Agilent/Keysight 85108A

The Agilent/Keysight 85108A is a pulsed-RF network analyzer system built around the Agilent 8510C with pulsed-RF measurement option (Option 008). It delivers vector S-parameter analysis and pulse profile characterization for high-power and pulsed-RF device testing across IF, RF, and microwave frequencies. The system handles CW power up to 20 W and pulsed device output power up to 100 W, enabling accurate measurement of components under realistic pulsed operating conditions.

This platform supports spectral analysis, noise figure measurements, and load pull characterization without compromising raw system performance. The pulsed measurement engine achieves 60 dB dynamic range at 20 GHz independent of duty cycle, with an equivalent bandwidth of 1.5 MHz. Pulse widths down to 1 microsecond are evaluated, making it suitable for on-wafer and in-fixture device assessment at low duty cycles.

The system includes an internal pulse generator or accepts external pulse generator input, with flexible external-trigger capability for asynchronous data acquisition control.

Technical Specifications

• Frequency range: 2.00 GHz to 20.00 GHz (optional configuration to 50 GHz)


• CW power handling: up to 20 W


• Pulsed device output power: up to 100 W


• Pulsed dynamic range: 60 dB at 20 GHz, duty-cycle independent


• CW dynamic range: 75 dB at 20 GHz (expandable to >62 dB at 50 GHz)


• Equivalent bandwidth (pulsed): 1.5 MHz


• Minimum pulse width evaluation: 1 microsecond


• Interface: GPIB

Key Features

• Pulse profile network analysis for dynamic RF characterization


• Internal pulse generator with external trigger input for measurement synchronization


• High-power measurement capability under constant-power and pulsed-power conditions


• Spectral analysis without performance degradation


• Load pull measurement support


• Factory-integrated system configurations available

Typical Applications

• Pulsed RF device characterization


• High-power component testing


• On-wafer and in-fixture device measurements


• Microwave and RF component assessment

Compatibility & Integration Built on the Agilent 8510C architecture with Option 008 pulsed-RF measurement capability. Compatible with Agilent 85110A test set for high-power handling and direct RF access. The 50 GHz configuration utilizes a 20 GHz synthesized sweeper as LO source in fundamental or third-harmonic mode.