Metamagnetics Announces Launch of Self-Biased Circulators

Product Line Built for Applications Across Aerospace and Defense Systems Features Breakthrough Design and Built Entirely Without Rare-Earth Magnets

MARLBOROUGH, Mass., May 8, 2025 /PRNewswire/ -- Metamagnetics Inc., a rapidly growing defensetech startup developing advanced RF solutions for national security and mission-critical applications, has unveiled its Self-Biased Circulators, a new line of RF mm-wave circulator and isolator components that boast excellent performance in a small volumetric package, and do not require a rare earth-based magnet. The Self-Biased Circulator products deliver sustainable, high-reliability performance across advanced military RF systems and have a 100% US Supply Chain. 

Unlike circulators and isolators currently in use that require rare earth-based magnets, Metamagnetics' Self-Biased Circulators do not require a permanent magnet and are not dependent on China-sourced rare-earth materials. China's dominance of rare-earth supply chains is a significant and increasing concern for US economic and national security. 

Metamagnetics' Self-Biased Circulators are critical to many Aerospace and Defense applications and are available from Ka band and above in microstrip form. The devices have a footprint of approximately 0.100-inch x 0.110-inch x 0.010-inch, and are more than 90% smaller in volume and mass compared to conventional products that utilize rare earth-based bias magnets. Metamagnetics' Self-Biased Circulators have survived excessive shock and vibration environments at levels greater than 50,000 g-forces, without any compromise in performance.

Vince Harris, Metamagnetics' Founder and CEO, said, "We are extremely proud of this product launch, which addresses the critical needs of the Department of Defense's planners and warfighters, as well as the US defense industrial base. Our Self-Biased Circulator's performance, size, and weight, combined with our unique design obviating the need for rare-earth bias magnets, is truly groundbreaking. Metamagnetics continues to bring to market transformational RF solutions that address the greatest challenges in assured communications and broader intelligence, surveillance and reconnaissance missions across contested domains."

Metamagnetics' Self-Biased Circulators can be readily integrated into a variety of defense systems and are currently the only available devices of their kind that offer the unique combination of small form factor, strong performance and supply chain security.

ABOUT METAMAGNETICS

Metamagnetics develops and produces transformational solutions for customers in aerospace, defense and mission-critical domains. The company's high-frequency products are deployed across the most advanced intelligence, surveillance and communications systems. Metamagnetics' customers include the Department of Defense, other US Government Agencies, major US aerospace and defense prime contractors and leading technology companies. Metamagnetics is a Veteran-Owned Small Business and is based in the Boston metropolitan area. 

Contact

Lee Burns
President
[email protected]
781.571.2005

Alex Barani
Senior Director, Sales and Business Development
[email protected]
774.405.7571

SOURCE Metamagnetics