Nullspace Capabilities Help Boost Large-Scale Antenna and Radar Simulations

Nullspace Inc., an engineering software company modernizing simulation software for radiofrequency applications, has released its electromagnetic simulation suite. This release introduces new features designed to speed up RF simulation times and streamline design workflows, reducing design cycles for new antenna and radar systems.

When designing new RF systems for satellites, communications systems, or defense applications, engineers must work with CAD design files that include features that do not impact the RF performance. Those types of CAD features can slow down EM simulations and design iterations.

The new Nullspace Prep (part of the Nullspace RF tools suite) makes CAD clean-up accessible for RF engineers. The new NS Prep includes AI-based automation features that eliminate the need for unnecessary iterations between tools and departments, allowing RF engineers to quickly prepare CAD files for simulations.

The new release of Nullspace EM is a commercially available electromagnetic (EM) simulation tool to combine full-fidelity (high-accuracy) EM simulations, a compression algorithm, and Fast Adaptive Frequency Sweeps (FAFS) for accurate, full-fidelity EM simulation results.

For many antenna and microwave applications, engineers need to analyze the performance of an RF device or system in a certain range of frequency. 

The new FAFS feature enables "smart sampling" of frequencies using a physics-informed interpolation across the full range of the frequencies of interest. The user only needs to specify the "start" and "end" points for a frequency range, and Nullspace will do the rest. The combined power of Nullspace's matrix compression algorithm, combined with Fast Adaptive Frequency Sweeps, delivers simulation speed-ups for applications such as wideband antenna on-body analysis, phased array performance, and other real-world RF system applications.

More Realistic RF Modeling

The addition of the Passive Circuit Loads feature in the new version of Nullspace EM empowers engineers to simulate more realistic, large-scale phased arrays, while providing more design freedom during the design process of those complex RF systems.

This feature enables engineers using Nullspace EM to add electrically small impedance loads to models. Engineers can now analyze antenna terminations and tunable lumped circuit loads when designing advanced applications such as tunable leaky wave antennas and meta-surfaces. This feature allows for optimization of impedance matching and analysis of system-level performance.

About Nullspace

Nullspace develops full-fidelity, high-speed simulation software purpose-built for RF systems and quantum computing. Nullspace solutions power innovation in aerospace, defense, 5G, spectrum management, and emerging quantum architectures.

Sources: Press materials received from the company and additional information gleaned from the company’s website.