Ultra-broadband impedance matched electrically small complementary signal radiating structures using thin wire elements and an impedance optimizing feed circuit

摘要

Ultra-broadband impedance matched electrically small complementary- pair antennas using thin wire elements with impedance optimizing feed are presented. Efficiencies are determined by achieveable loss resistances in the radiating structure itself, rather than the (limited) quality of an external loading coil; and by energy channeled into the difference port of the feed hybrid, that is used to match two complementary impedances. Broad and impedance loci are achieved for the thin radiators by horizontal feed bars placed prior to the complementarizing circuit. Impedance matching is then accomplished in a standard broadband hybrid or "Magic Tee" feed circuit, which combines either two identical elements, where one has been "complementarized", or there are twoself-complementary elements, such as a monopole and a half- loop.