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This paper presents a novel dual-band bandpass filter design based on hybrid structure of substrate integrated waveguide (SIW) and substrate integrated coaxial line (SICL), which is implemented by multi-layer printed circuit board process. The hybrid structure is realized by inserting the SICL resonator into the volume of the SIW cavity which enables the hybrid structure to support the co-transmission...
In this letter, an X‐band wide stopband bandpass filter is presented, which combines substrate integrated waveguide with defected ground structure (DGS) cells. Three DGS cells, including a pair of face to face modified dumbbells embedded with E‐shape slots, are adopted to achieve bandpass performance. The wide stopband is implemented by loading low pass filter, which is designed using stepped impedance...
In this paper, a compact diplexer using substrate integrated waveguide (SIW) resonators is introduced. The diplexer consists of two filters and a circulator. The diplexer channels are 4% and 5% relative bandwidth at 32GHz and 33GHz, respectively. The filters are based on SIW resonators, which have higher Q values. This paper also analyzed the factors which affect the Q value of resonators, and describes...
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