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In this paper, the Natural Science Foundation of Hebei Province project \First, from the theoretical analysis , numerical simulation and experimental measurements three summarizes the impact impedance method on vector matching method the tower impedance characteristics curve fitting method , and applications (pq) port gyrator establish tower port network impedance model . And then apply the above method to establish a the DCJ tower , wine glass tower and SZT tower , the two-port model . By contrast, it is determined rational function of order to achieve minimum error . Finally, the equivalent two-port circuit model of the three towers , built in PSPICE simulation of this two-port model port characteristics .
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