Antennas for Wi-Fi communication systems in railway transport
Railway transport is a very rapidly developing sector of the modern public transportation system, especially in large cities and megacities. Today, creating a high-capacity transportation system is impossible without providing access to high-grade Internet services for all passengers. This is achieved via the deployment of Wi-Fi communication systems along the route.
Providing wireless coverage for railway transport, which also includes the metro, imposes special restrictions on the equipment used: the resulting radio field has to cover the entire route of the train, despite the huge variety of tunnel geometries and open sections of railway tracks. This creates a need for compact antennas with a high gain to be used in the base stations (BS) located both along the track and on the train itself. At the same time, one of the most significant challenges of creating a "seamless" train-BS radio channel is maintaining the connection of the train with the base station even when it enters a shadow zone when passing the base stations installed along the track.
Providing wireless coverage for railway transport, which also includes the metro, imposes special restrictions on the equipment used: the resulting radio field has to cover the entire route of the train, despite the huge variety of tunnel geometries and open sections of railway tracks. This creates a need for compact antennas with a high gain to be used in the base stations (BS) located both along the track and on the train itself. At the same time, one of the most significant challenges of creating a "seamless" train-BS radio channel is maintaining the connection of the train with the base station even when it enters a shadow zone when passing the base stations installed along the track.
23 July 2019
An effective way to address this challenge is to use train-mounted antennas which simultaneously emit signals both along the direction of the train and in the opposite direction. Return radiation ensures that the train does not break off the connection with the base station even when it enters the shadow zone.
Radio Gigabit Systems has developed a special RGA-T5 series of Wi-Fi antennas for use on the railway cars. This series features antennas that emit signals only along the direction of railway traffic, and antennas that emit in both directions (forward and reverse directions). Our unique innovative technology allows to keep the level of the reverse radiation of the RGA-T5-14 bipolarization antenna at about -10 dB, which ensures that the train does not disconnect from the base station even in the shadow zone. These antennas are already widely used in daily operation and have already proven to be effective.
The portfolio of Radio Gigabit Systems products also features antennas for base stations located along the routes. These include the RGA-P5-19 bipolarization antenna, which can be used as the base station antenna due to its small dimensions, high gain, and high degree of protection against moisture and dust.
Radio Gigabit Systems has developed a special RGA-T5 series of Wi-Fi antennas for use on the railway cars. This series features antennas that emit signals only along the direction of railway traffic, and antennas that emit in both directions (forward and reverse directions). Our unique innovative technology allows to keep the level of the reverse radiation of the RGA-T5-14 bipolarization antenna at about -10 dB, which ensures that the train does not disconnect from the base station even in the shadow zone. These antennas are already widely used in daily operation and have already proven to be effective.
The portfolio of Radio Gigabit Systems products also features antennas for base stations located along the routes. These include the RGA-P5-19 bipolarization antenna, which can be used as the base station antenna due to its small dimensions, high gain, and high degree of protection against moisture and dust.
