• Mirza Amer Baig
• Dr G. Ravi Kumar
• Korani Ravinder

As a vital and integrated part of the radiofrequency identification (RFID) system, RFID antennas have been received much attention over years, and their design is very urgent and significant. In fact, the development of RFID antenna is of theoretical significance and practical value for the RFID system. This paper presents the design of microstrip rectangular patch antenna, using inset line feeding, with center frequency at 2.45 GHz for RFID applications. The patch antenna is fabricated on the substrate type FR-4, with dielectric constant of 4.4 and thickness of 1.58 mm respectively and fed by a 50- microstrip line. Initially, we set our antenna as a single patch and after evaluating the outcomes of antenna features (S11, VSWR, antenna gain and directivity), then we transformed it to 2*1 linear antenna array. Finally, we analyzed the 4*1 linear antenna array to increase directivity, gain and have better radiation patterns.

Adaptation; micro strip antenna; radiation pattern, return loss, Voltage Standing Wave Ratio, gain, directivity, HFSS, CST.

"AUTOMATIC RETAIL STORE SYSTEM USING RFID AND ZIGBEE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.577-584, December-2018, Available :http://www.jetir.org/papers/JETIR1812483.pdf

"AUTOMATIC RETAIL STORE SYSTEM USING RFID AND ZIGBEE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp577-584, December-2018, Available at : http://www.jetir.org/papers/JETIR1812483.pdf