RF & microwave vacuum feedthroughs provide hermetic coaxial signal interfaces for transmitting high-frequency electrical signals across HV/UHV vacuum boundaries. They are designed for applications where impedance control, low insertion loss, and vacuum integrity are critical, including accelerators, RF diagnostics, and research vacuum systems. Signal type: RF & microwave coaxial Frequency range: DC to GHz (application-dependent) Vacuum rating: HV / UHV compatible Connector options: SMA, 2.92 mm (K), N-type, BNC Sealing: Ceramic-to-metal hermetic seal Operation: CW or pulsed RF What This Product Demonstrates This page presents representative RF & microwave vacuum feedthrough designs. Final assemblies are custom-engineered based on frequency band, power level, flange standard, connector type, and vacuum requirements. Typical Applications RF cavities and couplers Beam diagnostics and RF pickup systems Microwave diagnostics in accelerators Vacuum RF test stands Laboratory high-frequency instrumentation Key Design Considerations Controlled impedance through ceramic-metal transition Low insertion loss and stable VSWR Thermal and mechanical stability during bakeout Grounding and shielding continuity Long-term reliability under vacuum cycling Engineering Specification Checklist Target frequency range Insertion loss / VSWR requirement RF power level (CW or pulsed) Connector standard and channel count Vacuum level (HV / UHV) Bakeout temperature Flange type and mechanical constraints Related Feedthrough Solutions Accelerator & BPM Feedthroughs High-Voltage Vacuum Feedthroughs High-Current Vacuum Feedthroughs Custom & Hybrid Feedthroughs FAQ Which RF connector should I choose?Connector selection depends on frequency range and power level. SMA and 2.92 mm connectors are commonly used for higher-frequency applications, while N-type and BNC are suitable for lower-frequency diagnostics. Are RF vacuum feedthroughs suitable for UHV systems?Yes. Designs can support UHV environments with ceramic-to-metal hermetic sealing and bakeout-compatible materials. What is the difference between an RF feedthrough and a microwave window?RF feedthroughs are typically used for signal transmission and diagnostics with controlled impedance, while microwave windows are designed for high-power RF injection.
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