Design of a handheld UHF RFID quasi yagi microstrip antenna using meander line bridge frequency selective surface

This paper presents a quasi yagi microstrip antenna which is backed by meander line bridge Frequency selective surface (MBFSS) for a handheld UHF RFID reader. Long read range handheld reader antennas have been usually packaged outside of the reader units in most cases due to the mutual coupling and environment effect. In the proposed antenna, we reduce such effects by placing MBFSS under the quasi yagi antenna, so that the antenna is packaged inside the reader module with long read range. The proposed antenna has been simulated and measured using some measurement setups. In measurement result, 4.8dBi gain, 10.2dB front-to-back ratio and VSWR<;1.5 have been obtained in 100MHz band centered around 915MHz. Return loss at the center frequency is -46.5dB.