QN Series Coaxial Connectors: High Performance RF Interface Solutions

1. Product Definition & Standardization

QN connectors are precision coaxial interfaces developed for military-grade RF applications, compliant with MIL-STD-348B standards. Characterized by their quick-lock coupling mechanism (patented QN-Lock™ system), these connectors provide reliable 50Ω impedance matching across 0-18GHz frequency ranges, with variants supporting up to 40GHz operation.

2. Key Technical Features

• Mechanical Design:

• • Triple-start threaded coupling (30° rotation lock)
  • Corrosion-resistant beryllium copper contacts with 3μm gold plating
  • PTFE dielectric (ε=2.1) with -65°C to +165°C operational range

• Electrical Performance:

• • Parameter Specification VSWR≤1.25@18GHz
  • Insertion Loss0.15dB/connector@6GHzRF
  • Leakage<-90dB

3. Comparative Advantages

• vs. N-Type: 30% faster mating, 2× vibration resistance
• vs. SMA: 5× mating cycles (5000+ cycles)
• Unique self-cleaning contact design prevents fretting corrosion

4. Military & Commercial Applications

• Defense Systems: Radar array interconnects (MIL-DTL-22992 compliant)
• Aerospace: Satellite payload interfaces (ESA ECSS-Q-ST-70-08C qualified)
• 5G Infrastructure: mmWave small cell backhaul connections

5. Installation Guidelines

• Torque specification: 12 in-lbs ±10%
• Recommended cable types: RG-402/U (semi-rigid), LMR-400 (flexible)
• IP67 sealing achievable with optional conductive elastomer gasket

6. Industry Trends

Recent IEEE 287.1-2024 revisions recommend QN connectors for phase-sensitive array applications due to their ≤0.5° phase deviation performance across 10,000 thermal cycles.