preliminary L158.a (07/13) 1 pulseelectronics.com/products/antennas small planar nfc antenna with ferrite pulse part number w7013 san diego, ca 858 674 8100 vancouver, wa 360 944 7551 europe 49 7032 7806 0 asia 86 755 33966678 north asia 886 3 4356768 china 86 512 6807 9998 frequency [mhz]* 13.56 reading distance on ground [mm]* 20 - 25 grid scan (avg) impedance [ ]* 50 / 80 self resonance frequency [mhz]** 71.5 inductance [ h]** 1.05 resistance [ ]** 2.7 q-factor** 33 matched q value*** 5-25 electrical specifcations the w7013 is a fexible near field communication (nfc) antenna ideal for tight-space embedded products such as tablets, laptops, printers and other unique system using nfc technology. it is intended for pairing and sharing modes typically found in non-payment nfc applications. the w7013 has a semi-fexible sintered ferrite backing designed to optimize magnetic felds, thus increasing the corresponding feld strength of the antenna. the w7013 is a thin, fexible antenna which can be fed with customer- supplied interconnect cables by using direct-solder meth - ods or with the use of pulses own interface connections. mounting the antenna is easily accomplished using the thin but aggressive holding adhesive backing. recommended for mounting on the inside of battery covers, directly onto pcb or metal surfaces, or locations where the antenna will be on or in close proximity to ground planes or displays. features - excellent performances on metal surfaces - thin, semi-fexible structure - easily assembles to device covers or mechanics - well-known antenna concept, reliable technology - rohs compliant product applications - mobile devices - reader / writer devices - sharing / pairing note : electrical characteristics depend on distance from metal objects and the location of the antenna on the device. measured in free space * with matching network ** bare coil without any matching network *** with matching network (adjustable). typical network picture refer to page 2. environmental specifcations operating temperature [c] -40 to +85 mechanical specifcations color black dimensions [in/mm] 1.18 x 0.98 x 0.01 (30 x 25 x 0.36) preliminary
2 pulseelectronics.com/products/antennas small planar nfc antenna with ferrite pulse part number w7013 preliminary L158.a (07/13) 2 pulseelectronics.com/products/antennas recommended matching network component value note lem c 560 nh filter resonance at 15.4 mhz cemc 180 pf filter resonance at 15.4 mhz c1 36 pf antenna matching component, value depends on the antenna environ - ment antenna matching c2 124 pf antenna matching component, value depends on the antenna environment antenna matching rq 0 ohm rq resistors used to lower q-value if above 35 input emc filter matching q-factor output to antenna preliminary
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