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| spe - 11 - 8 - 140/ c / s s page 1 of 11 specification model no. : sgp. 25 d part no. : sgp.1575.2 5 .4.d . 02 product name : gps smt patch antenna features 25 m m* 25 mm* 4 mm 1575mhz centre frequency patent pending rohs ? halogen free compliant photo :
spe - 11 - 8 - 140/ c / s s page 2 of 11 1. introducti on this ceramic gps patch antenna is based on smart xtremegain ? technolog y. it is mounted via smt process an d has been tuned as the optimal solution for the ublox c16 - g25q gsm/gps integrated reference design. the c16 - g25q gsm/gps reference design is a complete and integrated solution for telematics applications such as fleet management, asset tracking, road pricing, and security/surveillance. it demonstrates the integration of u - blox neo - 5q gps receiver with a leon - g200 gprs/gsm module. this 100% smd solution uses smt passive gps (taoglas sgp.25d) and gsm antenna (t aoglas pa.25a) and an on - board sim chip with activated phone number (sim holder optional for mechanical (sim). on the test fixture of 63.2 x 50.03 mm ( gnd plane ) the antenna has a centre frequency of 1567mhz 3mhz 2. specification no parameter specif ication 1 range of receiving frequency 1575mhz +/ - 1.023mhz 2 bandwidth 2 2 mhz min with return loss < - 10db 3 vswr 1.5 max 4 gain at zenith +1. 0 dbic typ. 5 axial ratio 4 .0 db max. 6 impedance 50 7 polarization right hand circular polarization 8 frequency temperature coefficient 0 20 ppm/ oc max @ - 40oc to +8 5oc 9 operating temperature - 40oc to +85 oc spe - 11 - 8 - 140/ c / s s page 3 of 11 3. electrical specifications 3.1 return loss, swr, impedance (for ublox c16 - g25q reference design) spe - 11 - 8 - 140/ c / s s page 4 of 11 3.2 matching circuit spe - 11 - 8 - 140/ c / s s page 5 of 11 3.3 axial ratio test mode freq (mhz) max gain (dbi) min gain (dbi) avg gain (dbi) source polar. axial ratio 1575.42 - 1.67 / 359.10 - 40.80 / 263.03 - 6.46 cp spe - 11 - 8 - 140/ c / s s page 6 of 11 3.4 cut plane patterns x C z plane test mode freq (mhz) max gain (dbi) min gain (dbi) avg gain (dbi) source polar. xz 1575.42 - 1.92 / 358 - 25.43 / 228 - 2.49 rhcp spe - 11 - 8 - 140/ c / s s page 7 of 11 y C z plane test mode freq (mhz) max gain (dbi) min gain (dbi) avg gain (dbi) source polar. yz 1575.42 - 1.71 / 355 - 13.07 / 225 - 2.53 rhcp spe - 11 - 8 - 140/ c / s s page 8 of 11 4. mechanical specifi cations 4.1 dimensions and drawing spe - 11 - 8 - 140/ c / s s page 9 of 11 4.2 test fixture and measurements xxxx xxxx spe - 11 - 8 - 140/ c / s s page 10 of 11 5. antenna recommended soldering conditions 5. 1 flux, solder ? use rosin - based flux. dont use highly acidic flux with halide content exceeding 0.2wt%(chlorine conversion value). ? use sn solder. 5.2 reflow soldering conditions ? pre - heating should be in such a way that the temperature difference between solder and product surface is limited to 150 max. cooling into solvent after soldering also should be in such a way that temperature difference is limited to 100 max. unwro ught pre - heating may cause cracks on the product, resulting in the deterioration of products quality. 5. 3 reworking with soldering iron ? the following conditions must be strictly followed when using a soldering iron. pre - heating 150 ? , 1 min tip temp erature 290 ? max soldering iron output 30w max soldering time 3 second max spe - 11 - 8 - 140/ c / s s page 11 of 11 6. packaging 200 pieces/reel/inner carton, 4 reels in outer carton - (800) |
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