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A co-planar waveguide (CPW) structure is proposed and implemented for notched band designing of ultra-wideband (UWB) bandpass filter (BPF) in this paper. This structure can be easily designed and applied for multiple notched bands, and the size of filter will not be increased. As the starting work of this letter, a single notched band has been constructed and the theory of it will be proposed, and...
A novel miniaturised dual-mode bandpass filter with multi-arc resonators is proposed. The size of the dual-mode filter can be reduced significantly by using the microstrip dual-mode resonator consisting of multi-arcs; meanwhile insertion loss and spurious response suppression are improved A prototype filter is designed and implemented at 3.6 GHz with 2.8% fractional bandwidth, which shows a low passband...
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