For an antenna with an efficiency of less than 100%, both the effective area and gain are reduced by that same amount.

The effective area can be found using the following relationship.

However, the effective areas can be calculated from their power gain figures:

For a given frequency the antenna's effective area is proportional to the power gain.

This reduces the effective area for current and increases the local current density.

This can be expressed as an effective cross-sectional area per nucleus.

Will coverage be achieved in the most effective areas?

First, the beam's effective area is the entire body, even an extremity.

There were 2 identical sets of counters, each having 660 cm effective area.

However, the effective area for forestry production is estimated at 2.9 million hectares.