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In this paper, a novel spurious-free differential bandpass filter (BPF) based on the hybrid dielectric resonator (DR) and coaxial resonator (CR) is proposed for the first time. The dominate $\text{TE}_{01\delta}$ mode of the DR cavity (fed by a pair of face-to-face probes) and the fundamental TEM mode of the CR cavity are used for constructing the passband of the differential BPF, while the spurious...
This paper introduces an effective approach for differentially exciting the cylinder dielectric resonator (DR), which lays a foundation for designing differential DR bandpass filter (BPF). By analyzing the mode properties of the cylinder DR in differential topology, it can be found that the resonant modes of the DR cavity can be divided into two kinds of responses, i.e. differential-mode (DM) and...
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