This paper presents the simulation and measured results of a triple-band L-shaped monopole antenna with defected ground plane for applications in wireless local area networks（WLANs） and worldwide interoperability fo...This paper presents the simulation and measured results of a triple-band L-shaped monopole antenna with defected ground plane for applications in wireless local area networks（WLANs） and worldwide interoperability for microwave access（WiMAX） bands.The triple-band L-shaped monopole antenna with defected ground plane was fabricated on a FR4 substrate. The lower band is associated with the shorted parasitic strip in the protruding stub of the ground plane; the middle band is expected to be controlled by the longer strip of L-shaped monopole in the front side,while the higher band is associated with the short strip of L-shaped monopole in the front side. The proposed antenna has a good agreement between the measured and the simulation results. It has a 10 d B return loss with the bandwidth of 250 MHz（2270 MHz to 2520MHz） in the lower band, 600 MHz（3320 MHz to 3,920MHz） in the middle band, and 1110 MHz（5030 MHz to6140 MHz） in the higher band. The proposed antenna covers the ISM（industrial, scientific and medical）,HIPERLAN（high performance radio local area network）, UNII（unlicensed national information infrastructure）, and WiM AX bands.展开更多
基金supported by the NSC under Grant No.102-2622-E-262-009-CC3
文摘This paper presents the simulation and measured results of a triple-band L-shaped monopole antenna with defected ground plane for applications in wireless local area networks（WLANs） and worldwide interoperability for microwave access（WiMAX） bands.The triple-band L-shaped monopole antenna with defected ground plane was fabricated on a FR4 substrate. The lower band is associated with the shorted parasitic strip in the protruding stub of the ground plane; the middle band is expected to be controlled by the longer strip of L-shaped monopole in the front side,while the higher band is associated with the short strip of L-shaped monopole in the front side. The proposed antenna has a good agreement between the measured and the simulation results. It has a 10 d B return loss with the bandwidth of 250 MHz（2270 MHz to 2520MHz） in the lower band, 600 MHz（3320 MHz to 3,920MHz） in the middle band, and 1110 MHz（5030 MHz to6140 MHz） in the higher band. The proposed antenna covers the ISM（industrial, scientific and medical）,HIPERLAN（high performance radio local area network）, UNII（unlicensed national information infrastructure）, and WiM AX bands.
