AN78010 - NXP.com

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Philips Semiconductors Rev. 1.0 November 200213.56 MHz RFID Proximity Antennas mifare ® (14443A)6.2 Parameters and UnitsV ind:Induced voltageN: Number of turnsΦ: Magnetical Fluxt: timeB: Magnetical Flux densitiyA: (Coil) AreaV 20 :I 1 :Induced open loop voltage (card antenna coil)PCD antenna coil currentM: Mutual inductance (transformer model)L: Inductancer: PCD antenna radiusx: PCD-PICC operating distancek: coupling coefficientL 01 , L 02 : Single turn inductanceIndex 1 is used for the PCD antenna.Index 2 is used for the PICC antenna. Parameter with index 2 are fixed (according to the ISO14443-1).24 PUBLIC
DefinitionsData sheet statusObjective specificationThis data sheet contains target or goal specifications for product development.Preliminary specification This data sheet contains preliminary data; supplementary data may bepublished later.Product specificationLimiting valuesThis data sheet contains final product specifications.Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stressabove one or more of the limiting values may cause permanent damage to the device. These are stressratings only and operation of the device at these or at any other conditions above those given in theCharacteristics section of the specification is not implied. Exposure to limiting values for extendedperiods may affect device reliability.Application informationWhere application information is given, it is advisory and does not form part of the specification.Life support applicationsThese products are not designed for use in life support appliances, devices, or systems where malfunction ofthese products can reasonably be expected to result in personal injury. Philips customers using or sellingthese products for use in such applications do so on their own risk and agree to fully indemnify Philips forany damages resulting from such improper use or sale.
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AN78010 - NXP.com

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