Low SAR PIFA Antenna for Wideband Applications
Virdee, Bal Singh
- Publisher: Taylor & Francis Online
In this article, a novel low specific absorption rate (SAR) printed planar invert-F antenna (PIFA) antenna for wideband application is presented. The prototype antenna was designed to cover the frequency range between 1200 and 3000 MHz. Its radiation pattern is approximately omnidirectional, VSWR < 2, gain in the range 2–4.6 dBi, and efficiency greater than 78%. The prototype antenna exhibits a low SAR of around 1.04 for 1 g at 1800 MHz, which is less than 51% than a conventional PIFA antenna. The antenna's performance was evaluated using finite element method (FEM) and time domain method (TDM) in electromagnetic (EM) simulation tools like HFSS and CST Microwave Studio. These results are compared with measured data. The antenna's wide band covers various wireless standards like GPS/DCS/GSM1800/PCS/WLAN/Bluetooth/WiMAX/LTE. The parametric studies clarified the effect of the stub line and via's on voltage standing wave ratio (VSWR).
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