Keysight (Agilent) 87104A Multiport Coaxial Switch, DC to 4 GHz, SP4T

The Keysight (Agilent) 87104A is a Single Pole, Four Throw (SP4T) multiport coaxial switch engineered for RF and microwave signal routing from DC to 4 GHz. This 50 Ohm switch delivers high isolation and low insertion loss, making it ideal for automated test equipment, signal matrix configurations, and precision component testing where signal integrity is critical.

– Technical Specifications

• Configuration: Single Pole, Four Throw (SP4T)
• Frequency Range: DC to 4 GHz
• Impedance: 50 Ohms
• Insertion Loss: 70 dB at 4 GHz
• VSWR: < 1.5:1 at 4 GHz
• RF Connectors: Type N Female
• Actuation: Latching or Non-latching
• Control Method: External logic-level control signals

– Key Features

• High isolation performance exceeds 70 dB at maximum frequency
• Low insertion loss specification maintains signal fidelity across the passband
• Metal chassis construction supports both rack and benchtop deployment
• Impedance-matched 50 Ohm ports minimize reflections
• Switching speed and RF power handling vary by unit configuration and control voltage

– Typical Applications

• Automated test equipment (ATE) systems
• RF and microwave signal distribution networks
• Component and subsystem characterization
• Matrix switching configurations for multi-signal routing
• High-frequency test system integration

– Compatibility & Integration

The 87104A integrates into RF and microwave test platforms using standard logic-level control signals or dedicated switch drivers. Type N Female connectors provide direct interface compatibility with industry-standard RF instrumentation. Specific control voltage, logic levels, switching timing, and maximum RF power ratings are unit-dependent and require verification against your particular configuration.