Abstract
In this letter, a novel variable power divider, which provides wide-range variable power division, is proposed. The proposed power divider consists of a magic-T, variable phase shifter, and 90° delay line. The operating principle of the proposed circuit is theoretically discussed, and a 5-GHz band prototype using a planar magic-T is designed and experimentally evaluated. The measured power division range is more than 14 dB with a small phase difference variation of less than 15°. The concept and feasibility of the proposed variable power divider are experimentally confirmed.
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