Radio frequency identification (rfid) antenna and communication system

A radio frequency identification (RFID) communication system comprising:

• an RFID antenna, wherein the RFID antenna comprise a printed circuit board (PCB) and the PCB comprises:
• a substrate;
• an etched metal layer on the substrate, wherein the etched metal layer comprises:
• a radiating element positioned on the substrate having a loop structure, wherein the loop structure comprises two first chamfered edges, and the first two chamfered edges are positioned on opposite corners of the loop structure;
• and
• a ground element positioned on the substrate having a slotted structure that is concentric with the loop structure and is positioned in an inner region of the loop structure.

A radio frequency identification (RFID) antenna, comprising a printed circuit board (PCB), wherein the PCB comprises:

• a substrate;
• an etched metal layer on the substrate, wherein the etched metal layer comprises:
• a radiating element positioned on the substrate having a loop structure, wherein the loop structure comprises four first chamfered edges positioned in four corners of the loop structure and four second chamfered edges positioned on the four corners of the loop structure;
• and
• a ground element positioned on the substrate having a slotted structure that is concentric with the loop structure and positioned in an inner region of the loop structure, wherein the slotted structure further comprises four third chamfered edges on the four corners of the slotted structure.