A compact Dual-Band RFID Planar Antenna Loaded with SRR Unit Cell of Metamaterial for Remote Healthcare Applications

In this paper., a miniaturized dual-band tag antenna has been recommended for radio frequency identification (RFID) and remote healthcare applications. This antenna contains a split-ring resonator (SRR) and meanders lines that are connected with the Philips RFID/ ASIC chip. The SRR generates the second resonant frequency, which helps to produce two modes of operation. Furthermore, the physical volume of the recommended tag is 16x23x1.6 mm3, The equivalent circuit scheme of this structure is extracted to study its working mechanism in the two bands. The analysis results display that the antenna offers an important impedance matching at the operating bands (2.3-2.5 GHz) and (5.78-6 GHz) with two resonant frequencies of 2.45 GHz and 5.8 GHz. All these frequencies show a dipolar type pattern in the E plane and omnidirectional pattern in the H plane. The recommended structure achieves a good performance and support the multi standards for wireless devices.