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In order to meet the ever increasing demand for miniaturization of RF and microwave filters, the suitability of fractal resonators has been examined and a complete design method of miniaturized fractal filters has been developed. It is shown that fractal resonators can significantly be smaller than conventional planar resonators for the same resonant frequency requirements. It is also seen that when...
We present a miniaturization technique for square dual-mode resonators. By using the Minkowski fractal iteration it is possible to obtain compact resonators. Furthermore the second harmonic is highly attenuated, thus enhancing the rejection in the upper band. A 4th order filter using two dual-mode fractal resonators has been fabricated to illustrate these results. We use the suspended substrate technology...
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