EXC450SMI

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RF antennas are a type of wireless communication antennas, which are widely used in the wireless communication in our daily life. The EXC450SMI is a kind of RF antenna for wireless communication, which are used in various application fields. In this paper, we will first introduce the application fields of EXC450SMI and then discuss its working principle.

EXC450SMI is a four-cavity dual polarization embedded reflector antenna based on absorber integrated cylindrical air column technology. It is designed for high-performance and cost-effective wireless communication system equipment. EXC450SMI supports two frequency bands simultaneously with dual-polarization. It has a high axial ratio of less than 1.8dB, good radiation performance and good reflection performance. It can be use for different application fields such as cellular, WLAN/WiMAX including base station, femtocell and remote antenna system.

The EXC450SMI uses a four-cavity cylindrical air column which is designed by computer simulation software. It uses two polarization patterns which can be used to form a mixed polarization pattern. This is achieved by using four cylindrical air columns to generate the circularly polarized current in the four feeding points. The two cavity feeds with the opposite masses is used to generate the vertical and horizontal polarizations. The spacing between the two cavity feeds is adjustable, which is important to generate the circularly polarized current. The four cylindrical air columns are connected to a coaxial feed line and a narrow band balun. The shape of the four-cavity reflector is designed to generate the required radiation pattern. This design can provide a wide radiation coverage.

The working principle of the EXC450SMI is based on the absorber integrated cylindrical air column technology. The four-cavity design is used to generate the circularly polarized current and provides strong reflection for RF signals. The absorber technology is used for controlling the radio frequency reflection of the antenna. The antenna is used to absorb the radio frequency energy into the absorber sheet, thus preventing the radiation of the energy outwards. The radiation pattern and gain of the antenna is controlled by the shape of the four-cavity reflector and the absorption sheet.

In conclusion, the EXC450SMI is a kind of RF antenna used for wireless communication applications such as cellular, WLAN/WiMAX including base station, femtocell and remote antenna systems. The working principle of EXC450SMI is based on the absorber integrated cylindrical air column technology. The absorber technology is used for controlling the radio frequency reflection of the antenna, while the four-cavity design is used to generate the circularly polarized current and provide strong reflection for RF signals.

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