Antenna Feed Impedance

This refers to when a signal source with an RF antenna is applied to the feed point. Load impedance is, because of this, created on the source. This complex kind of impedance comes from inductance, resistance, as well as capacitance.

For complete efficiency in any design OF RF, one should maximize energy transfer by ensuring that the RF antenna feed impedance matches with the load. This operation however requires a thorough understanding of how the antenna design operates. The feed antenna impedance comes because of a number of factors that include RF antenna size, the operation frequency together with its surrounding. The impedance usually comes as a complex one, meaning it consists of elements that are resistive as well as those that are reactive.

These resistance elements come from two elements namely loss resistance and Radiation resistance. The loss resistance is a result of resistance of elements found in the ARF antenna while the radiation resistance comes from the dissipated power that is made from the RF antenna’s radiation.