Agilent/Keysight P9400A

The Agilent/Keysight P9400A is a solid-state PIN diode transfer switch engineered for RF and microwave switching applications demanding high isolation, speed, and reliability. Operating across 100 MHz to 8 GHz, this device delivers sub-200 nanosecond switching speed and port-to-port isolation exceeding 80 dB, minimizing crosstalk while optimizing system dynamic range. The 50 ohm transfer switch accommodates multiple switching configurations—including drop-out, SPDT, signal reversal, and active device bypass—making it suitable for test instrumentation, communications, radar systems, and RF switch matrices.

– Technical Specifications

• Frequency Range: 100 MHz to 8 GHz
• Switching Speed: 80 dB
• Insertion Loss: Low, optimized for dynamic range
• Return Loss: Outstanding performance
• Impedance: 50 ohm
• Connector Type: 3.5 mm SMA
• Control Interface: TTL-compatible integrated driver

– Key Features

• Ultra-fast switching under 200 nanoseconds enables rapid signal routing
• High isolation exceeding 80 dB reduces unwanted coupling between paths
• Low insertion loss preserves signal integrity across the operating band
• TTL-compatible control simplifies integration with standard digital logic
• Broad frequency coverage from 100 MHz to 8 GHz supports diverse test scenarios
• Multiple switching configurations accommodate drop-out, SPDT, signal reversal, and bypass topologies

– Typical Applications

• Network analyzer and spectrum analyzer testing of RF components
• Device characterization of amplifiers, mixers, and passive networks
• Test system signal routing with minimal path loss and crosstalk
• Radar and communications switching matrices requiring high-speed operation
• Active device bypass and signal path selection in measurement setups

– Compatibility & Integration

The P9400A integrates into RF and microwave test systems via 3.5 mm SMA connectors and accepts TTL-level control signals. Its 50 ohm impedance matches standard RF instrumentation and test equipment, allowing direct integration into existing network analyzer, spectrum analyzer, and custom measurement platforms.