CX Series: Low Loss Stable Phase High-Power Special Impedance Coaxial Cable
CX Series: Low Loss Stable Phase High-Power Special Impedance Coaxial Cable is engineered for high-power RF transmission and precision microwave systems. Featuring low insertion loss, excellent phase stability and custom impedance options, this cable is widely used in radar transmitters, satellite communication systems, RF power amplifier modules, microwave communication equipment and high-frequency RF testing platforms.
CX Series: Low Loss & Stable Phase & High-Power Special Impedance Coaxial Cables
AO Microwave’s CX Series coaxial cables are designed to deliver low insertion loss and high phase stability for high-power, non-standard impedance applications up to 40 GHz. Built with a low-density, phase-stable PTFE dielectric, these special-impedance cables—available in customized values such as 10, 25, 75, or 100 ohms—feature thick silver-plated copper inner conductors and helically wrapped copper tape shields to maximize power handling. Operating across standard bands, our CX Series assemblies achieve an exceptional shielding effectiveness of typically > 90 dB, flat attenuation curves under thermal load, and tight phase stability under wide temperature cycling.
These high-power, special-impedance cable assemblies are engineered to simplify impedance matching in active systems. By eliminating the need for complex, bulky discrete matching networks, they allow for direct connection of low-impedance power amplifiers and multi-way combiners.
Understanding Special Impedance Matching in Active Systems
The characteristic impedance of a coaxial cable depends on the ratio of the outer conductor's inner diameter to the inner conductor's outer diameter. While 50 ohms is the standard for RF routing, active high-power semiconductor devices (such as GaN power transistors) typically exhibit very low output impedances (e.g., 10 to 25 ohms).
To match these low impedances, active power combiners often require non-standard impedance lines. AO Microwave’s special-impedance cables are engineered in custom values (such as 25, 75, or 100 ohms). By utilizing thick center conductors and low-density PTFE dielectrics, these cables provide stable impedance matching across standard bands, allowing for direct connection of low-impedance power amplifiers and combiners.
Target Applications & Operational Advantages
By providing low insertion loss and high phase stability, our CX Series special-impedance cables secure active power networks:
Active SSPA Power Matching
Function: Connects the low-impedance output stage of GaN power transistors directly to combining networks.
Advantage: Low impedance (e.g., 25 ohms) minimizes mismatch losses without requiring bulky discrete matching networks.
High-Power Transmitter Feeds
Function: Routes high-power RF signals inside transmitter subsystems.
Advantage: Thick silver-plated copper inner conductors handle high power levels without thermal runaway or impedance drift.
75/100-Ohm Custom Networks
Function: Routes high-frequency video or digital clock signals requiring specific characteristic impedances.
Advantage: Exceptional shielding effectiveness (>90 dB) prevents cross-talk and EMI leakage in high-density installations.
CX Series Coaxial Cable FAQs
Need high-power, special-impedance CX Series Coaxial Cables?
Specify your required impedance (10/25/75/100 ohm), connector interfaces, average power, and frequency range — we'll quote in 24 hours.
