Applications / Low-Temperature RF

Quantum & Cryogenic Systems

Microwave interconnects for quantum control, readout and cryogenic measurement.

Dilution refrigerators connect instruments at room temperature with devices at kelvin and millikelvin stages. Vinstronics supplies cryogenic coaxial cables, connectors and RF components to support these measurement paths.

Dilution refrigerator with cryogenic coaxial microwave connections

The cryogenic environment

Where RF performance meets the thermal budget

Cryostat wiring must account for electrical loss and impedance matching without overlooking heat flow, material behavior and space.

Thermal Load

Conducted heat between stages can consume limited cooling capacity.

RF Loss & Matching

Interconnects and transitions affect the microwave measurement path.

Magnetic Compatibility

Material and plating choices matter around sensitive superconducting devices.

Dense Cold-Stage Routing

Line diameter, mechanical support and thermal anchoring constrain cable layouts.

Along the RF path

From the instrument to the cold-stage device

Interface & Feedthrough

Connector interfaces provide RF continuity between instruments, vacuum boundaries and installed cryostat wiring.

Inter-Stage Transmission

SS and CuNi cabling can reduce heat conduction; NbTi options address selected low-temperature microwave paths.

Cold-Stage Conditioning

Attenuators, terminations and infrared filters serve different noise-management and signal-path functions.

Vinstronics solutions / Core wiring

Cryogenic cables across temperature stages

Low-temperature RF routing is the foundation of the measurement chain. The broader cable portfolio includes a dedicated NbTi superconducting family.

Vinstronics cryogenic coaxial cable assembly with gold-colored connectors

Cryogenic Cables & Assemblies

Stainless-steel, CuNi and NbTi cable options for low-temperature routing, available as bulk coaxial cable or terminated assemblies for different instrument and cryostat interfaces.

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NbTi superconducting coaxial cable with exposed center conductor

NbTi Superconducting Coaxial Cables

A focused low-temperature cable platform for selected 4 K-to-mK microwave paths where conductor loss, thermal conduction and installation geometry must be considered together.

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Vinstronics solutions / RF components

Interfaces, attenuation and termination

Separate components have distinct roles in cryostat wiring. Explore the relevant family for its available formats and test data.

Vinstronics non-magnetic SMA male RF connector VST-CXSMAM-D2-29

Cryogenic RF Connectors

Threaded and miniature coaxial interfaces for low-temperature assemblies, including low-magnetic construction options.

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Vinstronics 2.92 mm cryogenic RF fixed attenuator

Cryogenic RF Attenuators

Defined attenuation for selected low-temperature microwave lines and staged control of incoming signal and noise levels.

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Vinstronics SMA male cryogenic 50 ohm RF termination VST-QF-SMAM0202-18G

Cryogenic RF Terminations

Matched loads to absorb incident RF energy and reduce reflections at defined unused or terminated ports.

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Vinstronics SMA cryogenic infrared filter VST-PF-SMA3002-18G

Cryogenic Infrared Filters

Reduce unwanted high-frequency photon loading in appropriate low-temperature signal paths; insertion loss depends on the filter design.

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Vinstronics oxygen-free copper GSG cryogenic RF probe

Specialized low-temperature measurement

Cryogenic RF Probes

For direct RF contact with accessible pads on superconducting devices and cryogenic test structures, Vinstronics offers oxygen-free-copper GSG probe configurations. This is a specialized characterization method rather than a standard component of every refrigerator control line.

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Research environments

Supporting quantum and cryogenic measurements

Quantum Control & Readout

Cryogenic microwave wiring and signal-conditioning components connect instrumentation with superconducting quantum-device packages.

Low-Temperature RF Characterization

Coaxial measurement paths and dedicated RF probing provide access to devices and test structures operated at cryogenic temperatures.

Engineering support

Discuss Your Cryogenic RF Project

Contact Vinstronics about low-temperature microwave cables, connectors, signal-conditioning components and RF probing applications.

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