cardioid.nec

zip contains tool for Antenna Modelling with examples

CM Cardioid, converted with 4nec2 on 29-mrt-06 14:37
CM 	Cardioid
CM A popular phased array, the 90-degree phased,
CM quarter-wavelength spaced, two-element array is effective
CM and forgiving, and gives an honest 3 dB gain over a single
CM element. It's modeled here over perfect ground to point out
CM the small reverse lobe which doesn't usually show up in the
CM textbooks. This is due to the change in current
CM distribution on the elements from mutual coupling effects.
CM See July 1990 QST, page 39, for more information on this
CM phenomenon and its consequences. The current sources
CE
'sy len=0.242	'Original
sy len=0.2494	'Resonance
GW 1 6 0 0 0 0 0 len 1.21e-4
GW 2 6 0.25 0 0 0.25 0 len 1.21e-4
GE 1
EX 6 1 1 0 1 0
EX 6 2 1 0 6.123e-17 -1
GN 1
FR 0 1 0 0 299.7925 0
EN