Rohde and Schwarz ZNH-K66 - Wave Ratio and Wave Quantity Option for ZNH Vector Network Analyzers

The R&S ZNH-K29 option enables precise pulse and peak power measurements using the ZNH together with a Rohde & Schwarz wideband power sensor. Field applications benefit from this compact, powerful combination. R&S ZNH offers four fully coherent receivers/channels. This means there are two additional sets of measurement parameters, which have an unambiguous meaning even if the DUT is measured outside its linear range:

• Wave quantities provide the power of any of the transmitted or received waves
• Wave ratios provide the complex ratio of any combination of transmitted or received wave quantities

The wave quantities provide the absolute power and phase at the various receivers of the analyzer ports. Wave quantities are therefore suitable for the following measurement tasks:

• Use of the analyzer as a frequency selective power meter
• Harmonics

A measurement of ratios is particularly suitable for the following test scenarios:

• The test setup or some of its components (e.g. active components or non-reciprocal devices) do not allow system error correction and a complete S-parameter measurement is therefore not possible
• A ratio of two arbitrary waves that is not an element of the S-matrix (e.g. a ratio of the form ai/aj) is needed
• Two-channel, phase-coherent ratio measurement to align two RF channels in amplitude and phase, e.g. aligning phased array antennas