Discover a wide selection of Grid Simulators

NSI-MI offers several Stationary Spherical Near-Field Solutions to address some special cases where a DUT cannot be moved during measurement. These include many millimeter wave and sub-millimeter wave on-chip antennas excited using probing stations and active phased arrays with too many control, RF and coolant lines to manage on a conventional SNF system. These systems support measurements from 1 GHz up to 330 GHz and beyond, depending on the chosen model.

Various models are available, each optimized for a particular class of antennas and application. The selection of the ideal Stationary SNF system will depend on the size of your DUT, the operating frequency, and desired mounting orientation. Learn more about our Stationary Spherical Near-Field Solutions below.

With our Scientific Atlanta legacy, NSI-MI were the pioneers of innovative antenna development for precision antenna test and measurement applications. Our antennas are designed and manufactured in our factory by our experienced staff of antenna design engineers whom are the best in the industry.

Today’s military and commercial aircraft carry a vast array of antennas for specialized and vital functions. Communications, navigation, weather and fire control antennas must perform as specified to meet safety and mission requirements. Radomes must conceal and protect antennas without interfering with or degrading transmit/receive capabilities. As the leading provider of radome measurement systems for both military and commercial applications, our comprehensive range of products is designed to meet or exceed the requirements for radome testing, ensuring their performance and reliability.

Efficient far-field testing in a controlled compact environment.

Versatile Quiet Zone Sizes
Broad Frequency Coverage
Superior Quiet Zone Performance
Robust Payload Capacity
Precision Engineering
Multi-Application Capability
Flexible System Enhancements

Roll over azimuth scanner systems are ideal systems for measuring medium and low gain antennas up to 3 m (118 in.) in diameter and are ideally suited to perform cellular and PCS band base-station antenna testing.

The CRS-PORT-18-0.5 is a pre-configured portable compact measurement system ideal for measuring medium to high gain antennas from 18.0–110.0 GHz with antenna-under-test (AUT) payloads of up to 0.5 m (19.7 in.) in diameter and 75 kg (165 lb). The base, reflector, and positioning system come pre-assembled, aligned, and integrated with the chamber, for ultimate convenience and cost/time savings.

18.0 to 110.0 GHz measurements
Full 3D pattern characterization in real-time
High 75 kg (165 lb) AUT payload capacity
Conveniently swappable transmit/receive modes
Powerful plotting and antenna analysis software
Easily configurable for mmWave measurements

The Overhead Theta Axis system is ideal for measuring medium and low gain vertically oriented antennas up to 7.3 m (24 ft) in diameter. The DUT mounts to a lower azimuth stage, while a probe moves along a fixed arch or moving gantry to generate a partial sphere around the DUT. This system type reduces the gravitational sensitivities observed with the more common Roll over Azimuth geometry. This implementation also has the added benefit of greatly simplifying the challenges associated with cable management since cabling to the DUT only needs to pass through a single rotary axis.

The Outdoor Far-Field system supplies everything you need to begin testing of antennas with customer supplied RF equipment and source horn (Note, NSI can also supply these items if so desired). The system can interface to a variety of RF equipment, such as the Keysight PNA, Keysight ENA, to the NSI-MI high performance RF equipment and more.

If accelerated delivery schedules or budget constraints are driving your purchasing decision for an RF measurement testing solution, we offer economical, pre-engineered systems suitable for most applications and testing needs. Our turnkey solutions are designed for straightforward assembly in either an anechoic chamber or open facility, depending on the type of system and test application.

The CNF method offers the ability to acquire data over a vertical cylinder surrounding the DUT. This type of system offers superior angular coverage than the PNF geometry but does not offer full sphere coverage like the SNF approach. CNF is well-suited to testing fan beam antennas, or to measure the backlobes of antennas. Care must be taken to ensure that minimal radiation is directed toward the open top and bottom of the cylinder.

An indoor far-field anechoic chamber has the same basic design criteria as an outdoor range except that the surfaces of the room are covered with RF absorbing material. Testing indoors offers many advantages to conventional outdoor ranges including improved security, avoiding unwanted surveillance and improved productivity due to less time lost because of weather and other environmentally related factors.

This family of products combines to enable highly efficient range operations, data management, data presentation and analysis. NSI-MI has created an open architecture solution designed for use with advanced microwave measurement systems, prior generation NSI-MI Technologies instrumentation or many third-party instruments and position control systems.

- Exceptionally high measurement accuracy of 0.015 % rdg. + 0.01 % rng.
- DualPath architecture for narrowband and broadband measurements
- Four different power channel types and a process signal interface (PSI)
- Tailored to your application: flexible scripting tool and custom menu
- Harmonics and interharmonics up to 2000th order

The RAMS uses a 6-axis precision robotic arm that acts as y-axis for planar near-field and cylindrical near-field and theta-axis for spherical near-field acquisitions. It also incorporates a small (500 mm diameter) rotary positioner that is used as a phi-axis for cylindrical near-field and spherical near-field acquisitions. This positioner can support test article loads of up to 4,500 kg (10,000 lb). The RAMS also uses a precision linear translation positioner that is used as an x-axis for planar near-field acquisition and robot repositioning.

Multi-purpose radiated test system to rapidly characterize EW systems and drones
Measure radiation patterns, RCS, emissions, RF signature classification, and more
Test commercial drones, active electronically scanned arrays (AESA), and seekers rapidly and accurately
Test planned jamming profiles, spoofing sequences, or directed energy payloads before field deployment
Delivers hands-on RF/EW training for students, instructors, and deployment teams
Enables hardware-in-the-loop (HIL) testing with enemy, coalition, or commercial sensors for live validation and tuning
Collect intel on captured systems in an accurate and secure facility rated for high RF power levels
Various options available to customize SYS-MPS for your requirements

NSI-MI’s compact range reflector-based systems deliver all the benefits of traditional far-field testing—without the limitations of outdoor environments. Designed for precision and convenience, these systems allow users to conduct electromagnetic measurements in smaller, secure, climate-controlled facilities. For example, testing a 1-meter diameter antenna at 10 GHz in a conventional far-field setup would require a separation distance of nearly 67 meters. With NSI-MI’s compact range technology, this can be achieved in a chamber under 7 meters long, dramatically saving space while maintaining measurement accuracy.

The Horizontal Planar Systems by NSI-MI are equipped with cutting-edge technology to provide unparalleled scanning capabilities. Our horizontal scanners feature a next generation, precision closed-loop servo drive system, ensuring precise and accurate scanning results. The highly engineered structure of our scanners further enhances their performance, allowing for seamless and efficient scanning operations. With the Horizontal Planar Systems, you can expect superior quality and reliability for all your scanning needs. Experience the power of our horizontal planar scanner technology today!

The NSI2000 software is a comprehensive antenna measurement software, running on a large number of installed systems and field-tested daily by an active community of experienced users. The NSI2000 software represents a combination of experience and technology that stands ready to solve your toughest antenna measurement challenges.

Measure signals from 9 kHz to 26.5 GHz with the Keysight N9918D FieldFox Handheld Analyzer.

- Perform spectrum analysis, vector network analysis, cable and antenna testing, pulse generation, and power measurements.

- Capture elusive signals with up to 120 MHz gap-free, real-time bandwidth.

- Stream wideband IQ data with bandwidth up to 120 MHz.

- Make accurate spectrum analyzer measurements (±0.1 dB) without requiring instrument warm-up.

- Use the intuitive touchscreen for simplified file management.

- Carry one lightweight unit at 3.6 kg (8 lb) in a rugged, weatherproof design.

- Two autoranging channels, each delivering up to 1.8 kW. Max. output power: 3600 W
- Two fully independent channels. Up to six channels can be combined (in parallel or in series) to achieve up to 480 V or 300 A.
- Max. voltage per output: 80 V
- Max. current per output: 50 A
- Low-latency control and logging. Accelerate test cycles and increase throughput rate with a command processing time of <3ms for responsive control in automated systems.
- Built-in protections. Seamlessly scale up your testing while maintaining total control and uncompromised safety.