期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2015
卷号：8
期号：8
页码：73-78
DOI：10.14257/ijsip.2015.8.8.08
出版社：SERSC
摘要：This paper presents a tri-band rectangular slotted circular micro strip antenna for wideband applications. The antenna operates at 2.96, 6.42 and 7.33 GHz frequency bands for VSWR<1 with an improved impedance bandwidth of 41.23%. The antenna has been designed and simulated on an FR4 substrate with dielectric constant (ε r ) of 4.4 with an overall size of 50 × 40 × 3.5 mm 3 . The study of bandwidth improvement is presented in this paper by introducing the slots on surface of circular patch. The measured bandwidths for -10 dB reflection coefficient are 410 MHz (2.80-3.21 GHz) and 3.07 GHz (5.91-8.98 GHz). The simulated results show that the proposed antenna provides good performance in term of return loss and radiation pattern for wideband applications
