defined for perpendicular incident angles as these parameters can be measured using VNAs. The R&S QAR-K50 software option addresses this topic.

Comparing the results delivered by the R&S QAR to those measured with a standard vector network analyzer (VNA) and a quasi-optical (QO) setup, some deviations can be seen and explained with the larger aperture used by the R&S QAR.

This is where the R&S QAR-K50 software option comes into play. It automatically detects the highest reflection from the material sample and averages over the test region. The mean value for the reflection area is determined and shown to the user as the measurement result within less than 7 seconds. This value matches very well the S11 and S22 reflection measurement results of a VNA.

The measurements made with VNA and QO setups during R&D can now be directly compared to the R&S QAR measurements. Still utilizing microwave imaging, but with a smaller antenna aperture, makes the setup less sensitive to positioning errors and more suitable for production environments compared to VNA setups. The R&S QAR-K50 software detects the correct measurement area by itself and provides optical feedback to the operator in case the positioning of the samples is slightly out of tolerance. The R&S QAR now combines its high-resolution image used for homogeneity analysis (R&S QAR-K10 software) with a robust and easy-to-use reflection measurement. The measurement values obtained with the R&S QAR-K50 software option are directly comparable to the results delivered by VNAs in QO setups.

The R&S QAR-K50 software option for single-cluster measurements can be installed on all Windows 10 instruments with most recent firmware using keycode activation. It is now available from Rohde & Schwarz.

Press & media contact

Patrizia Muehlbauer
PR Manager Products & Standard Systems
(+49 89) 4129-13 818
press@rohde-schwarz.com

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Rohde & Schwarz

Rohde & Schwarz is striving for a safer and connected world with its Test & Measurement, Technology Systems and Networks & Cybersecurity Divisions. For 90 years, the global technology group has pushed technical boundaries with developments in cutting-edge technologies. The company's leading-edge products and solutions empower industrial, regulatory and government customers to attain technological and digital sovereignty. The privately owned, Munich based company can act independently, long-term and sustainably. Rohde & Schwarz generated net revenue of EUR 2.78 billion in the 2022/2023 fiscal year (July to June). On June 30, 2023, Rohde & Schwarz had around 13,800 employees worldwide.


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Automotive test solutions

As a leading global manufacturer of test and measurement equipment, Rohde & Schwarz offers expert know-how for all phases of automotive development – from predevelopment to R&D to production. OEMs, Tier 1s and chip suppliers benefit from the company’s reliable solutions for high frequency, high bandwidth and high-speed test challenges. Rohde & Schwarz is the market leader for testing radar sensors, automotive Ethernet conformance, connectivity (5G, V2X, eCall, GNSS), infotainment, EMI precompliance and EMC. The company also offers outstanding solutions for board level tests (ICT/FCT) during ECU production. All of these test solutions will ensure maximum efficiency in compliance with the highest quality standards, assuring that various automotive components function correctly, coexist successfully and communicate with the outside world without errors.

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