There is NO free lunch!!
To verify the presence or absence of coupling between the two co-planar resonant loops, I mounted two spiral-wound loops "edge-to-edge".? Loop "A" was resonant at the frequency of the incident radio signal.and drove the receiver via a one-turn coupling loop.? The second loop (Loop "B") drove a dummy load via its coupling loop.? The resonant frequency of Loop "B" was adjusted while observing the signal level indicated on the receiver "S" meter, The received signal dropped as the resonant frequency of Loop "B" approached that of Loop "A", indicating the presence of significant magnetic coupling between the two loops when at a common resonant frequency.? After a little thought, I realized that I had built a grid-dip meter!
While the existance of this coupling invalidated my proposed two-loop scheme, in the interest of completeness I then connected the coupling loop of Loop "B" in series with that of Loop "A" and observed the receiver "S" meter as the position of Loop "B" in relation to Loop "A" was varied.? The best I could do was an indicated signal level equal to that with Loop "A" alone connected to the receiver.? Any other position or rotation of Loop "B" resulted in lower signal.??
Unfortunately, I do not have enough room to locate the two loops far enough apart to eliminate the magnetic coupling, so the approach of using an array of widely-spaced loops and a phase aligning network is out of the question for my case.
Thanks to all for their comments and recommendations
John
Dexter