| An antenna is a convertor for transmitting or getting electromagnetic waves. GSM antennas are produced in 2 types: directional and omnidirectional antennas, and are designed to be used in the spots where there is no connection with the mobile operator.
The use of high gain cell phone antennas permits to improve the quality of connection and the speed of data interchange in GPRS and EDGE modes. Apart from improved connection and the ability to use the mobile communication beyond the covering of the mobile operator, GSM antennas are famous to reduce the backward radiation towards the user. It is very important, as the specific absorption rates (SAR) are minimized and the performance of the antenna is increased. So, the use of cellular antennas ensures high level of efficiency and health protection.
The function of cell phone antennas is to convert power between a circuit and the air, that is why the performance of the device depends on its input and radiation parameters. Selecting an antenna is a significant step, so we would recommend to talk to the professionals. Experts of the firm you're acquiring the antenna from will help you in making the right choice. But nevertheless, don't forget some important factors when choosing a cellular antenna:
- Electric power is supplied to the antenna without backward reflection to the circuit. It means that the feeding point supplies the power, but doesn't take it back;
- The power transferred to the antenna is converted into radio waves;
- In case of any problems with the impedance, the power should not be supplied to the antenna;
- Don't forget that in case the antenna is made of high loss materials, like conductors and dielectrics, the supplied electric power will be transformed into the heat and lost.
As far as you understand, high gain cellular antennas are a wonderful choice in case you need a stable communication and high speed of data transfer. What is more, the use of cellular antennas bring down the specific absorption rates and in this way tells positively on your health. |
