Design Guidelines and Key Specifications for Phase Matched RF Cables

The proper selection of Phase Matched RF Cables should take into account not only the frequency range, VSWR, insertion loss, etc. But also the mechanical characteristics of the cable, the environment in which it will be used, and the requirements of the application. In addition to cost, it is always a constant factor.

In this article, various specifications and performances of Phase Matched RF Cables are discussed in detail. And it is useful to understand the performance of the cables to select the best RF cable assembly.

Phase Matched RF Cables are used to transmit RF and microwave signal energy. It is a distributed parameter circuit, whose electrical length is a function of physical length and transmission speed, which is fundamentally different from low-frequency circuits.

The following is a list of the catalog:

• Characteristic Impedance

• VSWR (Standing Wave Ratio)

• Attenuation (insertion loss)

• Average power capacity

• Propagation Speed

• Phase stability during bending

• Passive intermodulation distortion

The main specifications of Phase Matched RF Cables are:

Characteristic impedance

The maximum power transmission and the minimum signal reflection depend on the matching of the characteristic impedance of the cable with the other components of the system. The characteristic impedance (Zo) of Phase Matched RF Cables is related to the ratio of their inner and outer conductor dimensions. The majority of RF cables are used in communications, which have a characteristic impedance of 50Ω. 75Ω cables are used in broadcast television.

VSWR (Standing Wave Ratio)

In RF and microwave systems, the maximum power transmission and minimum signal reflection depend on the characteristic impedance of Phase Matched RF Cables and the matching of the other components in the system. The change in impedance of Phase Matched RF Cables will cause signal reflection, which will result in the loss of incident wave energy. The magnitude of the reflection can be expressed in terms of the voltage standing wave ratio (VSWR), which is defined as the ratio of the incident and reflected voltages. The smaller the VSWR, the better the consistency of the cable production. A typical microwave cable assembly has a VSWR between 1.1 and 1.5.

Attenuation (insertion loss)

Indicates the ability of Phase Matched RF Cables can efficiently transmit RF signals.

Average power capacity

The ability of Phase Matched RF Cables consumes the thermal energy generated by resistance and dielectric losses.

Propagation speed

Propagation speed is the ratio of the speed of signal transmission in Phase Matched RF Cables to the speed of light. It is inversely related to the root of the dielectric constant of the dielectric. The smaller the dielectric constant is, the closer the propagation speed is to the speed of light.

Phase stability during bending

Phase stability during bending is a measure of the phase change of Phase Matched RF Cables during bending.

Passive intermodulation distortion

It is caused by the nonlinear factors within Phase Matched RF Cables.

Our company supports one year warranty for solderless Phase Matched RF Cables. We have professional customer service, encompassing pre-sales, in-sales, and after-sales services to meet customer demands. If there are any questions about the solderless Phase Matched RF Cables, please don't hesitate to contact us. Contact us to learn more! Our website is www.rfcnn.com