# Antenna array

1. May 23, 2005

### robert25pl

If current densities are given in a perfect dielectric medium having $$\epsilon , \mu$$
I have to find the power dissipated per unit volume, the electric field energy density, and the magnetic field energy density everywhere.
Can I get help with equations?

2. May 24, 2005

### maverick280857

These are standard equations (outcomes of electromagnetic theory) and you should be able to find them even in a basic treatment of electromagnetic waves (for example, in books like Krane, Sears/Zemansky, etc). You could even search on google.com. What is your specific trouble with them?

3. May 24, 2005

### robert25pl

Given
$$E=J_{so}cos(\omega t-\beta z) \vec{i}$$
and
$$H=\frac{J_{so}}{2}cos(\omega t-\beta z) \vec{j}$$

I have to find power flow density vector(this i know is a P=ExH pointing vector the power)
the dissipated per unit volume, the electric field energy density, and the magnetic field energy density everywhere.

4. May 24, 2005

### robert25pl

Any help with this problem. Its due today. Thanks

5. May 24, 2005