Agilent/Keysight 11930A

The Agilent/Keysight 11930A is a power limiter that protects RF and microwave instrumentation by clamping input power levels to safe thresholds. Operating from DC to 6 GHz, this 50 ohm device uses an APC-7 connector and handles continuous input power up to 3 watts or pulsed power to 6 watts (30 ms pulse width, 10% duty cycle). The limiter engages at approximately 30 dBm, safeguarding network analyzers and similar equipment from overpower conditions.

– Technical Specifications

• Frequency Range: DC to 6 GHz
• Impedance: 50 ohm
• Connector: APC-7 (7-mm)
• Maximum DC Voltage: 30 V
• Insertion Loss: 1.0 dB (DC to 3 GHz); 1.5 dB (3 GHz to 6 GHz)
• Return Loss: 22 dB (30 kHz to 3 GHz); 20 dB (3 GHz to 6 GHz)
• Limiting Threshold: 30 dBm (typical)

– Key Features

• Handles 3 watts continuous input power without degradation
• Accepts 6 watts peak power in pulse mode (30 ms pulse, 10% duty cycle)
• Designed failure mode: open circuit or short to ground, preventing instrument damage during overstress
• Low insertion loss across the operating band enables accurate signal transmission
• High return loss maintains impedance matching and minimizes reflections

– Typical Applications

Input protection for network analyzers and RF test instrumentation operating across microwave frequencies. Suitable for bench and production test environments handling both continuous and pulsed RF signals.

– Compatibility & Integration

APC-7 connector interface provides direct integration with equipment featuring this standard connector type. The 50 ohm impedance matches standard RF system architectures from baseband through 6 GHz.