Agilent/Keysight 11687A

The Keysight 11687A is a two-resistor power splitter engineered for precise signal division across RF and microwave test environments. This three-port device delivers stable, traceable signal distribution from DC to 18.0 GHz, making it ideal for network analyzer applications requiring wideband ratio measurements, source leveling, and accurate signal monitoring. The 11687A maintains excellent tracking performance between output ports and exhibits minimal amplitude and phase variation when load conditions change, ensuring measurement repeatability in demanding laboratory settings.

– Technical Specifications

• Frequency Range: DC to 18.0 GHz
• Impedance: 50 Ohms
• Maximum Input Power: 0.5 W CW
• Insertion Loss: 7 dB (nominal)
• Equivalent Output SWR: 1.33 maximum
• Tracking Between Any Two Ports: 0.20 dB (DC–4 GHz), 0.25 dB (4–8 GHz and 8–18 GHz)
• Amplitude Change: <0.1 percent when one port is open or shorted
• Phase Change: <0.1 ns (5–10 MHz), <0.5 ns (1 MHz), <5.0 ns (100 kHz) when one port is open or shorted
• Connectors: Type-N female (standard); Option 001 provides Type-N male input with Type-N female outputs; Option 002 provides Type-N female input with APC-7 outputs
• Dimensions: 52 mm × 46 mm × 21.3 mm
• Weight: 0.22 kg

– Key Features

• Two-resistor design for stable, low-distortion signal splitting
• Tight tracking tolerance ensures consistent gain ratios across frequency
• Minimal SWR on auxiliary arm for accurate ratio measurements
• Low insertion loss at 7 dB nominal
• Connector flexibility through switchable options

– Typical Applications

• Wideband ratio measurements in scalar network analysis
• External source leveling and signal monitoring
• Precision signal distribution in microwave test systems

– Compatibility & Integration

Recommended for integration with the Keysight 8757 Scalar Network Analyzer. Suited for applications where external source leveling or ratio measurements are critical to measurement integrity.