Performance Evaluation of Ultra-Fine Coaxial Cables in Frequency Signal Applications

In high-speed signal transmission and high-frequency applications, extremely thin coaxial cables (micro coaxial cable) are widely used in scenarios such as drones, medical probes, millimeter-wave communication, and high-speed camera modules due to their small diameter, excellent shielding performance, and stable impedance control. Many engineers are concerned about one question: How do the actual performance of these cables perform at the 6GHz frequency band?

High-frequency loss and signal integrity
In the 6GHz frequency band, the wavelength of electromagnetic waves is shorter, and cables are more sensitive to signal attenuation and reflection. The extremely thin coaxial cables, through a tightly designed shielding layer, effectively suppress external electromagnetic interference and maintain signal integrity. However, as the cable becomes thinner, the dielectric loss and conductor loss increase relatively, so reasonable control of the transmission distance is required in the design. Generally, within a range of tens of centimeters to one meter, high-quality extremely thin coaxial cables can still maintain low insertion loss and stable VSWR indicators.

The importance of impedance control and matching
At 6GHz frequency band, impedance mismatch can cause signal reflection, affecting the system's transmission efficiency. Thin coaxial cables are generally designed with a characteristic impedance of 50Ω, achieved through precise manufacturing with strict tolerance control. For high-speed interfaces such as MIPI, USB 3.x, or RF antenna chains, stable impedance is a critical factor for system reliability.

Performance in applications
In practical applications, such as 5G miniaturized antenna modules, millimeter-wave radar, and medical high-frequency probes, ultra-fine coaxial cables demonstrate excellent flexibility and stable transmission performance. Engineers typically combine simulation and measurement to evaluate their loss characteristics at frequencies of 6GHz and even higher, to ensure that the system meets bandwidth and signal-to-noise ratio requirements.

In general, ultra-fine coaxial cables can still provide good signal transmission performance at the 6GHz frequency band, but it is necessary to reasonably select the cable model, length, and connector according to the specific application scenario to maximize its advantages.
I amSuzhou Huichengyuan ElectronicsLong-term focus on the design and customization of high-speed cable harnesses and ultra-fine coaxial cables, committed to providing stable and reliable high-speed interconnect solutions. If you have any related needs or would like to learn more, please feel free to contact us:Manager Yin 18913280527 (WeChat number the same)。