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RF Antennas

R2T2458W is an antenna which adopted a microstrip antenna for its structure. It includes a radiation patch and a ground plate below the radiation patch. R2T2458W antenna has two main applications, one of which for Wireless Local Area Network (WLAN) and the other for Bluetooth. Because of the light weight and less space, it is mainly used by cell phone, laptop and digital terminal equipments.

The working principle of the R2T2458W antenna is the same as a basic antenna, such as the dipole antenna. Its radiation pattern is mainly determined by the structure and materials of the antenna. The antenna is constructed with a conducting patch, a ground plane, and an exciting source, which is generally a transmission line. When the exciting source energises the antenna, an electric field and a magnetic field will be generated. Radio waves are then radiated out of the antenna.

In terms of the antenna structure, the R2T2458W antenna consists of the ground plane and the radiating element. The radiating element is a microstrip antenna type which consists of a metal patch and a microstrip transmission line. The metal patch is a thin sheet of metal with a specific length and width, and the transmission line supplies the signal to the antenna. The metal patch is connected to the ground plane by the microstrip transmission line which acts as an effective extension of the metal patch.

In addition, the ground plane of the R2T2458W antenna plays an important role in the antenna operation. It works as a “ground” for all electromagnetic waves. The size and shape of the ground plane affects the antenna impedance, radiation pattern, efficiency, and gain. The size of the ground plane determines the bandwidth of the antenna, which is inversely proportion to its size and can be extended by increasing the size of the ground plane.

The R2T2458W antenna is also characterized by its adjustable impedance. The impedance of the antenna can be adjusted by varying the size of the metal patch, the microstrip line length, and the distance between the metal patch and the ground plane. By controlling these parameters, the antenna impedance can be adjusted to match the frequency of its corresponding application.

To conclude, the R2T2458W antenna is a microstrip antenna type which is mainly used in WLAN and Bluetooth applications. It is easy to install, adjustable, and has a wide applications range. Its working principle is the same as any other antenna, and its structure consists of metal patch and a microstrip line connected to a ground plane. It has an adjustable impedance which can be adjusted by controlling the size of the metal patch, the transmission line length and the distance between the patch and the ground plane.

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