Application Guide Printed Circuit Board RFID Devices LXMS Series www.murataamericas.com/rfid Application Guide Murata’s MAGICSTRAP® is the latest in UHF RFID chip development, designed to be placed on the printed circuit board (PCB). The integrated module eliminates many of the frustrations previously encountered by design engineers looking to incorporate RFID into their project. By following some basic and simple guidelines, the antenna is designed into the PCB’s ground plane. This represents a permanent and cost effective antenna solution. Once mounted, information can be stored and retrieved on MAGICSTRAP® using any EPCglobal Gen2 / ISO 18000-6C compatible UHF Reader/ Writer. Features zz Compact Size (3.2 x 1.6 x 0.7mm) zz 4 to 5 meter read range is possible zz Operating Frequency – 860-960MHz zz Utilizes ground as PCB ground as antenna zz 512 bits user memory zz Reference antenna designs available zz EPC Global Gen2 / ISO 18000-6C compatible zz ESD protection up to >2kV zz Secure with long data retention zz Fully RoHS compliant MAGICSTRAP® Use Cases PCB Traceability Warranty Tracking Inventory Control Product Authenticity Firmware Revision Tracking Applications zz IT – PC, Server, Modem, Mobile phone zz Home appliances – stove, refrigerator zz Consumer – STB, DTV, DVD, audio zz EMS – value added services zz Automotive – instrument panel, audio... zz Specialty applications – durable tags zz Industry – smart meters, inverters zz Gaming – portable, stationary 1 Application Guide Product Lineup Part Number Type * LXMS31ACNA-009 LXMS31ACNA-010 LXMS31ACNA-011 LXMS31ACNA-012 LXMS31ACMD-140 LXMS31ACMD-141 LXMS31ACMD-142 LXMS31ACMD-143 LXMS31ACMD-144 1 2 3 4 0 1 2 3 4 IC NXP G2XM EPC User Memory TID up to 240bits 512bits 64bits Op Temp -40°C to +85°C Impinj Monza4QT up to 128bits 512bits 64bits * Type refers to the impedance value and recommended antenna reference design Part Number Breakdown LXMS 31 A C AC -009 Product Series Serial No. IC: NA = NXP G2XM MD = Monza4QT Size: 3.2 x 2.5mm Electrode Code: A = External Carrier: C = T&R Dimensions (mm) Mark L W T a 2 Dimensions 3.2 ± 0.2 1.6 ± 0.2 0.7 max. 1.25 ± 0.1 Mark b1 b2 d - Dimensions 0.18 ± 0.18 0.18 ± 0.18 0.7 ± 0.1 - Application Guide MAGICSTRAP® Block Diagram Integrated Circuit Matching Circuit Analog Front End Controller Memory Recommended Land Pattern Design Recommended land pattern (SMT process) Recommended land pattern (adhesive attachment) 3 Application Guide Electrical Parameters zz Frequency Range: 865 – 955MHz zz Minimum operating power: -8dBm zz Electrical characteristics at minimum operating power (Ta=25C, unit: Ω) MAGICSTRAP® LXMS31ACNA-009 LXMS31ACNA-010 LXMS31ACNA-011 LXMS31ACNA-012 LXMS31ACMD-140 P/N LXMS31ACMD-141 LXMS31ACMD-142 LXMS31ACMD-143 LXMS31ACMD-144 Parameter @866.6MHz Impedance Value @915.0MHz @953.0MHz R 50 15 12 25 80 X 0 -45 -107 -200 -405 R 50 25 12 25 80 X 0 -45 -107 -200 -420 R 50 30 9 20 60 X 0 -48 -105 -195 -425 Read Range 4W EIRP @ 915MHz Note: distances measured with 4W EIRP reader, 6dBi circularly polarized antenna, at 915 MHz; MAGICSTRAP® using NXP G2XL/M. 4 Application Guide Reference Antenna Design and Performance Type 1 Directivity Actual Read Range PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm USA (m) 0.5 1.0 0.7 0.1 Japan (m) 0.4 0.8 0.5 0.1 PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm 30dBm, 6dB1 (4W EIRP) w/circularly polarized wave *Reader/Writer: CSL-461 ** 2mm read range is available with loop antenna USA (cm) 3.0 10.0 ** ** 10dBm, 6dB1 (40mW EIRP) w/linearly polarized wave Read Range (m) by Freq (MHz) Simulation according to min. operating power 5 Japan (cm) 1.0 0.8 ** ** Application Guide Reference Antenna Design and Performance Type 2 Directivity Actual Read Range PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm USA (m) 1.4 2.5 1.6 0.6 Japan (m) 1.1 2.0 1.6 0.5 PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm 30dBm, 6dB1 (4W EIRP) w/circularly polarized wave *Reader/Writer: CSL-461 ** 2mm read range is available with loop antenna USA (cm) 5 20 5 ** 10dBm, 6dB1 (40mW EIRP) w/linearly polarized wave Read Range (m) by Freq (MHz) Simulation according to min. operating power 6 Japan (cm) 3 10 10 ** Application Guide Reference Antenna Design and Performance Type 3 Directivity Actual Read Range PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm USA (m) 3.2 5.0 3.6 1.4 Japan (m) 2.6 4.3 3.6 1.4 PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm 30dBm, 6dB1 (4W EIRP) w/circularly polarized wave *Reader/Writer: CSL-461 ** 2mm read range is available with loop antenna USA (cm) 40 60 40 15 10dBm, 6dB1 (40mW EIRP) w/linearly polarized wave Read Range (m) by Freq (MHz) Simulation according to min. operating power 7 Japan (cm) 30 45 30 15 Application Guide Reference Antenna Design and Performance Type 4 Directivity Actual Read Range PCB Size LxW 20 x6 cm 14 x 4cm 10 x 4cm 6 x 4cm USA (m) 5.0 5.0 5.0 4.6 Japan (m) 3.0 3.0 3.0 3.5 PCB Size LxW 20 x 6cm 14 x 4cm 10 x 4cm 6 x 4cm 30dBm, 6dB1 (4W EIRP) w/circularly polarized wave *Reader/Writer: CSL-461 ** 2mm read range is available with loop antenna USA (cm) 40 45 50 50 10dBm, 6dB1 (40mW EIRP) w/linearly polarized wave Read Range (m) by Freq (MHz) Simulation according to min. operating power 8 Japan (cm) 20 30 30 40 Application Guide PCB Design Rules to Maximize Read Range 1 – Position of MAGICSTRAP® on PCB: MAGICSTRAP® should be centered on the long side of the PCB to maximize read range. The following illustrates the relationship between “X” length and read range using Type-3 board design. Length “X” (cm) 5 2 1 Read Range (m) 3.6 2.5 1.6 2 – Eliminate conductive material under MAGICSTRAP®: All layers beneath MAGICSTRAP® should be free of conductive material. This area should be equal or larger then the top layer antenna design to maximize read range. The example below is using Type 3 design. Top PCB Layer (antenna interface) Other Layers Acceptable board designs Unacceptable board designs 9 Application Guide PCB Design Rules to Maximize Read Range 3 – Metal enclosure under printed circuit board: When the PCB is in close proximity to the metal enclosure, sensitivity is reduced. Removing material directly under the MAGICSTRAP® antenna pattern will greatly improve sensitivity. 4 – Antenna location on PCB Location of the PCB antenna should be located closest to the edge of the PCB, as shown below in dark green. Variations of ideal design are also acceptable. Ideal antenna location Variations of antenna design Indentation Multi layer antenna using via hole via copper on another layer 10 Application Guide Prototyping using MAGICSTRAP® Select board location for MAGICSTRAP® and remove resist material Select one of Murata’s Mini-PCB prototype boards based on desired read range and available board space Solder the Mini-PCB prototype board, verify functionality and performance using reader / writer no Good enough? ok Incorporate reference design and produce PCB 11 Head Office 1-10-1, Higashi Kotari 1-chome Nagaokakyo-shi, Kyoto 617-8555, Japan Phone: 81-75-951-9111 International Division 3-29-12, Shibuya 3-chome, Shibuya-ku, Tokyo 150-0002 Japan Phone: 81-3-5469-6123 Murata Americas Murata Electronics N.A., Inc. (Regional HQ) 2200 Lake Park Drive Smyrna, GA 30080-7604, USA. Phone: 1-770-436-1300 Fax: 1-770-436-3030 For additional information visit: www.murataamericas.com/rfid Murata (China) Investment Co., Ltd. Murata Europe Taiwan Murata Electronics Co., Ltd. Murata Electronics Singapore (Pte.) Ltd. Lane 318 Yonghe Road Zhabei District, Shanghai 200072, China Phone: 86-21-3205-4616 Fax: 86-21-3205-4617 No 225 Chung - Chin Road, Taichung, Taiwan Phone: 886-4-2425-4151 © April 2, 2012 Murata Americas Murata Electronics Europe B.V. (Regional HQ) Daalmeerstraat 4, 2131HC Hoofddorp The Netherlands Phone: +31-(0)23-5698360 Fax: +31-(0)23-5698361 200 Yishun Avenue 7 Singapore, 768927 Tel: 65-6758-4233 Fax: 65-6758-2026 www.murataamericas.com/rfid