Radar antenna array R&S®QAT100

MIMOpatchdirectional

Product overview
The R&S®QAT100 is an electronically steerable antenna array that generates horizontal or vertical moving radar targets without mechanical motion. With up to 2×96 individually switchable transmit antennas (with R&S®QAT-B2) it delivers high radial resolution, fast update capability and repeatable target trajectories. Its 4 GHz instantaneous RF bandwidth and support for up to 8 independent simulated objects enable realistic, densely populated scenario simulation. The optional analogue stepped delay line (R&S®QAT-B5) supports short-range echo generation directly in the frontend.

Key facts

• Electronically steerable antenna array
• Flexible and highly scalable system
• High radial resolution and wide field-of-view coverage
• 4 GHz instantaneous RF bandwidth
• Stand-alone short-range echo generation with R&S®QAT-B5

Features & benefits

• Scalable and flexible: Multiple R&S®QAT100 units can be combined to increase the field-of-view (FOV). Multi-instrument setups synchronize via the R&S®AREG800 dynamic radar echo generator to simulate complex ADAS scenarios. Depending on available IF-paths, scenarios with up to 8 independently moving targets can be generated.
• High speed and accuracy: Antenna spacing of 3.7 mm provides high radial resolution. Electronic switching enables simulation of very fast radial velocities with excellent reproducibility and no moving parts.
• Reduced close-range reflections: Small patch antennas and absorber-covered surface lower RCS and reduce sensor noise floor and multipath reflections. Optional shielded absorber kits further reduce interference.
• Ready for complex scenarios: With R&S®QAT-B2 the frontend supports up to 192 individually switchable transmit antennas and up to 8 completely independent targets. R&S®AREG800 automates scenario generation and antenna addressing.
• Short-range echo generation: The optional analogue stepped delay line (R&S®QAT-B5) enables echo simulation from approx. 2.3 m up to ~13 m including 0.5 m airgap; longer delays possible with external delay.
• MIMO radar compatible: R&S®QAT-B21 frontend provides 96 TX/RX pairs with 3.7 mm lateral offset, optimized for next-generation MIMO sensors.

Applications (excerpt)

• Simulation of spatially moving radar objects without mechanical movement
• Complex ADAS and urban scenario simulation with multiple independent targets
• Parametric radar sensor testing including AEB and short-range validation
• MIMO radar testing and range-resolution verification

Technical specifications

• RF frequency range: 76 - 81 GHz
• RF instantaneous bandwidth: 4 GHz
• IF bandwidth: 1 GHz (corresponds to 4 GHz RF BW)
• IF frequency range: 1.1 - 2.1 GHz
• Supported object types: dynamic and static
• Maximum number of IF paths: up to 4 independent angular directions (standard R&S®QAT100); up to 8 with R&S®QAT-B2 option
• Simulated distance (including 0.5 m airgap; requires R&S®QAT-B5): 2.3 - 12.9 m
• Dynamic range: 60 dB
• Antenna configuration: R&S®QAT-B11 frontend = 5 RX / 96 TX; R&S®QAT-B11 + QAT-B2 = 10 RX / 192 TX; R&S®QAT-B21 frontend = 96 RX / 96 TX
• Polarization: 45 degrees
• Antenna lateral spacing: 3.7 mm