Abstract: In this paper, a monopole antenna for UHF Radio Frequency Identification (RFID) is acquainted. A slotted Z-shaped monopole disposition is selected and fabricated using printing technology on a flexible, cheap paper substrate utilizing a simple, fast, and eco- friendly process. The design characteristics of the antenna are verified and the simulated results are compared with measurements showing good agreement. Here HFSS 13.0 tool is taken as investigating tool.