This illustrates a cardioid array fed using the modified phasing line approach described in sec. 3.4.3 of _ON4UN's Low-Band DXing_, 5th Edition. Quarter wave 50 ohm transmission lines (Transmission Lines 1 and 2) are connected to each element feed point. A 3.0 uH inductor (Load 3) is placed across the input end of the line going to the lagging element (Wire 2). The reactance of the inductor in parallel with the transformed element impedance at that point results in a combined impedance of about 36.25 + j0. This allows a 37.5 ohm "delay line" consisting of two 75 ohm transmission lines in parallel (Transmission Line 3) to be used to effect the desired phase shift between elements, since this "delay line" is terminated in nearly its characteristic impedance. The shunt inductor does take some of the current which would otherwise go into the element 2 quarter wavelength feed line, but because of its position one quarter wavelength from the element, it doesn't alter the current into the element itself.

Don't be misled into thinking that other feed phase angles can be achieved (while maintaining equal magnitude element currents) by simply changing the "delay line" length. If the phase angle between elements changes, so do the element feed point impedances. The change in element 2 impedance in turn changes the required shunt component value and very likely also the required "delay line" characteristic impedance.
