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sp e - 13 - 8 - 030/i / ss page 1 of 19 specification model no. : sg g p. 18 a product name : gps/glonass smt patch antenna features : single feed smt gps: 1575mhz glonass: 1602mhz dims: 18 * 18 * 4 mm patent pending rohs compliant photo :
sp e - 13 - 8 - 030/i / ss page 2 of 19 1. introduction this ceramic 1 8mm gp s/glonass patch antenna is mounted via smt process an d has been pre - tuned for a 50 * 5 0 mm ground plane. custom part numbers tuned for different ground - plane or layout positions and taking into account the specific conditions in your device can be created and supplied by taoglas. 2. specification original patch specification tested on 50 * 50 mm ground plane no parameter specification notes 1 range of receiving frequency gps: 1575.42 mhz 1.023 mhz glonass: 1602 5 mhz 2 return loss < - 10db center freq uency 3 gain at zenith gps: 3.88dbi glonass: 4.03 dbi 4 efficiency gps: 76.54% glonass: 78.59% 5 impedance 50 ohms 7 frequency temperature coefficient f 0 20ppm / o c - 40oc to +85oc 8 operating temperature - 40 ? c to + 85 ? c **changes in user groundplane and environment will offset centre frequency
sp e - 13 - 8 - 030/i / ss page 3 of 19 3. electrical specifications 3.1 return loss 3.2 efficiency 3.3
sp e - 13 - 8 - 030/i / ss page 4 of 19 average gain 3.4 peak gain
sp e - 13 - 8 - 030/i / ss page 5 of 19 4. radia tion patterns 4.1 xy plane y x z x y
sp e - 13 - 8 - 030/i / ss page 6 of 19 4.2 xz plane 4. 3 yz plane z x y z
sp e - 13 - 8 - 030/i / ss page 7 of 19 4.4 3d radiation pattern @ 1575.42mhz @ 1602mhz
sp e - 13 - 8 - 030/i / ss page 8 of 19 5. mechanical specifications 5.1 antenna dimensions and drawing
sp e - 13 - 8 - 030/i / ss page 9 of 19 5.2 top copper and copper keepout
sp e - 13 - 8 - 030/i / ss page 10 of 19 5.3 solder paste area
sp e - 13 - 8 - 030/i / ss page 11 of 19 5.4 solder mask (negative)
sp e - 13 - 8 - 030/i / ss page 12 of 19 5.5 footprint composite
sp e - 13 - 8 - 030/i / ss page 13 of 19 5.6 evaluation board 5.7 feed
sp e - 13 - 8 - 030/i / ss page 14 of 19 5 .8 test jig and dimension C sggp.18a
sp e - 13 - 8 - 030/i / ss page 15 of 19 5 .9 sggpd.18a
sp e - 13 - 8 - 030/i / ss page 16 of 19 6. antenna recommended soldering conditions 6.1 fl ux, solder ? use rosin - based flux. dont use highly acidic flux with halide content exceeding 0.2wt%(chlorine conversion value). ? use sn solder. 6.2 reflow soldering conditions ? pre - heating should be in such a way that the temperature difference betwe en solder and product s urface 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. unwrought pre - heating may cause cracks on the product, resulting in the deterioration of products qua lity. 6.3 reworking with soldering iron ? the following conditions must be strictly followed when using a soldering iron. pre - heating 150 , 1 min tip temperature 290 max soldering iron output 30w max soldering time 3 second max
sp e - 13 - 8 - 030/i / ss page 17 of 19 7. packaging 200 p cs/reel/inner carton
sp e - 13 - 8 - 030/i / ss page 18 of 19
sp e - 13 - 8 - 030/i / ss page 19 of 19 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 wit hout notice. taoglas reserves all rights to this document and the information contained herein. reproduction, use or disclosure to third parties without express permission is strictly prohibited. copyright ? taoglas ltd .

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