R&S ZNB43 vector network analyser

Rohde & Schwarz’s R&S ZNB vector network analyser (VNA) family is useful for both development and production network analysis applications, with features such as ease of operation and a measurement performance which combines high speed and dynamic range with temperature stability. The R&S ZNB43 adds a frequency range of 100 kHz to 43.5 GHz.

The product is available in 2- and 4-port models, with two connector types (either 2.4 or 2.92 mm). It optionally offers an extended power range and a second internal source. The device is suitable for characterisation of passive devices such as filters, couplers and switches. When equipped with the second internal source, it becomes a versatile instrument for measurements of active devices such as mixers and amplifiers.

Higher frequencies, faster clock rates and more precise specifications all demand more accurate device characterisation. In particular for the higher microwave frequencies, de-embedding the test fixture from the device under test is increasingly important. For the VNA, a range of software tools for de-embedding in line with IEEE 370 is now available as fully integrated options.

With any network analyser, no matter how well a test set-up has been calibrated, there will still be a residual measurement uncertainty which will vary according to settings such as the power level for the current test. Knowing the actual uncertainty under given test conditions is crucial. The R&S ZNB allows users to keep track of measurement uncertainty in real time, with integrated software options.

The family also supports inline calibration units which remain connected to the device under test throughout the test period. Inline calibration is essential for tests in a thermal chamber, eg, on satellites or satellite components, or in multiport set-ups with large numbers of ports. Instead of a time-consuming reconnection of DUT cables, recalibration is reduced to just pressing a button on the VNA.