Coaxial cables and Components for use Cryogenic environments (Super Low Temperature) and superconductivity
| Semi-rigid cables for super low temperature (cryogenic) applications |
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 Low in heat conductions. Capable of preventing a heat transmission from a high temperature area. Can be selected from tables shown below depending on applications. Standard is for DC-40 GHz use. Please consult with us for 60 GHz applicatio |
| Superconducting coaxial cable assemblies(0. 085" type Nb-Nb superconducting coaxial cables) |
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 40 GHz is standard. Can response up to 65 GHz. Minimum bending radius: 70 mm Charts are shown below. * Measurements were made using 1 m each input/ output lead cables, which is longer than cables used for an ordinary operation. * Measurements were made after superconducting coaxial cables became completely super conductive. |
| Superconducting coaxial cable assemblies (for high magnetic field applications) (0.085" type NbTi-Nbti superconducting coaxial cables) |
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 This cable is applied for cryogenic and strong electromagnetic field and has been widely used all over the world.It has very high performances and utility at 4K(Kelvin) at the heat slope. * Very low heat conductivity that is a 1/3000 that of Copper and a 1/300 of Niobium(Nb). * High durability in use to 14 T(Tesla) Copper inner-coated Stainless coaxial cables are effective and useful for a temperature range of between a room temperature and 4k. |
| Dielectric waveguides (Winner of the Plunkett award provided by DuPont America.) |
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 The transmission body part is made of dielectric, which enables flexibility and very low insertion loss for millimeterwave.This is best suitable for heat cut-off and high voltage cut-off of between cryogenic (super low temperature) and room temperatures. |
| Filter cables |
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| Strong attenuation can be achieved by using thin coaxial cables. |
| Twisted-pair signal cables for use at ultra low temperatures |
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Twisted pairs allow for common mode noise to be drastically reduced.Also, by inserting twisted-pair cables into sealed pipes, it is possible to avoid heat flow from the high-temperature side. |
| Plug connectors (MMCX / GPPO type) for coaxial cables for use at ultralow temperatures |
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 Plug connectors for coaxial cables with φ=0.33mm. |
| Powder filters for coaxial cables |
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 Copper powder for reducing high-frequency noise in experiments performed at ultralow temperatures. |
| Assembly of semi-rigid copper cables |
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Components for use at ultralow temperatures and superconductivity
| Hermetic seal adapters |
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Adapters for securing high vacuumWe can prepare various types of adapters with flanges. Please do not hesitate to consult us. |
| Low noise amplifiers (Refrigeration type) |
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| Millimeter-wave and microwave test fixtures and calibration kits for use at ultralow temperatures |
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 Test fixtures and correction kits specifically designed for use at ultralow temperatures for testing the performance of patterns between the edges of printed boards (edge type) and circuit testing inside the printed boards (probe type).We aim for drastic reduction of the influence of thermal shrinkage as well as for the miniaturization and the reduction of the heat capacity of our devices. In addition, our product line includes products operating in the 1 μHz - 300 GHz (infrasonic / VHF / UHF / microwave / millimeter wave / super-high) frequency range. |
| 110~140GHz oscillator systems |
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| Generators of millimeter waves which allow the frequency to be altered mechanically in the range between 110GHz and 140GHz. These include variable attenuators. The output can be read with a power meter. *Our product line also includes various oscillator systems for different frequencies. |
| Compact and ultracompact attenuators (operable at ultralow temperatures) |
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* Ultracompact type (φ=5.2 mm, length 15.5 mm). * All cases, connectors, contacts and resistors are non-magnetic. * The resistors are made from a non-superconductive material, and therefore can be used at ultralow temperatures. * The connectors are of the male-female type. |
| Straight metallic waveguides with low heat conductivity |
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 Rectangular waveguides with straight pipes. Standard length is assumed in all cases where the length is not specified. |
It is a super low noise amplifier for cooling.System for use at ultralow temperatures and superconductivity
| Cryogenic (super low temperature) system |
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| KEYCOM develops systems for various applications using coaxial cables for cryogenic temperature applications, millimeterwave dielectric material waveguides, motherboards for low temperature use, chip carriers, and refrigeration units. |
