Agilent/Keysight 11857B

The Agilent/Keysight 11857B is a precision RF adapter that enables connectivity between Type-N female and 7mm (GR900/APC-7) male connectors in test and measurement environments. This 50 Ohm adapter maintains signal integrity across RF and microwave applications by minimizing insertion loss and return loss while delivering repeatable mechanical performance through precision mating mechanisms.

– Technical Specifications

Electrical Characteristics
• Impedance: 50 Ohms
• Frequency Range: DC to 18 GHz
• Insertion Loss: Minimized for signal integrity across the operating band
• Return Loss: Optimized to reduce signal reflections

Connector Interfaces
• Input: Type-N Female
• Output: 7mm (GR900/APC-7) Male
• Mating Mechanism: Precision design for repeatable connections

Physical Construction
• Body Material: Brass with corrosion-resistant plating (nickel or gold)
• Center Contact: Gold-plated high-conductivity material
• Dielectric: Low-loss material to minimize signal degradation
• Durability: Rated for repeated mating cycles in laboratory and production environments

– Key Features

• Direct transition between Type-N female and 7mm male connectors
• Precision-machined mating surfaces ensure consistent electrical performance
• Gold-plated contacts reduce oxidation and maintain low contact resistance
• Designed for reliable operation across DC to 18 GHz
• Mechanical durability supports high-cycle laboratory use

– Typical Applications

• Spectrum analysis systems
• Network analyzer measurements
• Component characterization
• RF signal routing in test setups
• Power meter integration

– Compatibility & Integration

The 11857B interfaces devices equipped with Type-N female connectors to 7mm female connector equipment. It integrates with RF signal generators, spectrum analyzers, network analyzers, and power meters requiring precision impedance matching.