The Keysight E8708A is a radar target simulator purpose-built for automotive radar system development and validation in the 76–81 GHz band. It generates configurable target scenarios with precise range and radar cross-section control, eliminating the need for road testing during ADAS development. The instrument supports continuous range simulation from 4 to 300 m with 0.1 m resolution, or user-defined fixed ranges. Optional Doppler simulation extends capability to target speed characterization from −360 to 360 km/h at 0.1 km/h resolution, replacing external signal generators in many test configurations. Antenna options include single-horn with integrated circulator or dual-horn (Tx/Rx) configurations with 20 or 25 dBi gain. An optional embedded signal analyzer provides average power and occupied bandwidth measurement, while integrated LAN control via Windows 7 Professional 64-bit GUI enables laboratory automation and fleet test coordination.
Technical Specifications
RF Performance
• Frequency range: 76–81 GHz
• Separately optimized bands: 76–77 GHz and 77–81 GHz
• Bandwidth: 4 GHz
• Input power range: −65 dBm to 0 dBm (max 0 dBm at RF flange)
• Phase noise: −90 dBc/Hz @ 10 kHz
• Spurious emission: −35 dBc
RCS Simulation (typical, 25 dBi antenna, −20 dBm input)
• At 4 m: −32 to 29 dBsm
• At 300 m: 43 to 104 dBsm
Range & Doppler
• Simulation range: 4–300 m
• Range resolution: 0.1 m
• Optional Doppler range: −360 to 360 km/h
• Doppler resolution: 0.1 km/h
• Minimum physical distance to DUT: 1 m
• Maximum targets per configuration: 1
Antenna & Hardware
• Single-horn with integrated circulator or dual-horn (Tx/Rx)
• Antenna gain options: 20 dBi or 25 dBi
• IF port: SMA connector
– Key Features
• Fixed or continuous range definition with 0.1 m granularity
• Optional integrated signal analyzer for power and bandwidth measurement
• Integrated Doppler signal generation for speed simulation
• Dual frequency band optimization for 76–77 and 77–81 GHz operation
• Compact 1 m minimum test distance for manufacturing floor integration
– Typical Applications
• ADAS sensor validation (adaptive cruise control, collision warning)
• Automotive radar manufacturing test
• Target scenario simulation without external RF generation
– Compatibility & Integration
• Control: LAN/RJ45 Ethernet
• Operating system: Windows 7 Professional 64-bit
• Software: Graphical user interface with optional analyzer module
• Administrative privileges and license agreement required for installation
