Jim Kelley wrote:
Evidently then you haven't adequately familiarized yourself with the
nature of the equations that you use.

The last term in the following power density equation
is known as the "interference term". If it is positive,
the interference is constructive. If it is negative,
the interference is destructive.

Ptotal = P1 + P2 + 2*SQRT(P1*P2)cos(A)

Ptotal = 50w + 50w + 2*SQRT(2500)cos(45)

Ptotal = 100w + 100w(0.7071) = 170.71w

The interference term is 70.71 watts of constructive
interference indicating that there must exist 70.71 watts
of destructive interference elsewhere in the system.
If the constructive interference happens at an impedance
discontinuity in a transmission line in the direction of
the load then there must be an equal magnitude of
destructive interference toward the source.
--
73, Cecil http://www.w5dxp.com