VJ5301M915MXBSR www.vishay.com Vishay Vitramon Surface Mount Ceramic Chip Antennas for 915 MHz FEATURES • Small outline (35 mm x 5 mm x 1.2 mm) • 50 unbalanced tuning interface (max. 4.73 dBi gain (1)) • Assembled onto a PCB in the standard reflow process • 160 MHz half-power tuned bandwidth (835 to 995 MHz) • High-reliability ceramic-oxide body construction • Low-RF loss, high-Q ceramic • Lead (Pb)-free/wet build process VJ5301M915MXBSR chip antenna product • Reliable Noble Metal Electrode (NME) system Vishay VJ5301M915MXBSR chip antennas are covered by one or more of the following patents: WO2008250262 (A1), US2008303720 (A1), US2008305750 (A1), WO2008154173 (A1) Other patents are pending. DESCRIPTION • Wide operating temperature range (- 40 °C to + 85 °C) • Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 Note (1) See figures 1 through 6 for more details on the radiation pattern (antenna gain) at 915 MHz; the PCB board ground is shorted to earth ground for tuning. The VJ5301M915MXBSR ceramic chip antenna is a small form-factor, high-performance, chip-antenna designed for operation at 915 MHz. It allows manufacturers to design high quality products that do not bear the penalty of a large external antenna, and is designed to be assembled onto a PC board using a standard reflow process. APPLICATIONS The VJ5301M915 is the latest in a family of products developed by Vishay, a world leader in manufacturing of discrete and passive components. • Long range RFID The VJ5301M915 series are small form-factor, high-performance chip-antennas optimized for medical, remote sensing, industrial, security, and RFID applications. Operating temperature: - 40 °C to + 85 °C Utilizing unique Vishay materials and manufacturing technologies, these products when properly tuned also comply with the MBRAI standard for portable communication. • Medical telemetry (internal/external) • Remote sensing and control • Industrial automation and telemetry • Security systems, home automation ELECTRICAL SPECIFICATIONS Frequency range (transmission/reception): 835 MHz to 995 MHz Note • Electrical characteristics at + 25 °C unless otherwise specified. Antenna performance is measured at 915 MHz and 50 impedance unless otherwise specified. The best results are obtained by mounting the chip following the layout guidelines application note for the evaluation kit. QUICK REFERENCE DATA SERIES VJ5301M915MXBSR FREQUENCY (MHz) MAX. GAIN (dBi) AVERAGE GAIN (dBi) BANDWIDTH (- 10 dB) (MHz) BANDWIDTH (- 3 dB) (MHz) 915 4.73 1.73 47 160 CHIP ANTENNA PERFORMANCE - 10 dB - 3 dB 915 915 MHz REFLECTED 868 MHz - 3 dB - 10 dB BANDWIDTH BANDWIDTH NOMINAL NOMINAL MHz POWER REFLECTED AVERAGE REFLECTED 886 MHz to REFLECTED 835 MHz to FREQUENCY IMPEDANCE PEAK COEFFICIENT POWER POWER GAIN POWER 935 MHz 995 MHz GAIN (MHz) () S11 LOSS LOSS (dBi) LOSS (dBi) (MHz) (MHz) 915 50 Revision: 28-Mar-12 1.73 4.73 < - 20 dB 1% 1% < 0.05 dB 160 50 % 3 dB 49 10 % 0.46 dB Document Number: 45207 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VJ5301M915MXBSR www.vishay.com Vishay Vitramon VJ5301M915MXBSR TUNING Final tuning configuration and component values for L1, L2, and C1 depend on customer PCB layout. Optimal tuning is possible with just a few standard components. The nominal values shown are for a tuned VJ5301M915MXBEK kit. 105° 5 120° -5 135° 150° 90° 75° 60° 45° 30° -15 165° -25 15° 180° -35 dBi 0° -165° Pole rotaon ϕ° -15° -150° -30° -135° -120° -105° -45° -60° -75° -90° Rotaon plane / Horizontal E-field polarizaon XY / ϕ Fig. 4 - VJ5301M915MXBSR XY Radiation Pattern 105° 2 120° -8 135° Fig. 1 - Tuning Example with Inductors L1, L2 and Capacitor C1 150° Power Reflection S11 (dB) Versus Frequency (MHz) Power Reflection S11 dB (50 Ω) 0 835 875 915 955 995 MHz VJ5301M915 -5 75° 45° 30° -18 -28 15° 180° -38 dBi 0° -165° Pole rotaon ϕ° -15° -150° -30° -135° -120° -105° -15 99 % power coupled at 915 MHz for -20 105° 5 120° -5 135° Fig. 2 - VJ5301M915 Tuned to 915 MHz with 99 % Power Coupled 150° The radiaon paerns reference the elevaon θ that is perpendicular to the azimuth pole rotaon in ϕ. Fig. 3 - VJ5301M915 PCB Mounting and Coordinate Directions YZ / ϕ Fig. 5 - VJ5301M915MXBSR YZ Radiation Pattern Frequency (MHz) φ = 0° Receiver Direction Y-axis Z-axis Z-axis -45° -60° -75° -90° Rotaon plane / Horizontal E-field polarizaon dB Rotation Plane XY YZ XZ 60° 165° -10 -25 90° 90° 75° 60° 45° 30° -15 165° -25 15° 180° -35 dBi Pole rotaon ϕ° 0° -165° -150° -135° -120° -105° -15° -30° -45° -60° -75° -90° Rotaon plane / Vercal E-field polarizaon XZ / θ Fig. 6 - VJ5301M915MXBSR XZ Radiation Pattern Revision: 28-Mar-12 Document Number: 45207 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VJ5301M915MXBSR www.vishay.com Vishay Vitramon FOOTPRINT, MECHANICAL AND PCB DIMENSIONS The antenna footprint and mechanical dimensions are presented in Figure 7. Optimal tuning is adjusted according to PCB layout. For additional mechanical support, it is recommended to add one drop of heat curing epoxy glue. • The glue dot should not overlap with any of the soldering pads • Apply the glue dot at the center of the antenna. • The glue dot area secures the chip firmly to the PCB Fig. 7 - Footprint, Chip Antenna Mechanical Dimensions, and PCB Layout Dimensions of VJ5301M915 300 T (°C) Max. temperature 250 300 T (°C) 250 10 s 260 °C ˜ 245 °C > 215 °C: 20 s to 40 s 215 °C 200 200 180 °C 150 150 Sn-Pb eutectic solder paste 40 s 130 °C Min. temperature 100 10 s 100 2 K/s 50 50 0 30 s to 60 s 30 s to 60 s 30 s to 60 s Fig. 8 - Soldering IR Reflow with SnPb Solder Revision: 28-Mar-12 Time 0 50 100 150 200 t (s) 250 Fig. 9 - Soldering Reflow with Sn Solder Document Number: 45207 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 VJ5301M915MXBSR www.vishay.com Vishay Vitramon VJ5301M915 ASSEMBLY GUIDELINES 1. Mounting of antennas on a printed circuit board should be done by reflow soldering using the profiles shown (Figures 8, 9, and 10) 2. In order to provide the adequate strength between the antenna and the PCB apply of a dot of heat cured epoxy glue in the center of the footprint of the antenna prior to soldering the antenna to the board. An example for such glue is Heraeus PD 860002 SA. The weight of the dot should be 5 mg to 10 mg. 300 T (°C) 250 200 Max. temperature Sn-Ag-Cu solder paste 150 Min. temperature 100 50 0 30 s to 60 s 60 s to 120 s 60 s to 120 s Time 60 s to 120 s Fig. 10 - Soldering IR Reflow with SnAgCu Solder ORDERING INFORMATION VISHAY MATERIAL PACKAGING QUANTITY VJ5301M915 Chip Antenna VJ5301M915MXBSR 1000 pieces VJ5301M915 Evaluation Kit (1) VJ5301M915MXBEK 1 kit Note (1) The VJ5301M915 kit is available for evaluation. For samples, please contact [email protected]. Revision: 28-Mar-12 Document Number: 45207 4 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000