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A wideband differential bandpass filter with enhanced common mode suppression and better out of band performance is presented in this paper. This filter consists of two back to back connected stepped impedance resonators (SIRs) coupled to each other through two dumbbell shaped slotline resonators. The size of the filter is 22 mm × 43 mm. The proposed filter has the differential passband bandwidth...
In this letter, a compact octagonal shaped fractal ultrawideband multiple-input–multiple-output antenna is presented, and its characteristics are investigated. In order to achieve the desired miniaturization and wideband phenomena, self-similar and space filling properties of Koch fractal geometry are used in the antenna design. These fractal monopoles are placed orthogonal to each other for good...
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