What is coaxial cable? and what's the advantage of coaxial cable?

What is Coaxial Cable?

Introduction:

It is most common transmission line used to transmit electrical energy from one location to the another. For example it is used to connect transmitter to an antenna. The signal propagation is in the form of TEM (Transverse Electromagnetic) mode.

Coaxial cable is typically classified based on its impedance viz. 50 Ohm (RG-8 type) or 75 Ohm. The 50 Ohm is used for two way communication, RF & Microwave transmissions, data transmission and M&C applications. The 75 Ohm is used as video cable.

As shown in the figure-1, Coaxial cable consists of two condustors which are separated by dielectric material. The center conductor (A) and outer conductor (B) (e.g. shield) are configured to form concentric cylinders with common axis and hence the name. The center conductor is constucted using solid or seven strand conductors. The materials commonly used include copper, silver plated copper, copper clad aluminium, copper clad steel etc. The outer conductor uses multiple small aluminium or copper conductors. Dielectric layer (C1, C2) separates these two conductors. It is made using materials such as polyethylene, polypropylene, fluorinated ethylene propylene etc. Many coaxial cables use an additional insulating outer sheath or jacket (C2) as shown.

Benefits or advantages of Coaxial Cable

Following are the benefits or advantages of Coaxial Cable:

➨Due to skin effect, coaxial cable is used in high frequency applications (> 50 MHz) using copper clad materials for center conductor. Skin effect is result of high frequency signals propagating along outer surface of the conductor. It increases tensile strength of the cable and reduces weight.

➨The cost of coaxial cable is less.

➨The outer conductor in coaxial cable is used to improve attenuation and shield effectiveness. This can be further enhanced with the use of second foil or braid known as jacket (C2 as designated in the figure-1). The jacket is used as protective cover from the environment and makes overall coaxial cable as flame retardant.

➨It is less susceptible to noise or interference (EMI or RFI) compare to twisted pair cable.

➨It supports high bandwidth signal transmission compare to twisted pair.

➨It is easy to wire and easy to expand due to flexibility.

➨It allows high transfer rates with coaxial cable having better shielding materials.

Ucoax provides a wide range of standardized and customized Micro Coaxial Cables AWG 36-46 solutions in high-frequency & high-speed applications. These solutions ensure the reliable transmission of signals, data and power in highly demanding applications.

Our selection of cable assemblies range from simple jumpers to power and high-speed data cables to complex harnesses. They are used in a wide variety of applications and industries to interconnect components, sub-systems, and equipments.

Our investment into making sure we are the best cable tooling and assembly company you can choose is second to none in our category, and our capabilities are vast. As we serve many different industries, we maintain inventory on applicators and connectors from Molex, JST, TE, Deutsch, Hirsose, and many others. Our library of crimp tools is maintained and calibrated regularly by our engineering staff, ensuring we always have the right tool for any assemblies for wire cables.

Our products:

We specialize in cabling and connectivity products across all networking, audio/video, telecommunications and security markets. Our products include AR VR Link Extension Cable, IEC and NEMA power cables, UL Wiring Material, Medical Cable, audio/video cables including HDMI 2.1 Cable, DisplayPort, RCA Cables, 3.5mm cables, Usb Cables, wall plates, video splitters, switches and converters, Projector Cable, bulk cables, networking racks and accessories.