ECE :: Electromagnetic Field Thoery
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For an incident wave which is normal on the perfect dielectric the reflection factor is given by (where ε1 and ε2 are the permittivities of 1st and 2nd medium respectively)
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For EM wave propagation in free space, the free space is defined as
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For TE or TM modes of propagation in bounded media, the phase velocity is
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Frequencies in the UHF range propagate by means of
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Intrinsic or characteristic impedance of free space has a value of
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Radiation resistance of half-wave dipole (λ/2) antenna is in free space
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The effect of the inductance of a coil on a constant direct current is that
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If H = 0.1 sin (108p t + βλ)
A/m for a plane wave propagating in free space, then the time average Poynting vector is -
The ratio of tangential component of electric field at the surface of a conductor and the linear current density resulting from this field is __________ impedance
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The gain of collinear arrays is maximum when the spacing between the elements is
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= 0 
= 0, 
w/m2