How to distribute RF passive components in antenna system?

Radio frequency passive components are mainly used in the construction of wireless communication system base stations, and indoor distribution systems. Especially in the wireless signal in the building, there are many kinds of applications in the indoor distribution coverage.

 Radio frequency passive components play a role in connecting or distributing RF signals in base station construction and indoor distribution projects. The indoor distribution system connects or splits the signal transmitted by the base station through the passive components, and distributes it to the antennas of each coverage point via the feeder, so as to achieve continuous and good coverage of the indoor wireless signal. In order to get a better indoor signal coverage, this distribution system connects/splits the signal transmitted from the base station to each coverage point of antennas via the passive components.

Passive devices are the main components of the antenna feeder system.

Classic antenna feeder system topology as follows:

RF passive components

The radio frequency signals of multiple formats are sent by each base station, they are combined by passive devices with combining functions such as multi-frequency combiners or bridges, and then transmitted to ceiling antennas or wall hangings distributed throughout the building via cables. The combined signal can also be directly covered by the coupler, which couples a portion of the signal. Due to using more passive devices, the insertion loss of plug-in devices accumulates which can cause a greater attenuation of the signal (transmitting RF signals over long distances, which can produce a larger attenuation during cable transmission.)

 The combined signal is connected to the output port of the multi-frequency combiner as a power splitter (using the reversed combiner). After the signal is filtered by the multi-frequency combiner, it is output by the input port of the multi-frequency combiner. Due to the band-pass filtering characteristics of each port, these ports only output the signal in the working frequency band of each port.

 These signals can be transmitted to special repeaters of various standards: being amplified, output, combined, and then being covered to compensate for the loss and attenuation of the signal on the link, and finally meet the parameters of the link budget design to ensure the coverage effect of each point.

So as the manufacturer of RF passive components, Jingxin can support you to customize the passive components according to the application. You are welcome to contact us. Thanks.

Post time: Sep-24-2021