The Rohde & Schwarz ZVA-Z325 is an external millimeter-wave converter that extends compatible vector network analyzers into the 220 GHz to 325 GHz frequency band. Operating as a reflectometer module with integrated directional coupler, frequency multiplier, and harmonic mixers, it enables S-parameter and group delay measurements on high-frequency components and systems. The converter connects directly to Rohde & Schwarz ZVA series analyzers via the R&S®ZVA-K8 control software, supporting bidirectional two-port measurements when paired with four-port VNAs and dual converters.
Technical Specifications
• Frequency Range: 220 GHz to 325 GHz
• Dynamic Range: Typically greater than 80 dB; up to 100 dB with 10 Hz measurement bandwidth; further improvement achievable at 1 Hz bandwidth
• Trace Stability: Less than 0.4 dB and less than 6° phase deviation (max/min hold of transmission factor on direct through connection between matched converters)
• Internal Architecture: Reflectometer module with directional coupler, source frequency multiplier, two harmonic mixers, and manually or electronically adjustable attenuator
• Power Input: 100 V to 240 V AC (±10 % tolerance) via supplied DC adapter
– Key Features
• Two-port bidirectional measurement capability with four-port host VNA and paired converters
• Electronically and manually adjustable output power control
• High dynamic range operation optimized for weak-signal characterization
• Direct VNA control integration eliminates standalone instrumentation
– Compatibility & Integration
Required host analyzers: R&S®ZVA24, R&S®ZVA40, R&S®ZVA50, or R&S®ZVA67. Mandatory options include R&S®ZVA-K8 converter control software and R&S®ZVxx-B16 option for host VNA (R&S®ZVA-B8 recommended for R&S®ZVA-Z110E models). Supplied with DC power adapter, two SMA-connector coaxial cables, waveguide-to-waveguide test port saver, and hex ball driver.
