The Anritsu 34KFKF50 RF Interface is a K-type (2.92 mm) coaxial connector engineered for precision signal transmission across DC to 40 GHz and extended performance to 43.5 GHz. Constructed from heat-treated beryllium copper with gold plating, this 50 Ohm interface delivers VSWR of 1.33 max and insertion loss of 0.15 dB max to 43.5 GHz, ensuring minimal signal degradation in demanding RF and microwave test environments. The connector supports mode-free performance and is traceable to national standards laboratories—critical for uncertainty budgeting in vector network analysis and precision measurement applications.
Technical Specifications
• Connector Type: K-type (2.92 mm)
• Impedance: 50 Ohms
• Frequency Range: DC to 40 GHz; DC to 43.5 GHz (Extended-K series)
• VSWR: 1.33 max to 43.5 GHz
• Insertion Loss: 0.15 dB max to 43.5 GHz
• Body Material: Beryllium copper (gold-plated)
• Center Conductor Material: Heat-treated beryllium copper
• Operating Temperature: −55 °C to 125 °C
• Mating Cycles: >500
• RoHS Compliant: Yes
– Key Features
• Mode-free performance to 43.5 GHz (Extended-K series)
• Traceability to national standards laboratories
• Mechanical and electrical compatibility with SMA and 3.5 mm connectors
• Straight geometry with configurable mounting (2-hole flange or sparkplug)
• Gold finish for corrosion resistance and reliable mating
– Typical Applications
• Vector network analysis (VNA) test benches
• 5G deployment and backhaul characterization
• Satellite communications systems
• Millimeter-wave (mmWave) measurements
• RF measurement and high-speed digital characterization
– Compatibility & Integration
The K-type interface mates mechanically and electrically with SMA and 3.5 mm connectors; exercise caution when interfacing with SMA to avoid damage to precision components. Extended-K connectors use 2.92 mm geometry for optimal performance at microwave frequencies.


















