Four-channel band-pass filter of comb-type artificial surface plasmon polaritons
The invention provides a comb-type artificial surface plasmon polariton four-channel band-pass filter which is in a traditional microstrip form and is produced and processed on the upper side and the lower side of a microwave dielectric substrate. A coplanar waveguide formed by a special fan-shaped...
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| creator | SHEN YAFEI HUA NING SHANG HUIFENG DU XIANGYU CHEN YUAN |
| description | The invention provides a comb-type artificial surface plasmon polariton four-channel band-pass filter which is in a traditional microstrip form and is produced and processed on the upper side and the lower side of a microwave dielectric substrate. A coplanar waveguide formed by a special fan-shaped structure and a traditional microstrip line is used as an input/output end of the filter to form a defected ground structure (DGS), so that large-area grounding of the bottom surface is avoided; the trapezoidal comb-shaped SSPP structure with the gradually-changed size is used for completing transition from the coplanar waveguide to the artificial surface plasmon polaritons; a T-shaped dual-mode resonator is loaded on a cascaded comb-type SSPP transmission line, so that a four-channel band-pass filtering effect is realized. In the aspect of performance, space radiation loss is low, insertion loss is small, out-of-band rejection is high, the matrix coefficient is good, and the bandwidth utilization rate is high. In |
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A coplanar waveguide formed by a special fan-shaped structure and a traditional microstrip line is used as an input/output end of the filter to form a defected ground structure (DGS), so that large-area grounding of the bottom surface is avoided; the trapezoidal comb-shaped SSPP structure with the gradually-changed size is used for completing transition from the coplanar waveguide to the artificial surface plasmon polaritons; a T-shaped dual-mode resonator is loaded on a cascaded comb-type SSPP transmission line, so that a four-channel band-pass filtering effect is realized. In the aspect of performance, space radiation loss is low, insertion loss is small, out-of-band rejection is high, the matrix coefficient is good, and the bandwidth utilization rate is high. 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| subjects | BASIC ELECTRIC ELEMENTS ELECTRICITY RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE WAVEGUIDES |
| title | Four-channel band-pass filter of comb-type artificial surface plasmon polaritons |
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