The HP/Agilent 11852B is a 50 Ohm to 75 Ohm impedance conversion adapter designed for RF and microwave measurement and signal transmission applications. It bridges 50 Ohm and 75 Ohm system environments using Type-N connectors, combining a Type-N female (50 Ohm) port with a Type-N male (75 Ohm) port. Operating across DC to 3 GHz, this minimum loss pad maintains signal integrity during impedance transformation with carefully controlled insertion loss characteristics.
## Technical Specifications
• Frequency Range: DC to 3 GHz
• Impedance Conversion: 50 Ohm to 75 Ohm
• Connector Configuration: Type-N Female (50 Ohm) to Type-N Male (75 Ohm)
• Typical Insertion Loss: 5.7 dB
• Return Loss: > 27 dB
• Electrical Length: 50.2 mm (1.98 in)
• Overall Length: 60.1 mm (2.37 in)
• Diameter: 22.0 mm (0.87 in)
• Reference Plane to Reference Plane Length (nominal): 50.2 mm (1.98 in)
## Key Features
• Minimum loss design optimized for impedance matching
• High return loss performance exceeding 27 dB
• Compact form factor with 22.0 mm diameter body
• Passive construction—no power supply required
• Alternative configuration available (Option 004): Type-N male (50 Ohm) to Type-N female (75 Ohm)
## Typical Applications
• Cable and antenna impedance matching
• Network analyzer port adaptation
• RF test fixture interconnection
• Broadcast and telecommunications signal routing
• Measurement system compatibility solutions
## Compatibility & Integration
The standard 11852B connects directly to 50 Ohm Type-N female equipment on one end and 75 Ohm Type-N male systems on the other. Option 004 reverses both connector genders for alternate system configurations. Electrical length of 50.2 mm should be considered in phase-critical RF applications. User and service manuals are available for technical reference and maintenance.
