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Sökning: WFRF:(Wu Xiaopo)

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1.
  • Du, Yijun, et al. (författare)
  • Design of Sharp Roll-Off Band Notch with Fragment-Type Pattern Etched on UWB Antenna
  • 2018
  • Ingår i: IEEE Antennas and Wireless Propagation Letters. - 1536-1225 .- 1548-5757. ; 17:12, s. 2404-2408
  • Tidskriftsartikel (refereegranskat)abstract
    • Fragment-type etch patterns are proposed and designed on ultra-wideband planar antenna to acquire sharp roll-off band notch. Multi-objective evolutionary algorithm is applied to achieve the optimization searching of the best fragment-type etch pattern by setting multiple objectives to acquire the exact notched band and challenge the roll-off criterion (ROC) of band notch. Efficiency of the design can be improved by properly presetting slits on the patch radiator. For demonstration, designs with different slit presetting are implemented and tested. With single slit preset, band notch of ROC=0.72 at the WLAN band ranging from 5.15 GHz to 5.85GHz is acquired. 
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2.
  • Du, Yijun, et al. (författare)
  • Design of ultra-wideband antenna with high-selectivity band notches using fragment-type etch pattern
  • 2020
  • Ingår i: Microwave and optical technology letters (Print). - : Wiley. - 0895-2477 .- 1098-2760. ; 62:2, s. 912-918
  • Tidskriftsartikel (refereegranskat)abstract
    • By specifying objective functions defining the two bands to be notched with high roll-off criteria (ROCs), optimization searching for the best fragment-type etch pattern on ultra-wideband (UWB) antenna is implemented by using multi-objective optimization. The optimization with too many objective functions requires special treatment to improve the searching efficiency. In this design, two slits are preset on appropriate positions on different sides of the UWB radiator to constrain the decision space for etch pattern searching and yield two initial notched bands to speed up the optimization. For demonstration, a UWB patch antenna is designed with dual-band notches of ROC = 0.63 at WiMAX band and ROC = 0.65 at WLAN band. Both the simulation and measurement results indicate that there is significant improvement of the selectivity of the dual-band notches.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
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refereegranskat (2)
Författare/redaktör
Sidén, Johan, 1975- (2)
Wang, Gang (2)
Du, Yijun (2)
Wu, Xiaopo (2)
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Mittuniversitetet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Teknik (2)

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