What are the two fundamental characteristics of antennas?
What will be an ideal response?
There are two fundamental characteristics of antennas. First, as the frequency gets higher the wavelength becomes smaller. This means that the size of the antenna is smaller. Consider a cellular telephone: it uses a high frequency so only a small antenna is required. Second, as the gain (positive difference in amplitude between two signals) of an antenna increases, the coverage area narrows. High-gain antennas offer longer coverage areas than low-gain antennas at the same input power level.
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