Performance Evaluation of Extremely Thin 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, electromagnetic waves have shorter wavelengths, making cables more sensitive to signal attenuation and reflection. Ultra-fine coaxial cables, through a tightly designed shielding layer, effectively suppress external electromagnetic interference and maintain signal integrity. However, as the cable becomes finer, medium loss and conductor loss increase relatively, so it is necessary to reasonably control the transmission distance in design. Usually, within a range of several tens of centimeters to one meter, high-quality ultra-fine 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. Extremely thin coaxial cables are generally designed with a characteristic impedance of 50Ω, achieved through precise manufacturing and strict tolerance control. For high-speed interfaces such as MIPI, USB 3.x, or RF antenna chains, stable impedance is a key factor in ensuring system reliability.

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

Overall, ultra-fine coaxial cables still provide good signal transmission performance at the 6GHz frequency band, but it is necessary to choose the cable model, length, and connector according to the specific application scenario to maximize its advantages.
I am[Suzhou Huichengyuan Electronic], Long-term focus on the design and customization of high-speed signal cables and ultra-thin coaxial cables, committed to providing stable and reliable high-speed interconnection solutions. If you have related needs or want to learn more, please contact:Manager Zhang 18913228573 (WeChat number)。