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  • Open Access


    Design of Miniature UWB-Based Antenna by Employing a Tri-Sectional SIR Feeder

    Ehab Dh. Hussein1,*, Yaqeen S. Mezaal2, Oguz Bayat1

    Computer Systems Science and Engineering, Vol.41, No.3, pp. 1157-1172, 2022, DOI:10.32604/csse.2022.021205

    Abstract A novel ultra-wideband (UWB)-based microstrip antenna is presented in this work by using a slotted patch resonator, a tri-sectional stepped impedance resonator (SIR) feeder, as well as a reduced ground plane. The whole structure was realized on an FR4 substrate. The impact of incorporating several cases of ground planes on the input reflection has been thoroughly investigated under the same tri-sectional SIR feeder and by employing a slotted patch radiator. Since the complete ground plane presents an inadequate frequency response, by reducing the ground plane, the induced UWB responses are apparent while the antenna exhibits higher impedance bandwidth. The impact… More >

  • Open Access


    A Novel Broadband Microstrip Antenna Based on Operation of Multi-Resonant Modes

    Taohua Chen1, Yueyun Chen1,*, Rongling Jian1, Zushen Liu2, Alan Yang3

    CMC-Computers, Materials & Continua, Vol.60, No.1, pp. 335-349, 2019, DOI:10.32604/cmc.2019.07073

    Abstract A novel broadband microstrip antenna under operation of TM1/2,0, TM10 and TM12 modes through a shorting wall and slots is proposed in this paper. Initially, an inverted U-shaped slot is adopted around the feeding point, which achieves a good impedance matching on TM10 mode and separates the patch into two parts. Additionally, a shorting wall is added underneath the edge of smaller patch to excite another one-quarter resonant mode, i.e., TM1/2,0 mode of smaller patch close to TM10 mode to expand the impedance bandwidth. Further, the antenna width is enlarged and two symmetrical vertical rectangular slots are cut on the… More >

  • Open Access


    Gyro-Chirality Effect of Bianisotropic Substrate on the Resonant Frequency and Half-power Bandwidth of Rectangular Microstrip Patch Antenna

    CMC-Computers, Materials & Continua, Vol.52, No.2, pp. 123-131, 2016, DOI:10.3970/cmc.2016.052.123

    Abstract In this paper, the gyrotropic bi-anisotropy of the chiral medium in substrate constitutive parameters (xc and hc) of a rectangular microstrip patch antenna is introduced in order to observe its effects on the complex resonant frequency and half-power bandwidth. The analysis is based on the full-wave spectral domain approach using the Moment Method, with sinusoidal type basis functions. The numerical calculations related to the dominant mode have been carried out, and it has been observed that the resonant frequency and the bandwidth are directly linked to the medium chirality. The new results can be considered as a generalisation form of… More >

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