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This article presents the design of a highly miniaturized wideband bandpass filter. The proposed filter unit consists of 3λ/4 resonator loaded with stepped impedance section of short-ended stub. The required scattering parameters are derived using even-odd mode analysis. For validation, a prototype of the proposed filter is fabricated and tested. The overall area of the prototype is 0.25λg × 0.14λ...
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