Mixer measurements
Second internal source for quick and easy conversion loss measurements
The R&S®ZVA four-port model provides a second independent source; therefore, conversion loss measurements on mixers can be performed without an external generator. The R&S®ZVA receivers feature very good power-handling capability and low phase noise, which enables high-quality intermodulation measurements requiring only a minimum of external components.
Simultaneous display of conversion loss as well as RF, IF and LO matching
A four-port R&S®ZVA can measure all transmission and reflection parameters of mixers without the DUT having to be reconnected. The RF and IF matching can be measured with the LO switched on.
Conversion gain and intermodulation measurements on mixers at high speed and with wide dynamic range
The four-port R&S®ZVA requires only one additional external source to perform intermodulation measurements on mixers. The external source is controlled via the analyzer's LAN or IEC/IEEE bus interface. Using the frequency conversion option (R&S®ZVA-K4), you can display a mixer's matching, conversion gain, isolation, group delay, and intermodulation products versus frequency and power.
Intermodulation products of a frontend
Scalar network analysis (e.g. on mixers with unknown internal LO)
One or more power meters of the R&S®nrp series can be directly connected to the R&S®ZVA via the USB interface. The power meters are treated by the R&S®ZVA like additional test ports. The R&S®ZVA processes the measured values and displays them as a trace or traces versus frequency or power. This allows measurements on frequency-converting DUTs to be performed without access to, or knowledge of, the DUT's internal LO, in the same way as with a scalar network analyzer.
