Read Range Performance of UHF RFID Reader Antenna
Venkata Raviteja. K1, K. S. N. Murthy2, I. Govardhani3, M. Venkata Narayana4
1Venkata Raviteja K., M.Tech Project Student, Department of ECE, K L University, (A.P), India.
2Dr. K. S. N. Murthy, Professor, Department of  ECE, K L University, (A.P), India.
3I.Govardhani, Research Scholar, Department of  ECE, K L University, (A.P), India.
4M.Venkata Narayana, Associate Professor, Head of the Department of SED-1,  K L University, (A.P), India.
Manuscript received on March 01, 2012. | Revised Manuscript received on March 26, 2012. | Manuscript published on April 30, 2012. | PP: 151-155 | Volume-1 Issue-4, April 2012 | Retrieval Number: D0346041412/2012©BEIESP

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Abstract: Now a days ultrahigh frequency (UHF) radio frequency identification has gaining popularity because of its rapid development in automated identification of objects wirelessly and having wide range of applications. Radio frequency identification (RFID) is a technology that uses radio waves to transfer data from an electronic tag called RFID tag or label attached to an object through a reader for the purpose of identifying and tracking the object. The tag’s information is stored electronically. It includes a small RF transmitter and receiver. An RFID reader transmits an encoded radio signal to interrogate the tag. The tag receives the message and responds with its identification information. In this paper, the read range capabilities of proposed antenna at UHF range are determined. By using the proposed antenna we simulate return loss, gain, Vswr and radiation patterns using HFSS software. 
Keywords: Radio frequency identification (RFID), Reader antenna, Ultrahigh frequency (UHF), Near-field, Far-field.