# A half wave antenna is used to produce an electromagnetic wave which has a maximum electric field 600 V/m. a. Determine the magnetic field of this wave. b. Determine the total average energy density...

A half wave antenna is used to produce an electromagnetic wave which has a maximum electric field 600 V/m.

a. Determine the magnetic field of this wave.

b. Determine the total average energy density of this wave.

c. Determine the length of each of the two wires used in the antenna if the frequency of the wave produced is 3.2 GHz.

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valentin68 | Certified Educator

calendarEducator since 2013

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a)

Suppose you have an electromagnetic wave with the Eand Bvectors like in the figure below. Than the direction of wave propagation is along the z axis (see the figure).We can write

`E_x = E_max*sin[2*pi*(z/lambda -t/T)]`

`B_y =B_max*sin[2*pi*(z/lambda-t/T)]`

The Maxwell equation relating the vectors E and B is