Patent ID: 7714794

Claim:
An antenna for use in a radio frequency identification (RFID) transponder, the antenna comprising: a first half portion and a second half portion each including: a straight conductive section defining a radiating characteristic of the antenna; a first spiral conductive section and a second spiral conductive section coupled to the straight conductive section creating a positive reactive characteristic of the antenna, the first spiral conductive section spiraling in an opposite direction than the second spiral conductive section and being positioned on an opposite side of the straight conductive section than the second spiral conductive section, the first spiral conductive section and the second spiral conductive section each coupled to the straight conductive section at the same point on the straight conductive section; and said straight conductive section having a feed point where the antenna can be connected into the RFID transponder; and said straight conductive section connecting with its respective spiral conductive sections, thereby having said first half portion and said second half portion characterize the antenna as being of a dipole type; and a loop section connecting said straight conductive sections of said first half portion and said second half portion.