Blueshift Launches PhaseBlue 1500 Series Circuit Material

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Blueshift, a U.S.-based technology leader in advanced materials, is introducing PhaseBlue® 1500, the first product in its Series Circuit Materials (SCM) line at this year’s (2025) European Microwave Show. These latest laminates are engineered with a proprietary nanoporous polyimide aerogel core composed of 85% air and 15% polyimide, enabling an unmatched combination of light weight, flexibility, and high-frequency performance.

As a U.S. made and sustainably compliant material that meets modern environmental standards (formulated without intentionally added per- and polyfluoroalkyl substances), PhaseBlue® addresses growing regulatory and environmental concerns while delivering a next-generation alternative to PTFE-based substrates.

PhaseBlue® SCM offers a dielectric constant (Dk) of 1.3 – 1.5 at 1 GHz and an ultra-low dissipation factor (Df) of <0.001 at 1 GHz. Unlike conventional perfluorinated substrates, PhaseBlue® maintains stable dielectric performance across a wide frequency range (1–10 GHz) without exhibiting the ‘dielectric knee’ that compromises signal reliability under high temperatures.

With a glass transition temperature (Tg) of 305 °C and decomposition temperature of 530 °C, PhaseBlue® materials deliver superior thermal stability during soldering, processing, and long-term operation—far beyond the survivability of PTFE-based systems.

PhaseBlue® is up to 80% lighter than conventional laminates with a density of 0.27–0.45 g/cm³. Its thin profile, available in dielectric thicknesses from 0.0065 – 0.030” (165 – 750 µm), provides engineers with flexible, formable solutions ideal for 3D structures, conformal antennas, phased arrays, radomes, CubeSats, UAV systems, and high-speed aerospace communications.

Importantly, PhaseBlue® integrates with existing FR-4 PCB processes (DES, drilling, etchback), allowing engineers to adopt it without special equipment or costly process changes.

Tim Burbey, President at Blueshift, comments: “The European Microwave Show is the ideal venue to showcase PhaseBlue® 1500. Engineers today face complex challenges in RF design, balancing performance, weight, and regulatory pressures. Our PhaseBlue solution offers a breakthrough: lightweight, thermally robust, and easy to integrate into existing PCB manufacturing. With these qualities, engineers can expand design freedom while maintaining signal integrity, reliability, and long-term durability.”

He adds: “PhaseBlue is proven, having already been applied across multi-layer antenna boards, CubeSats, UAV communications, and advanced aerospace and defense platforms, with results highlighting reliability under extreme, and demanding conditions.”