document number: 45157 for technical questions, contact: mlcc@vishay.com www.vishay.com revision: 15-jun-10 1 vj 6040 uhf chip antenna for mobile devices vj 6040 vishay vitramon the company?s products are covered by one or more of the following: wo2008250262 (a1), us2008303720 (a1), us2008305750 (a1), wo2008154173 (a1). other patents pending. description the vj 6040 multi-layer ceramic chip antenna is a small form-factor, high-performance, chip-antenna designed for tv reception in mobile devices in the uhf band. it allows mobile tv device manufacturers to design high quality products that do not bear t he penalty of a large external antenna. utilizing vishay's unique materials and manufacturing technologies, this product complies with the mbrai standard while maintaining a small outline. focusing on consumer applications, the antenna is designed to be assembled onto a pc board in the standard reflow process. target customers of the vj 6040 are mobile phone makers, portable multimedia device makers, notebook oems and odms, and accessory card oems and odms. the vj 6040 is the first of a family of products developed by vishay, a world leader in manufacturing of discrete and passive components. features ? small outline (10.5 mm x 15.5 mm x 1.2 mm) ? omni-directional, linear polarization ? complies with mbrai standard ? complete uhf band coverage (470 mhz to 860 mhz) up to 1.1 ghz ? requires a tuning circuit and ground plane for optimal performance ? standard smt assembly ?50 unbalanced interface ? operating temperature range (- 40 c to + 85 c) ? reference design and evaluation boards available upon request ? compliant to rohs directive 2002/95/ec applications ? mobile uhf tv receivers including dvb-t, dvb-h, isdb-t, cmmb, atsc, and mediaflo devices antenna performance peak gain the antenna radiation charac teristics are influenced by several factors including ground plane dimensions and impedance matching network. the antenna parameters presented hereafter were measured according to the configuration suggested by the vj 6040 evaluation board, utilizing its four channel active digital tuning circuit. the evaluation board ground plane is 40 mm by 80 mm large. figure 1 shows peak gain over frequency throughout the uhf band, compared with the mbrai requirements. fig. 1 - peak gain vs. frequency - 12 - 10 - 8 - 6 - 4 - 2 0 450 500 550 600 650 700 750 8 00 8 50 900 fre qu ency (mhz) standard meas u red sim u lated peak gain (dbi)
www.vishay.com for technical questions, contact: mlcc@vishay.com document number: 45157 2 revision: 15-jun-10 vj 6040 vishay vitramon vj 6040 uhf chip antenna for mobile devices figure 2 displays the measured and simulated r adiation efficiency of vj 6040 over frequency. fig. 2 - radiation e fficiency vs. frequency applications that do not require full coverage of the uhf band can gain an additional two to three dbi by removing the tuning circuit. in this case the antenna can be fixed to any 150 mhz band within the uhf range. radiation pattern the 3d planes of vj 6040 are defined in figure 3. fig. 3 - vj 6040 3d plane definition 0 5 10 15 20 25 30 35 fre qu ency (mhz) efficiency (%) 460 510 560 610 660 710 760 8 10 8 60 40 meas u red v al u e sim u lated v al u e z x y
document number: 45157 for technical questions, contact: mlcc@vishay.com www.vishay.com revision: 15-jun-10 3 vj 6040 vj 6040 uhf chip anten na for mobile devices vishay vitramon figure 4. displays the simulated 3d radiation pattern at 650 mhz. fig. 4 - simulated radiation pattern figure 5. displays the measured radiation patterns of vj 6040 ev aluation board in the yz plane as defined in figure 3. zero degrees is defined at the z ax is, stepping counter clockwise. fig. 5 - measured radiation pattern 500 mhz - gain (dbi) v s. angle () - 50 - 45 - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 6 12 1 8 24 30 36 42 4 8 54 60 66 72 7 8 8 4 90 96 102 10 8 114 120 126 132 13 8 144 150 156 162 16 8 174 1 8 0 1 8 6 192 19 8 204 210 216 222 22 8 234 240 246 252 25 8 264 270 276 2 8 2 2 88 294 300 306 312 31 8 324 330 336 342 34 8 354 600 mhz - gain (dbi) v s. angle () - 50 - 45 - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 6 12 1 8 24 30 36 42 4 8 54 60 66 72 7 8 8 4 90 96 102 10 8 114 120 126 132 13 8 144 150 156 162 16 8 174 1 8 0 1 8 6 192 19 8 204 210 216 222 22 8 234 240 246 252 25 8 264 270 276 2 8 2 2 88 294 300 306 312 31 8 324 330 336 342 34 8 354 700 mhz - gain (dbi) v s. angle () - 50 - 45 - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 6 12 1 8 24 30 36 42 4 8 54 60 66 72 7 8 8 4 90 96 102 10 8 114 120 126 132 13 8 144 150 156 162 16 8 174 1 8 0 1 8 6 192 19 8 204 210 216 222 22 8 234 240 246 252 25 8 264 270 276 2 8 2 2 88 294 300 306 312 31 8 324 330 336 342 34 8 354 8 00 mhz - gain (dbi) v s. angle () - 50 - 45 - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 0 6 12 1 8 24 30 36 42 4 8 54 60 66 72 7 8 8 4 90 96 102 10 8 114 120 126 132 13 8 144 150 156 162 16 8 174 1 8 0 1 8 6 192 19 8 204 210 216 222 22 8 234 240 246 252 25 8 264 270 276 2 8 2 2 88 294 300 306 312 31 8 324 330 336 342 34 8 354 g
www.vishay.com for technical questions, contact: mlcc@vishay.com document number: 45157 4 revision: 15-jun-10 vj 6040 vishay vitramon vj 6040 uhf chip antenna for mobile devices footprint and mechanical dimensions the antenna footprint and mechanical dimensio ns are presented in figure 6. for mechanical support, it is recommended to add one or two drops of heat curing epoxy glue. the glue dot shoul d not overlap with any of the soldering pads. it is recommended to apply the glue dot at the center of the antenna, as shown by the diagonal pattern. for more details see ?vj 6040 assembly guidelines? section below. fig. 6 - vj 6040 footprint vj 6040 assembly guidelines 1. mounting of antennas on a printed circuit board should be done by reflow soldering. the reflow soldering profiles are shown below. 2. in order to provide the adequate strength between the antenna and the pcb the application of a dot of heat cured epoxy glue in the center of the footprint of the antenna prior to the antenn a's soldering to the board should be done. an example for suc h glue could be heraeus pd 860002 sa. the weight of the dot should be 5 mg to 10 mg. fig. 7 - soldering ir reflow with snpb solder 0.35 1.0 0.35 0.35 0.35 ` 0.35 1.0 1.0 1.0 rf feed connects here 4.65 4.6 1.0 0.35 all dimensions in mm fig u re not in scale 4.65 0.5 3.6 3.6 0.5 0.5 glue dot area time 30 s to 60 s 30 s to 60 s 30 s to 60 s 0 50 100 150 200 250 300 t (c) > 215 c: 20 s to 40 s max. temperat u re min. temperat u re sn-p b e u tectic solder paste
document number: 45157 for technical questions, contact: mlcc@vishay.com www.vishay.com revision: 15-jun-10 5 vj 6040 vj 6040 uhf chip anten na for mobile devices vishay vitramon fig. 8 - soldering reflow with sn solder fig. 9 - soldering ir reflow with snagcu solder t (s) 0 50 100 150 200 250 300 t (c) 260 c 50 100 150 200 250 245 c 215 c 1 8 0 c 130 c 40 s 10 s 10 s 2 k/s ? ? 0 50 100 150 200 250 300 t (c) time 60 s to 120 s 30 s to 60 s max. temperat u re min. temperat u re sn-ag-c u solder paste 60 s to 120 s 60 s to 120 s ordering information vishay material packaging quantity vj 6040 vj6040m011sxisra0 1000 pieces
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.
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