Resonant Compensating Loop for Shielding of Metal for Magnetically Coupled NFC and/or RFID Devices, and Methods of Making and Using the Same
First Claim
1. A near field communication device, comprising:
- a) a receiver configured to convert a first near field signal to an electric signal;
b) a transmitter configured to generate a second near field signal;
c) a dielectric substrate within a housing;
d) an antenna on said dielectric substrate, said antenna receiving said first near field signal and transmitting or broadcasting said second near field signal; and
e) a compensating loop within said housing and coupled to said antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
A near field communication device, and methods of manufacturing and using the same are disclosed. The near field communication device includes a receiver configured to convert a received near field signal to an electric signal, a transmitter configured to generate a transmittable near field signal, a dielectric substrate within a housing, an antenna on the dielectric substrate, and a compensating loop within the housing and coupled to the antenna. The antenna is configured to receive the received near field signal and to transmit or broadcast the transmittable near field signal. The compensating loop is electromagnetically coupled to the antenna and advantageously mitigates or counteracts an electromagnetic effect of metal on or near a surface of the dielectric substrate opposite from the antenna.
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Citations
27 Claims
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1. A near field communication device, comprising:
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a) a receiver configured to convert a first near field signal to an electric signal; b) a transmitter configured to generate a second near field signal; c) a dielectric substrate within a housing; d) an antenna on said dielectric substrate, said antenna receiving said first near field signal and transmitting or broadcasting said second near field signal; and e) a compensating loop within said housing and coupled to said antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 25, 26, 27)
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11. A method of manufacturing a near field communication device, comprising:
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a) forming an antenna on a dielectric substrate, said antenna receiving a first near field signal and transmitting or broadcasting a second near field signal, and coupled to a receiver and a transmitter; and b) forming a compensating loop configured to be electromagnetically coupled to said antenna, that mitigates or counteracts an electromagnetic effect of metal on or near a surface of said dielectric substrate; wherein said antenna, said dielectric substrate and said compensating loop are formed or placed in a housing of the near field communication device. - View Dependent Claims (12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification