| An antenna (or aerial) is a convertor for receiving or transmitting electromagnetic waves. GSM antennas (GSM refers to Global System for Mobile Communication) are produced in 2 types: directional and omnidirectional ones, and are designated to be used in the spots where there is no connection to the mobile operator.
The use of high gain cell antennas permits to increase the communication quality and the speed of data interchange in GPRS and EDGE modes. In addition to improved performance and the possibility to use the mobile communication beyond the covering, cellular antennas are known to decrease the backward radiation towards the user. It's significant, since the level of electromagnetic wave power absorption is minimized and the antenna's efficiency is increased. In this way, the application of cell phone antennas provides high level of efficiency and health protection.
The purpose of cellular antennas is to convert power between a circuit and the air, this is why the efficiency of the gadget depends on its input and radiation characteristics. Selecting an antenna is an essential move, so we recommend to consult the professionals. Experts in the firm where you're planning to buy the antenna will help you to make the right choice. But keep in mind some significant factors when choosing a cellular antenna:
- Electric power is supplied to the antenna with no backward reflection to the circuit. It signifies that the feeding point should supply the electric power, but not take it back;
- The electric power transferred to the antenna is converted into radio waves;
- In case of any troubles with the impedance, the power should not be supplied to the antenna;
- Remember that in case the antenna is made of high-loss materials, such as conductors and dielectrics, the supplied electric power will be transformed into the heat and lost.
As you see, high gain cell antennas are an excellent choice in case you need a stable communication and high speed of data interchange. What's more, the use of cell antennas bring down the level of electromagnetic wave power absorption and in this way tells favorably upon your health. |
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