Coaxial cables are essential for radio frequency signals, wireless technology, and telecommunications, among other uses. But just like in any electrical or signal-related situation, the quality of coaxial cable is crucial. Poor performance, signal loss, or distorted data might result from low-quality cables. The solution is selecting the right coax cable from the start of the project. This requires taking into account a number of important factors, including:

Conditions and measurements

Identifying the problem that needs to be solved is always the first step for choosing high-quality coaxial cables. This refers to being aware of the signal characteristics that a coaxial cable will be conveying. 

The frequency range and the signal power levels being sent are the two most important variables. Additional factors include the length of the routing and its complexity, as well as the RF and electromagnetic environment through which the signals will be routed. 

Spectrum of frequencies

Next, you must evaluate the required transmission speed and the frequency of the signals you intend to convey. The goal is to prevent any distortion or loss of signal. This is due to the fact that the frequency ranges of various coaxial cables vary. 

As a result, make sure the cable’s frequency range is appropriate for the intended use. For instance, specialized coaxial cables with improved shielding may be necessary for high-frequency communications in order to reduce signal loss.

The impedance

The two most commonly used cable impedances are 50 Ohm and 75 Ohm. Mixing up the two could result in harm to the devices themselves or their connectors or at the very least, lower system performance. Though there is occasionally a crossover, 75-ohm cables are usually utilized for video applications, and 50-ohm cables are more frequently used for data and wireless uses. The appropriate cable impedance will depend on the kind of machinery and gadgets that need to be connected.

Select the appropriate length in relation to attenuation

Attenuation of a cable is the amount of signal loss at a given distance. The attenuation will often increase with frequency. Additionally, longer cables may experience greater signal loss and distortion than shorter ones. You should, therefore, select a cable that is the appropriate length for your requirements.

Shielding 

There are numerous varieties of exterior conductors and shielding, including braided, stranded, foil, solid, corrugated, and various geometries and styles. Certain cables may have many shielding layers added on top of the outer conductor to further lessen interference that is both received and sent by the coaxial cable. 

Different types of shielding facilitate low attenuation, increased rigidity/flexibility, and crush resistance. Selecting a cable with adequate shielding will protect your signal from any possible interference.

Coaxial assembly vs coaxial cable?

Many suppliers sell preassembled coaxial assemblies for a particular purpose because mounting coaxial connectors on cables involves a range of application requirements. A cable assembly might be the ideal option if the length, performance requirements, and kind of coaxial connector are meant for a particular application.

A key takeaway

Quality depends on the manufacturer. Selecting only certified suppliers with stellar reputations and top-notch quality control systems is the best defense against the possible losses associated with fake and knockoff coaxial cables.