Table 2: Comparison of proposed antenna with other several designs.

ReferenceSize (mm3)Metal plate size (mm2)Read range (m) 
(metal/dielectric)
Tunable

This work50 × 25 × 2200 × 2006.5/4.5Yes
[14]56 × 25 × 3.5500 × 5004/-No
[15]55 × 41.5 × 3200 × 2006.1/14No
[16]88 × 60 × 0.76150 × 1505.4/5.7 (body)No
[17]30 × 30 × 3200 × 2007/3.5No
[18]84 × 41 × 3.2200 × 2005.6/8No