Compact
RF Scene Generators™ Compact
RF Scene Generators™

Compact RF Scene Generators™

Compact RF Scene Generators™

 

Features
  • Very fast, accurate vectoring of the plane wave to generate single target scenarios
  • Compact size allows system to be used where space is limited
  • Entire self-contained system is portable and may be moved to support both serial production line testing and new product development
  • A cost-effective means of RF Scene Generator™ for limited field of view applications
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What is the Compact RF Scene Generator™?

The Compact RF Scene Generator™ provides a user-specified RF scene with a target signal arriving at the DUT from a series of aspect angles. The DUT can mount on a flight motion simulator (FMS) to coordinate motion of the sensor with each scene. The entire system is designed to fit inside a relatively small test chamber, thus making it portable for use in both design and production applications.

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Components of Compact RF Scene Generator™

Anechoic Chamber

The chamber’s shielding level can be tailored to meet specific customer requirements. Purpose‑built to house the compact RFSG system, it delivers a true anechoic environment that ensures repeatable, tightly controlled test conditions. Integrated fire suppression and HVAC interfaces support safe, reliable, and continuous operation.

Shielded Enclosure 
RF Scene Generator Reflector 
Reflector

The reflector is a precision-machined, offset-fed aluminum reflector with rolled edges, designed to create a controlled quiet zone for compact range testing, offering high structural integrity and RF performance. Operational frequency range from 8.2 to 110 GH.

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Feed Carousel Positioner

The feed carousel is a multi-position, remotely controlled feed changer designed for Ka/X band antennas, future expansion, and optical alignment, with integrated RF and control connectivity for user systems.

RF Scene Generator Feeds 
Motion Axes 
Motion Axes

The system provides precise azimuth and elevation control, automated feed switching across multiple bands, integration for polarization control, and an extra axis for optical alignment of the customer's device DUT.

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Position Control

The subsystem is a centralized, modular control system that uses the next generation NSI-MI position controllers and trigger adapter to manage all four RFSG axes with precision, remote capability, and integrated servo amplification.

The system provides remote, precise, and safe multi-axis control with advanced filtering, real-time feedback, and robust protection mechanisms.

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Motion Axis Controller 
Dual Polarized Feeds 
Feed Assemblies

The feed assemblies are high-performance dual-polarized antennas for X and Ka bands, offering excellent polarization purity, broad beamwidth, and stable performance across frequencies.

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Fire Suppression

A fully integrated, pre‑tested fire suppression system is available for fast, reliable protection. The system features a single‑interlock pre‑action design with solenoid and deluge valves, delivering rapid response while meeting stringent safety and compliance standards. NSI‑MI partners closely with customers to evaluate requirements and engineer a fire suppression solution optimized for each unique application.

Fire Suppression 
Feed positioner
RF Subsystem with Rotary Joints and Cables

A fully integrated RF subsystem, enabling fast and accurate data acquisition to maximize range efficiency. The system includes scanner and range RF cables, rotary joints, RF components and devices, software drivers, and advanced data acquisition and plotting software. Designed for compatibility with both NSI-MI instrumentation—as well as many third-party systems—this subsystem ensures seamless operation and high-performance measurements in antenna testing environments.

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Data Acquisition and Analysis Workstation

NSI-MI’s Data Acquisition and Analysis Workstation creates and supports productive test environments with streamlined, fully automated systems for antenna, radome, and radar cross-section measurements. From setup to analysis and reporting, it delivers complete control and high-efficiency data handling for microwave and antenna testing. The workstation includes both hardware and software components, featuring NSI-MI’s A4 software for fast, reliable data acquisition, processing, and plotting—ensuring consistent performance across a wide range of measurement applications.

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Feed positioner
  • Example Specifications
  • Applications
Frequency Range 8.2 – 12.4 GHz (X-Band)
26.5 – 40.0 GHz (Ka-Band)
QZ Depth 8 Inches per Zone, 24 inches total
QZ Diameter (Back) 15 Inches
QZ Diameter (Center) 13 Inches
QZ Diameter (Front) 11 Inches
Amplitude Taper ± 0.6 dB
Amplitude Ripple ± 0.4 dB (X-Band), ± 0.3 dB (Ka-Band)
Phase Variation ±3 deg (X-Band & Ka-Band)
Elevation Travel Range ±5.5 deg
Azimuth Travel Range ±5.5 deg
Feed Carousel Travel Range -90 to +270 deg
  • Radar development & validation
  • AESA/phased-array performance testing
  • HITL and system-level testing
  • Automotive radar / ADAS validation
  • Electronic warfare & threat simulation
  • Production calibration & QA
  • Tracking algorithm development