Ground Antenna Array Zeros
\psi ~=~ ( 2 \pi d / \lambda ) \sin( \phi ) ~~~~~ where \phi is the angle from zenith
Power ~=~ \Large \left( { \sin( N \psi / 2 ) } \over { N \sin( \psi / 2 ) } \right)^2 ~ ~ ~
\psi ~=~ ( 2 \pi d / \lambda ) \sin( \phi ) ~~~~~ where \phi is the angle from zenith
Power ~=~ \Large \left( { \sin( N \psi / 2 ) } \over { N \sin( \psi / 2 ) } \right)^2 ~ ~ ~