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page 1 of 14 sggp.25a specifcation part no. product name features sggp.25a gps/glonass smt patch antenna 25mm*25mm*4.5mm single feed smt mount gps: 1575mhz glonass: 1602mhz patent pending rohs sggp.25.4.a.02 |
page 2 of 14 no.: this ceramic 25mm gps/glonass patch antenna is mounted via smt process and has been pre-tuned for a 50*50mm ground plane. custom part nos tuned for different ground-plane or layout positions and taking into account the specifc conditions in your device can be created and supplied by taoglas. **changes in user groundplane and environment will offset centre frequency 1. introduction 2. specifcation parameter o riginal patch specifcation tested on 50*50mm ground plane specific ati on no tes 1 2 3 4 5 8 9 10 11 range of receiving frequency c enter frequency bandwidth vswr gain at zenith polarization impedance frequency temperature coeffcient ( t f) o perating temperature with 50*50mm ground plane return loss <-10 db center frequency -40oc to +85oc 1592 3mhz 8mhz min 1.5 max gps: -0.14dbic typ. glonass: 1.75dbic typ. 0 20ppm / oc gps:1575.42 mhz 1.023 mhz glonass: 1602 5 mhz rhcp 50 ohms -40c to +85c sggp.25.4.a.02 |
page 3 of 14 3.1. return loss, swr, impedance, measured on the test fxture 3. electrical specifcations center 1 592.000 000 mhz span 100.000 000 mhz 5 3 2 2 ch1 rfl log 5 db / ref 0 db 5:-5.8896 db 1 592.000 000 mhz ch3 rfl 1 u fs 5: 53.846 ? 61.018 ? 6.1 pf ch3 markers 49.156 ? 0.0020 ? 1.57542 ghz 49.844 ? -1.0605 ? 1.60200 ghz 24.081 ? 5.4004 ghz 1.60800 ghz 8.6426 ? 22.757 ? 1.62100 ghz * cor cor > > ch1 markers -41.556 db 1.57542 ghz -39.390 db 1.60200 ghz -8.9608 db 1.60800 ghz -2.4942 db 1.62100 ghz 1: 2: 3: 4: 1: 2: 3: 4: del del 1 3 4 1.592 ghz 4 5 2 sggp.25.4.a.02 |
page 4 of 14 4.1 1575mhz - xz and yz plane 4. radiation patterns pattern 1 2 model no. sggp.25 sggp.25 test mode xz yz freq (mhz) 1575.42 1575.42 max gain (dbi) -0.36 / 356.00 1.20 / 351.00 avg. gain (dbi) -3.54 -2.49 source polar v+h v+h date 2012/6/8 2012/6/8 min gain (dbi) -8.52 / 248.00 -9.29 / 105.00 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 sggp.25.4.a.02 | 150 60 30 (dbi) 180 270 90 240 210 300 330 120
page 5 of 14 pattern 1 2 model no. sggp.25 sggp.25 test mode xz yz freq (mhz) 1602.00 1602.00 max gain (dbi) 2.88 / 355.00 1.95 / 350.00 avg. gain (dbi) -0.65 -1.83 source polar v+h v+h date 2012/6/8 2012/6/8 min gain (dbi) -5.41 / 254.00 -8.76 / 249.00 4.2 1602mhz - xz and yz plane 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 sggp.25.4.a.02 | 150 60 30 (dbi) 180 270 90 240 210 300 330 120
page 6 of 14 5.1 antenna dimensions and drawing 5. mechanical specifcations sggp.25.4.a.02 |
page 7 of 14 5.1.1 footprint c opper keepout area sggp.25.4.a.02 |
page 8 of 14 5.1.2 paste area sggp.25.4.a.02 |
page 9 of 14 5.1.3 soder mask (negative) sggp.25.4.a.02 |
page 10 of 14 5.1.4 footprint c omposite sggp.25.4.a.02 |
page 11 of 14 5.2 test jig and dimension sggpd.25a sggp.25.4.a.02 |
page 12 of 14 5.3 sggpd.25a sggp.25.4.a.02 |
page 13 of 14 6. recommended refow soldering profle sggp.25a can be assembled following pb-free assembly. according to the standard ipc/jedec j-std-020c, the temperature profle suggested is as follows: phase profle features pb-free assembly (snag cu) preheat temperature min(tsmin) 150c temperature max(tsmax) 200c time(ts) from (tsmin to tsmax) 60-120 seconds ramp-up avg. ramp-up rate (tsmax to tp) 3c/second(max) reflow temperature(tl) 217c total time above tl (tl) 30-100 seconds peak temperature(tp) 260c time(tp) 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 soldering 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 tempera - ture over270c10c or 3 seconds, it will make cause component surface peeling or damage. sggp.25.4.a.02 |
page 14 of 14 7. packaging taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifcations and product descriptions at any time without 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. sggp.25.4.a.02 |

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