Sage Millimeter

Sage Millimeter

Sage Millimeter is a US-based manufacturer of millimeter-wave passive components and microwave test accessories, specializing in the frequency range from 18 GHz to over 325 GHz. The company designs and produces waveguide-to-coaxial adapters, attenuators, couplers, power dividers, mixers, and other passive millimeter-wave components used in laboratory test setups, system integration, and signal path assembly. Their products cover standard waveguide bands including WR-10 (75–110 GHz), WR-12 (60–90 GHz), WR-15 (50–75 GHz), WR-28 (26.5–40 GHz), and others.

Sage Millimeter components are commonly used as building blocks in mmWave test benches, where transitions between coaxial measurement equipment and waveguide-based devices under test are required. The company's waveguide adapters and accessories are valued for their precision machining, low insertion loss, and consistent electrical performance across the specified frequency range.

Key Product Lines

• Waveguide-to-Coaxial Adapters — transitions between standard waveguide flanges and SMA, 2.4 mm, 1.85 mm, and other coaxial interfaces
• Waveguide Attenuators and Terminations — fixed and variable attenuators for mmWave signal level control
• Directional Couplers and Power Dividers — passive signal splitting and sampling components for mmWave test setups
• Mixers and Frequency Converters — passive millimeter-wave mixing components for up/down conversion

Industries Served

Sage Millimeter components are used in 5G millimeter-wave radio development and testing, automotive radar design (77 GHz and 79 GHz bands), aerospace and defense radar and EW systems, satellite communications, radio astronomy, and academic and government R&D laboratories working in mmWave frequency bands.