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www.vishay.com Vishay Vitramon End of Life – Last Available Purchase Date: 20-Aug-2017 Revision: 07-Mar-17 1 Document Number: 45207 For technical questions, contact: chipantenna@vishay.com 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 Surface Mount Ceramic Chip Antennas for 915 MHz VJ5301M915MXBSR chip antenna product 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
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. The VJ5301M915 is the latest in a family of products developed by Vishay, a world leade r in manufacturing of discrete and passive components. The VJ5301M915 series are small form-factor, high-performance chip-antennas optimized for medical, remote sensing, industrial, security, and RFID applications. Utilizing unique Vishay materials and manufacturing technologies, these products when properly tuned also comply with the MBRAI standard for portable communication.
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
- Reliable Noble Metal Electrode (NME) system
- 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.
APPLICATIONS
- Medical telemetry (internal/external)
- Remote sensing and control
- Industrial automation and telemetry
- Security systems, home automation
- Long range RFID ELECTRICAL SPECIFICATIONS Operating temperature: -40 °C to +85 °C Frequency range (transmission/reception):
835 MHz to 995 MHz
- 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 FREQUENCY (MHz) MAX. GAIN (dBi) AVERAGE GAIN (dBi) BANDWIDTH (-10 dB) (MHz) BANDWIDTH (-3 dB) (MHz) VJ5301M915MXBSR 915 4.73 1.73 47 160 CHIP ANTENNA PERFORMANCE NOMINAL FREQUENCY (MHz) NOMINAL IMPEDANCE (:)
915 MHz
(dBi) 915 MHz PEAK GAIN (dBi) REFLECTED POWER COEFFICIENT S11
868 MHz
-3 dB BANDWIDTH
835 MHz to
995 MHz
(MHz) -3 dB REFLECTED POWER LOSS -10 dB BANDWIDTH
886 MHz to
935 MHz
(MHz) -10 dB REFLECTED POWER LOSS 915 50 1.73 4.73 < -20 dB 1 % 160 50 % 49 10 % 1 % < 0.05 dB 3 dB 0.46 dB
www.vishay.com Vishay Vitramon End of Life – Last Available Purchase Date: 20-Aug-2017 Revision: 07-Mar-17 2 Document Number: 45207 For technical questions, contact: chipantenna@vishay.com 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 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. Fig. 1 - Tuning Example with Inductors L1, L2 and Capacitor C1 Fig. 2 - VJ5301M915 Tuned to 915 MHz with 99 % Power Coupled Fig. 3 - VJ5301M915 PCB Mounting and Coordinate Directions Fig. 4 - VJ5301M915MXBSR XY Radiation Pattern Fig. 5 - VJ5301M915MXBSR YZ Radiation Pattern Fig. 6 - VJ5301M915MXBSR XZ Radiation Pattern -25 -20 -15 -10 835 875 915 955 995 Power Reflection S11 dB (50 Ω) Frequency (MHz) VJ5301M915 dB Power Reflection S11 (dB) Versus Frequency (MHz) 99 % power coupled at
915 MHz for
φ = 0° Receiver Direction XY Y-axis YZ Z-axis XZ Z-axis The radia/g415on pa/g425erns reference the eleva/g415on θ that is perpendicular to the azimuth pole rota/g415on in ϕ. -35 -25 -15 90° 75° 60° 45° 30° 15° -15° -30° -45° -60° -75° -90° -105° -120° -135° -150° -165° 180° 165° 150° 135° 120° 105° XY / ϕ dBi Rota/g415on plane / Horizontal E-field polariza/g415on Pole rota/g415on ϕ° -38 -28 -18 90° 75° 60° 45° 30° 15° -15° -30° -45° -60° -75° -90° -105° -120° -135° -150° -165° 180° 165° 150° 135° 120° 105° YZ / ϕ dBi Rota/g415on plane / Horizontal E-field polariza/g415on Pole rota/g415on ϕ° -35 -25 -15 90° 75° 60° 45° 30° 15° -15° -30° -45° -60° -75° -90° -105° -120° -135° -150° -165° 180° 165° 150° 135° 120° 105° XZ / θ dBi Rota/g415on plane / Ver/g415cal E-field polariza/g415on Pole rota/g415on ϕ°
www.vishay.com Vishay Vitramon End of Life – Last Available Purchase Date: 20-Aug-2017 Revision: 07-Mar-17 3 Document Number: 45207 For technical questions, contact: chipantenna@vishay.com 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 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 Fig. 8 - Soldering IR Reflow with SnPb Solder Fig. 9 - Soldering Reflow with Sn Solder Time30 s to 60 s30 s to 60 s30 s to 60 s 100 150 200 250 300 T (°C) > 215 °C: 20 s to 40 s Max. temperature Min. temperature Sn-Pb eutectic solder paste t (s) 100 150 200 250 300 T (°C) 260 °C 50 100 150 200 250 245 °C 215 °C 180 °C 130 °C 40 s 10 s 10 s
2 K/s
www.vishay.com Vishay Vitramon End of Life – Last Available Purchase Date: 20-Aug-2017 Revision: 07-Mar-17 4 Document Number: 45207 For technical questions, contact: chipantenna@vishay.com 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 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. Fig. 10 - Soldering IR Reflow with SnAgCu Solder Note (1) The VJ5301M915 kit is available for evaluation. For samples, please contact mlcc-samples@vishay.com. 100 150 200 250 300 T (°C) Time 60 s to 120 s 30 s to 60 s Max. temperature Min. temperature Sn-Ag-Cu solder paste 60 s to 120 s 60 s to 120 s ORDERING INFORMATION VISHAY MATERI AL PACKAGING QUANTITY VJ5301M915 Chip Antenna VJ5301M915MXBSR 1000 pieces VJ5301M915 Evaluation Kit (1) VJ5301M915MXBEK 1 kit
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