18 GHz Semi-Rigid Cryogenic RF Coaxial Cable – CRT020

Subminiature 18 GHz Cryogenic Semi-Rigid Cable for Ultra-Cold Instruments

Developed for quantum research platforms, the CRT020 RF coaxial cable offers a defined electrical bandwidth of up to 18 GHz. Within the CRT020 raw coaxial cable configuration, the CRT conductor system is specified down to -268 °C for signal routing into cryogenic stages where ordinary cable materials are unsuitable. Quantitative comparison of the CRT020 coaxial cable with other Cryogenic Semi-Rigid Coaxial Cables models should be based on the endpoint loss, power, conductor, and mechanical data below.

Subminiature Routing into Cryogenic Stages

The mechanical specification combines a 0.58 mm profile with a 2.90 mm minimum static radius and qualified operation from -268 to +150 °C. During installation of the CRT020 raw coaxial cable, routing should remain within the specified bend geometry throughout forming, connectorization, and installation. The subminiature 0.58 mm profile of the CRT020 RF cable supports dense RF packaging, while requiring controlled forming and termination practices. Compliance with these constraints helps protect impedance continuity and repeatability at the cable-to-connector transition associated with the CRT020 RF coaxial cable.

Cryogenic Signal-Transfer Fundamentals

At full rated bandwidth, the cable exhibits a specified attenuation of 23.902 dB/m and supports 0.015 kW of RF power. Its center conductor is silver plated copper-nickel alloy with a diameter of 0.13 mm; propagation velocity is specified at 70%. For the CRT020 RF cable, the 70% propagation value provides the basis for estimating electrical delay and timing skew over the required assembly length. Together, these values support link-loss, electrical-delay, and power-margin calculations for the CRT020 RF coaxial cable at the intended operating frequency.

Ultra-Cold Measurement and Detector Connections

Its defined operating envelope supports technical assessment for low-temperature detectors and superconducting experiments without extrapolating from family-level data. For the CRT020 coaxial cable, its product-level parameters provide a practical basis for cable selection, assembly design, and technical verification. When alternatives to the CRT020 raw coaxial cable are required, additional construction and performance options are available in the Semi-Rigid Coaxial Cables portfolio.

Mechanc Shanghai Information Technology Co., Ltd. documents the CRT020 RF coaxial cable with product-specific parameters so that RF engineers can evaluate the interconnect against system bandwidth, loss budget, power, thermal, and packaging requirements. Within the product portfolio, this configuration is designated as the CRT020 raw coax.