Abstract
This paper presents the basic characteristics of a beam tilting slot antenna element whose forced resonance is realized by reactance loading; its structure complements that of a dipole antenna element. The radiation pattern is tilted using a properly determined driving point position; a single loading reactance is used to obtain the forced resonance without great changes in the tilt angle. Numerical results show that the reactance element needs to be loaded near the driving point in order to obtain the forced resonance of the antenna and the minimum changes in the beam tilt angle at the same time. When the proposed forced resonant beam tilting slot antenna with a 0.8λ length is driven at -0.2λ from the center, the main beam tilt angle of 57.7 degrees and the highest power gain of 3.8dB are obtained. This slot element has a broad bandwidth, unlike the complementary dipole element.
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