A novel compact dual band RFID handheld reader antenna for microwave ISM band application

This paper presents a new design of dual band RFID reader antenna for ISM-band industrial science and medical applications at 2.4 GHz 5.8 GHz. Theantenna is designed physically built using FR4 substrate taking 1.5 thickness, 4.3 relative permittivity 0.025 loss tangents. Different slots havebeen introduced to reduce the dimensions achieve bandfor microwave ISM application. The dimension proposed 34 × mm3, which it could be easily integrated into readers.Numerical simulations have been performed usingcomputer simulationtechnology (CST) Microwave Studio software. A parametric study wasinvestigated in order show effect variation obtain desiredfunctional characteristics. Experimental results good agreement withresults obtained by simulations. satisfactorily omnidirectional radiationpatterns across operation bands was obtained.