s pe - 13 - 8 - 031/ e /ss page 1 of 10 sggp.25.4.a.02 specification model no. : sg g p. 25 a product name : gps/glonass smt patch antenna features : 25 m m* 25 mm* 4 .5 mm single feed smt mount gps: 1575mhz glonass: 1602mhz patent pending rohs ? photo :
s pe - 13 - 8 - 031/ e /ss page 2 of 10 sggp.25.4.a.02 1. introduction this ceramic 25m m gp s/glonass patch antenna is mounted via smt process and has been pre - tuned for a 50 *5 0 mm ground plane. custom part no's tuned for different ground - plane or layout positions and taking into account the specific conditions in your device can be created an d 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 center frequency 1592 3mhz with 50 *50 mm ground plane 3 bandwidth 8mhz min return loss < - 10 db 4 vswr 1.5 max center frequency 5 gain at zenith gps: - 0.14 dbic typ. glonass: 1.75dbic typ. 8 polarization rhcp 9 impedance 50 ohms 10 frequency temperature coefficient f 0 20ppm / o c - 40oc to +85oc 11 operating temperature - 40 ? c to + 85 ? c **changes in user groundplane and environment will offset centre frequency
s pe - 13 - 8 - 031/ e /ss page 3 of 10 sggp.25.4.a.02 3. electrical specifications 3.1 return loss, swr, impedance, measured on the test fixture
s pe - 13 - 8 - 031/ e /ss page 4 of 10 sggp.25.4.a.02 4. radiation patterns 4.1 1575mhz
s pe - 13 - 8 - 031/ e /ss page 5 of 10 sggp.25.4.a.02 4.2 1602 mhz
s pe - 13 - 8 - 031/ e /ss page 6 of 10 sggp.25.4.a.02 5. mechanical specifications 5.1 antenna dimensions and drawing contact taoglas engineering for footprint information at support@taoglas.com
s pe - 13 - 8 - 031/ e /ss page 7 of 10 sggp.25.4.a.02 5 .2 test jig and dimension sgg pd.25a
s pe - 13 - 8 - 031/ e /ss page 8 of 10 sggp.25.4.a.02 5 .3 sggpd.25a
s pe - 13 - 8 - 031/ e /ss page 9 of 10 sggp.25.4.a.02 6. antenna recommended soldering conditions 6.1 flux, 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 condit ions ? 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. unwrought pre - heating may cause cracks on the product, resulting in the deterioration of products quality. 6.3 reworking with soldering iron ? the following conditions must be strictly followed when using a soldering iron. pre - heating 150 , 1 min t ip temperature 290 max soldering iron output 30w max soldering time 3 second max
s pe - 13 - 8 - 031/ e /ss page 10 of 10 sggp.25.4.a.02 7 . packaging
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