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For the first time, a 3-dimentional (3-D) transmission line dual-mode resonator is proposed by using the low temperature co-fired ceramic (LTCC) technology. The proposed dual-mode resonator is reasonably folded in both vertical and horizontal directions for constructing a miniaturized bandpass filter (BPF), which overcomes the vital shortcoming of large circuit size of the LTCC distributed-element...
In order to reduce the size of dual-mode microstrip filters by keeping excellent performance, novel filter geometry is proposed. The novel filter includes a dual-mode resonator based on a meander structure. The effect of input/output feed lines located along a straight line on filter response is investigated for the dual-mode filter. The coupling between degenerate modes of the proposed dual-mode...
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