A "TESLA SHIELD" BY FOURIER SYNTHESIS

The idea that a Tesla shield might be constructed by the generation of an
electromagnetic antichirp is interesting, but suffers from the fundamental 
problem of requiring a medium in which propagation velocity is dependant 
on frequency.  If we are to stand even the remotest chance of constructing 
a Tesla shield which is of any practical use, then hoping that free space 
is nonlinear will not suffice.

The essential requirement is to arrange for an incredibly intense field to 
be generated at a remove from the transmitting apperatus, without a 
substantial field closer to the centre.

If we superimpose a series of cosine waves thus:

cos(x)+cos(3x)+cos(5x)+cos(7x)+cos(9x)

then it will be noted that the resultant curve has an amplitude mostly of 
less than unity, but with peaks of 4.5, spaced at half wavelengths of the 
fundamental.

If we could arrange matters such that the origin is at a few dozens of 
feet from the transmitter, such that the radiating structure lies between 
two of these peaks, then the desired field disposition might be achieved.  
Due to the fall off of field strength with distance, it may be possible to 
arrange that the second peak away from the transmitter be insufficiant to 
create the phenomenon at that point, but retain the effect at the first 
peak.