FM transmission using a RFID/NFC coil antenna
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United States of America Patent
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Dec 17, 2013
Grant Date -
Jul 19, 2012
app pub date -
Jan 17, 2011
filing date -
Jan 17, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An antenna radiating element is arranged as at least one coil and defines a first feed port and a second feed port at its opposed ends. There is a third feed port disposed along the antenna radiating element substantially at a radio frequency effective symmetry point between the first and the second radio feed ports. The first and second feed ports are for interfacing a first radio (e.g., RFID/NFC radio) to the antenna radiating element, and the third feed port is for interfacing a second radio (e.g., FM-TX) to the antenna radiating element. The antenna radiating element is configured to function simultaneously as a balanced coil antenna with respect to the first radio and as two parallel half-loop antennas with respect to the second radio.
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Cited Art Landscape
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