NSI-MI Technologies

High Power Rotators are engineered to deliver an unmatched combination of torque, speed, and durability, enabling precise positioning for large payloads in demanding RF, radar, and industrial environments. 

 The Vector Digital Receiver is a high-speed, precision measurement instrument designed to directly acquire digital data from modern antennas and RF systems.

This paper addresses the challenges of nearfield antenna pattern measurement in systems utilizing digital antennas and streaming receivers. Key issues such as phase coherence, synchronization, and standardized interfaces are explored. Solutions including reference signal sampling, real-time triggering, and integration of the VITA 49.2 protocol are proposed to enable accurate, efficient, and scalable measurement of digitized RF signals.

The Precision Axis Controller (ELE-PAC) is the latest high-performance position controller from NSI-MI. The modular and flexible design has been specially optimized to support all types and sizes of measurement systems. 

Balancing the performance and cost of antenna measurement RF sub-systems is an important part of the design process. Small or low frequency systems often use a centrally located vector network analyzer without any remotely installed RF electronics. As these systems get larger or the frequency increases, the need to locate RF components remotely to maximize the available dynamic range grows.

Phased array, and more specifically Active Electronically Scanned Array (AESA) technology has been in use for several decades. This type of array uses active components to control the phase and amplitude weighting of individual elements or groups of elements to modify the array’s aperture distribution.

This broadband ridged antenna is the perfect choice for spherical near-field measurements and far-field range illumination. With its wide frequency bandwidth, it can replace several standard Open-Ended Waveguide probes or horns.

Our range of standard gain horn antennas are used in antenna test range applications and have been designed to deliver accurate gain reference and reliable antenna gain measurements.