In Antenna Toolbox, is it possible to design a type of ESPAR (Electronically Steerable Passive Array Radiator) antenna?
ESPAR antenna consists of one fed element (active element) and several parasitic (non-fed) elements.
The parasitic elements are conntected by variable capacitor to change the reactance of the element to form a desired directivity.
As I checked, Yagi-Uda antenna model cannot set capacitance connected to directors or reflectors.
Also, in array antenna model, any antenna elements need to be fed. In other words, no parasitic element is set in the model.
Which model or in which way, we can design such type of antennas.