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The model for a compact bandpass filter which has multi-section structure and equivalent elements of package is proposed in this paper. With six vertical via-holes and three planar coupled lines, a multi-section coupled line is available. There are wide upper stopband and multi transmission zeros in the proposed design. This device is implemented in a low temperature co-fired ceramic substrate with...
In this paper, a compact bandpass filter with wide stopband is proposed based on slow-wave coplanar-waveguide (CPW) resonators. The resonator consists of conventional and tapered CPW sections with short-stub. Such resonator can not only allocate the adjustable fundamental resonance f0, but also introduce the slow-wave effect which pushes spurious to the upper band. Based on the resonator, two types...
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