International Conference on Agriculture, Technology, Engineering and Sciences (ICATES 2018), Lviv, Ukrayna, 19 - 21 Eylül 2018, ss.174-180
A compact PIFA (Planar Inverted F Antenna) design (40 × 60 × 10.71 mm3) based on Split-Ring Resonators (SRRs) with meandered slots is presented for dual and Ultra-Wideband (UWB) applications. The antenna includes WLAN, DCS 1800, PCS 1900, IMT-2000 and GPS bands with UWB and dual frequency characteristics between 1.72 − 2.43 GHz and 3.46 − 9.73 GHz frequencies. Two concentric SRRs with meandered slots are used as main radiator of the antenna to achieve miniature compact antenna configuration providing dual ultra-wideband performance. The location of the paths between SRRs are chosen to obtain fine frequency tuning. The feeding and shorting plate width optimizations are also utilized for UWB design. In addition, the meandered-shaped lines on SRRs ensure extra miniaturization by extending the current path. They can easily tune frequency response as well as help a small bandwidth enhancement. The maximum realized gains of the antenna are about 3 and 5 dB for the first band and UWB band, respectively. While the proposed antenna exhibits directional and uniform radiation pattern at the first band, the pattern is generally omnidirectional and non- uniform for the UWB band.