Patent ID: 7202790

Claim:
A security tag, comprising: a substrate having a surface; a lead frame to mount on said surface, said lead frame having a first side and a second side; an integrated circuit to connect to said lead frame; an antenna disposed on said surface, said antenna to comprise a first antenna portion and a second antenna portion, said first antenna portion to connect to said first side and said second antenna portion to connect to said second side, wherein said antenna is tuned to an operating frequency by modifying a first length for said first antenna portion and a second length for said second antenna portion after said antenna portions are disposed on said surface; wherein each portion has a first antenna end and a second antenna end, said first antenna end to connect to said lead frame, said first antenna portion to form an inwardly spiral pattern from said integrated circuit in a first direction, and said second antenna portion to form an inwardly spiral pattern from said integrated circuit in a second direction, wherein said first and second directions are in opposite directions; wherein each antenna portion may be divided into multiple antenna segments at multiple segment points and each segment point corresponds to an operating frequency for said antenna; and wherein each segment point for a corresponding operating frequency may vary according to a substrate and object.