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spe - 1 3 - 8 - 007/g /ss page 1 of 18 specification part no. : swl p.2450.12. 4. b .02 product name : 1 2 *1 2 * 4 mm 2.4ghz smd patch antenna features : 2.4 - 2.5 ghz patch antenna for wi - fi /wlan/ism/zigbee industrial applications high gain 2dbi linearly polarized rohs compliant top bottom
spe - 1 3 - 8 - 007/g /ss page 2 of 18 1. introduction this 1 2 *1 2 * 4 mm high gain 2.4ghz patch antenna is ideally suited for high performance industrial applications in the 2.4 ghz wi - f i, ism, and zigbee bands. this product has highe st gain in the xz (azimuth) plane direction, most suitable for fixed wireless applications where transmission and reception is focused to one hemisphere of the device, for example a wireless meter on a reinforced concrete wall. it can also be placed anywhere on t he device ground - plane, unlike most chip or loop antennas which need to be edge mounted. many module manufacturers specify peak gain limits for any antennas that are to be connected to that module. those peak gain limits are based on free - space conditions . in practice, the peak gain of an antenna tested in free - space can degrade by at least 1 or 2dbi when put inside a device. so ideally you should go for a slightly higher peak gain antenna than mentioned on the module specification to compensate for this e ffect, giving you better performance. upon testing of any of our antennas with your device and a selection of appropriate layout, integration technique, or cable, taoglas can make sure any of our antennas peak gain will be below the peak gain limits. tao glas can then issue a specification and/or report for the selected antenna in your device that will clearly show it complying with the peak gain limits, so you can be assured you are meeting regulatory requirements for that module. for example, a module m anufacturer may state that the antenna must have less than 2dbi peak gain, but you dont need to select an embedded antenna that has a peak gain of less than 2dbi in free - space. this will give you a less optimized solution. it is better to go for a slightl y higher free - space peak gain of 3dbi or more if available. once that antenna gets integrated into your device, performance will degrade below this 2dbi peak gain due to the effects of gnd plane, surrounding components, and device housing. if you want to b e absolutely sure, contact taoglas and we will test. choosing a taoglas antenna with a higher peak gain than what is specified by the module manufacturer and enlisting our help will ensure you are getting the best performance possible without exceeding the peak gain limits.
spe - 1 3 - 8 - 007/g /ss page 3 of 18 it is better not to select an embedded antenna with very low free - space peak gain (<2dbi) directly, as this antenna would have worse performance in your device, and lead to compromised performance compared to using a taoglas antenna. 2. key antenna performance indicators * electrical frequency range 2400 mhz to 2500 mhz bandwidth 100 mhz @ - 7db efficiency 80.12% @ 2450 mhz polarization linear vswr 3.0 max @ center frequency peak gain +2 dbi typ. impedance 50 ohms mechanical dimensions 12mm x 12mm x 4mm weight 4g environmental operating temperature - 40 to +85 storage temperature - 40 to +85 termination ag (environmentally friendly pb free) original patch specification measured on evb 50*50mm . a ctual value depend s on ground - plane and housing
spe - 1 3 - 8 - 007/g /ss page 4 of 18 3. electrical specifications 3.1 return loss
spe - 1 3 - 8 - 007/g /ss page 5 of 18 3 .2 definition of x - y - z plane y x z
spe - 1 3 - 8 - 007/g /ss page 6 of 18 3 .3 radiation patterns xy plane xz plane -40 -30 -20 -10 0 10 0 30 60 90 120 150 180 210 240 270 300 330 (db) 2400mhz 2450mhz 2500mhz -40 -30 -20 -10 0 10 0 30 60 90 120 150 180 210 240 270 300 330 (db) 2400mhz 2450mhz 2500mhz x y x z
spe - 1 3 - 8 - 007/g /ss page 7 of 18 yz plane -40 -30 -20 -10 0 10 0 30 60 90 120 150 180 210 240 270 300 330 (db) 2400mhz 2450mhz 2500mhz y z
spe - 1 3 - 8 - 007/g /ss page 8 of 18 3.4 efficiency 3.5 average gain
spe - 1 3 - 8 - 007/g /ss page 9 of 18 3.6 peak gain 3.7 3d radiation pattern 2400mhz
spe - 1 3 - 8 - 007/g /ss page 10 of 18 2450mhz 2500mhz
spe - 1 3 - 8 - 007/g /ss page 11 of 18 4 . dimensions
spe - 1 3 - 8 - 007/g /ss page 12 of 18 4.1 evaluation board dimensions
spe - 1 3 - 8 - 007/g /ss page 13 of 18 5 . footprint 5.1 top copper 5 .2 top solder paste
spe - 1 3 - 8 - 007/g /ss page 14 of 18 5.3 top solder mask 5.4 composite diagram
spe - 1 3 - 8 - 007/g /ss page 15 of 18 6. packaging
spe - 1 3 - 8 - 007/g /ss page 16 of 18
spe - 1 3 - 8 - 007/g /ss page 17 of 18 7 . recommended reflow temperature profile swlp.12b can be assembled following pb - free assembly. according to the standard ipc/jedec j - std - 020c, the temperature profile suggested is as follow: phase profile features pb - free assembly (snagcu) preheat temperature min(tsmin) temperature max(tsmax) time(ts) from (tsmin to tsmax) 150c 200c 60 - 120 seconds ramp - up avg. ramp - up rate (tsmax to tp) 3c/second(max) reflow temperature(tl) total time above tl (tl) 217c 30 - 100 seconds peak temperature(tp) time(tp) 260c 2 - 5 seconds ramp - down rate 3c/second(max) time from 25c to peak temperature 8 minutes max. composition of solder paste 96.5sn/3ag/0.5cu solder paste model shenmao pf606 - p26 s oldering iron condition: soldering iron temperature 270c10c. apply preheating at 120c for 2 - 3 minutes. finish soldering for each terminal within 3 seconds, if soldering iron temperature over270c10c or 3 seconds, it will make cause component surface peeling or damage.
spe - 1 3 - 8 - 007/g /ss page 18 of 18 taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. taoglas reserves all rights to thi s document and the information contained herein. reproduction, use or disclosure to third parties without express perm ission is strictly prohibited. copyright ? taoglas ltd.

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