Ultra Low Loss 26.5 GHz Precision Test Coaxial Cable with PFA Jacket – Model CFS520

High-Frequency Precision Cable for Low-Loss and Stable RF Testing

The CFS520 ultra-low-loss precision test coaxial cable delivers outstanding phase and amplitude stability for high-frequency measurement systems up to 26.5 GHz. Designed for metrology, VNA calibration, and RF signal characterization, it ensures exceptional electrical repeatability and mechanical durability. With a precise 50 Ω impedance and full REACH and RoHS compliance, this model meets the demanding standards of advanced laboratory and production test environments.

Exceptional Electrical Stability and Signal Integrity

The CFS520 coaxial cable incorporates a solid silver-plated copper inner conductor and LD-PTFE dielectric to achieve ultra-low attenuation and stable impedance across a wide frequency range. Attenuation remains minimal—only 0.234 dB/m @ 1 GHz and 1.275 dB/m @ 26.5 GHz—while amplitude stability is maintained within ±0.1 dB @ 18 GHz. Phase deviation stays within ±2° @ 10 GHz and ±3° @ 18 GHz, ensuring precision signal transmission in measurement chains. With a phase stability below 750 PPM across –55 °C to +85 °C, the CFS520 ensures highly repeatable test results even under temperature fluctuation.

Mechanical Robustness and Superior Shielding

Encased in a 5.20 mm PFA jacket, the CFS520 cable combines flexibility, mechanical strength, and long-term reliability. Its dual silver-plated copper shields achieve > 90 dB shielding effectiveness, eliminating external interference and preserving low-noise signal integrity. The cable withstands up to 1500 VDC and supports a minimum single-bend radius of 26 mm and repeated-bend radius of 52 mm, providing stable performance under repeated handling and connection cycles. Weighing 67 g/m, it offers a durable yet manageable structure for both laboratory and production use.

Applications Demanding High Repeatability and Low Loss

The CFS520 ultra-low-loss coaxial cable is designed for precision RF and microwave measurement systems, including VNA calibration, signal integrity verification, and antenna or radar testing. Its low insertion loss, consistent phase response, and robust construction make it ideal for long-term professional use. For more precision-grade options in various diameters and frequency ranges, visit the Precision Test Coaxial Cable Series by Mechanc.

Manufactured by Mechanc Shanghai Information Technology Co., Ltd., the CFS520 ultra-low-loss precision test coaxial cable ensures consistent phase stability, exceptional attenuation control, and verified REACH and RoHS compliance, providing long-lasting precision for professional RF measurement systems.

Explore the full Ultra-Low-Loss CFS Series.