# Sketch electric field of beamed antenna.

1. Sep 10, 2011

### Spinnor

Suppose we have an antenna which has large directional gain. Suppose the antenna broadcasts linearly polarized radiation in a narrow beam and at constant frequency. Sketch the electric field in the plane which contains both the electric field and the beam axis. Does the attached come close?

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• ###### electric field026.jpg
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Last edited: Sep 10, 2011
2. Sep 10, 2011

### Spinnor

Will the magnetic field look similar but rotated a quarter turn about the beam axis?

Given the electric field work backwards and sketch the vector potential.

Thanks for any help!

3. Sep 10, 2011

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