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An antenna for protecting radio frequency communications includes a masking portion to broadcast a masking signal including a first loop and a second loop connected to the first loop, wherein a current supplied to the masking portion flows in opposite polarity in each of the first and second loops.

An antenna for protecting radio frequency communications includes a masking portion to broadcast a masking signal including a first loop and a second loop connected to the first loop, wherein a current supplied to the masking portion flows in opposite polarity in each of the first and second loops. The antenna includes a reader loop to receive a response signal from a responder and decoupled from the masking signal, wherein the masking signal masks the response signal about the responder.

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1. An antenna comprising: a masking portion to broadcast a masking signal, comprising: a first loop; anda second loop connected to the first loop, wherein a current supplied to the masking portion flows in opposite polarity in each of the first and second loops;a reader loop to receive a response si

1. An antenna comprising: a masking portion to broadcast a masking signal, comprising: a first loop; anda second loop connected to the first loop, wherein a current supplied to the masking portion flows in opposite polarity in each of the first and second loops;a reader loop to receive a response signal from a responder and decoupled from the masking signal,wherein the masking signal masks the response signal about the responder and the first loop defines a first enclosed area and the second loop defines a second enclosed area smaller than the first enclosed area, and the first loop, second loop, and reader loop are in parallel; andat least one adjuster element coupled to at least one of the first loop or the second loop, herein known as the adjustable loop, configured to adjust a size of the enclosed area of the adjustable loop. 2. The antenna of claim 1, wherein the at least one adjuster element adjusts the size of the enclosed area about a phase center point of the adjustable loop. 3. The antenna of claim 1, wherein the first loop, second loop, and reader loop are coplanar and are centered about a phase center point. 4. The antenna of claim 1, wherein the responder is a radio frequency identification (RFID) card or portable electronic device which transmits the response signal in response to an interrogation signal transmitted by the reader loop. 5. The antenna of claim 4, wherein the interrogation signal includes a request for information and the response signal includes the information. 6. The antenna of claim 1, wherein the masking signal is at least 10 times stronger than the response signal. 7. The antenna of claim 1, wherein the masking signal is generated based on the response signal. 8. The antenna of claim 1, wherein the masking signal appears as noise to mask the response signal. 9. The antenna of claim 1, wherein the masking signal is generated based on another response signal from at least one other antenna in the area about the responder. 10. The antenna of claim 1, further comprising: a trimmer to control a proportion of the current supplied to each of the first and second loops. 11. A method for protecting RF communications using an antenna having a reader loop, a first loop and a second loop, comprising: generating an interrogation signal;receiving a response signal in the reader loop of the antenna;providing a current to a first loop of the antenna and a second loop of the antenna coupled to the first loop, the current being of reverse polarity between the first and second loops;decoupling the first loop and the second loop from the reader loop of the antenna in the radio frequency domain; andgenerating a masking signal using the first loop and the second loop to mask the response signal within the area about the responder; wherein said decoupling comprises:at least one of: adjusting a size of a first enclosed area of the first loop about a phase center point of the first loop or controlling a size of a second enclosed area of the second loop about a phase center point of the second loop,wherein the second enclosed area is smaller than the first enclosed area, the first and second loop are coplanar and parallel to the reader loop. 12. The method of claim 11, wherein said decoupling comprises controlling a proportion of the current to each of the first loop and the second loop. 13. The method of claim 11, wherein the response signal originates from an RFID card or portable electronic device and said receiving a response signal comprises receiving identification information from the RFID card or portable electronic device. 14. The method of claim 11, wherein said generating a masking signal comprises generating the masking signal to appear as noise. 15. The method of claim 11, wherein said generating a masking signal comprises generating the masking signal based on the response signal. 16. The method of claim 11, wherein said generating a masking signal comprises generating the masking signal based on another response signal from at least one other antenna in the area about the antenna. 17. The method of claim 11, wherein said generating a masking signal comprises generating the masking signal to be at least 10 times stronger than the response signal. 18. A radio frequency identification (RFID) system comprising: an antenna comprising: a masking portion to broadcast a masking signal, comprising: a first loop; anda second loop connected to the first loop, wherein a current supplied to the masking portion flows in opposite polarity in each of the first and second loops;a reader loop to receive a response signal from a responder and decoupled from the masking signal,wherein the masking signal masks the response signal about the responder; and at least one adjuster element coupled to at least one of the first loop or the second loop, herein known as the adjustable loop, configured to adjust a size of the enclosed area of the adjustable loop. 19. The RFID system of claim 18, wherein the first loop defines a first enclosed area and the second loop defines a second enclosed area smaller than the first enclosed area, and the first loop, second loop, and reader loop are parallel. 20. The RFID system of claim 18, wherein the at least one adjuster element adjusts the size of the enclosed area about a phase center point of the adjustable loop. 21. The RFID system of claim 18, wherein the antenna is mounted on a portable electronic device. 22. The RFID system of claim 21, wherein the portable electronic device includes an RFID card. 23. The RFID system of claim 18, further comprising: a masking signal generator coupled to the masking portion to generate the masking signal. 24. The RFID system of claim 18, further comprising; a responder signal processor coupled to the reader loop to generate an output signal including identification information included in the response signal. 25. The RFID system of claim 18, further comprising: an interrogation signal generator coupled to the reader loop to generate a request for information from the responder. 26. The RFID system of claim 18, further comprising: a trimmer to control a proportion of the current supplied to each of the first and second loops.