SPECIFICATION Model No. : SGGP.25A Product Name : GPS/GLONASS SMT Patch Antenna Features 25mm*25mm*4.5mm Single Feed SMT Mount GPS: 1575MHz GLONASS: 1602MHz Patent pending : RoHS Photo : SPE-13-8-031/E/SS Page 1 of 10 SGGP.25.4.A.02 1. Introduction 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 no's 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*50mm ground plane No 1 Parameter Specification Notes Range of Receiving GPS:1575.42 MHz ± 1.023 MHz Frequency GLONASS: 1602± 5 MHz With 50*50mm ground 2 Center Frequency 1592± 3MHz 3 Bandwidth 8MHz min 4 VSWR 1.5 max 5 Gain at Zenith 8 Polarization RHCP 9 Impedance 50 Ohms 10 11 plane Return Loss <-10 dB Center Frequency GPS: -0.14dBic typ. GLONASS: 1.75dBic typ. Frequency Temperature Coefficient（τf） 0 ± 20ppm / oC Operating Temperature -40ºC to +85ºC -40C to +85C **Changes in user groundplane and environment will offset centre frequency SPE-13-8-031/E/SS Page 2 of 10 SGGP.25.4.A.02 3. Electrical Specifications 3.1 Return Loss, SWR, Impedance, measured on the test fixture SPE-13-8-031/E/SS Page 3 of 10 SGGP.25.4.A.02 4. Radiation Patterns 4.1 1575MHz SPE-13-8-031/E/SS Page 4 of 10 SGGP.25.4.A.02 4.2 1602MHz SPE-13-8-031/E/SS Page 5 of 10 SGGP.25.4.A.02 5. Mechanical Specifications 5.1 Antenna Dimensions and Drawing Contact Taoglas Engineering for Footprint Information at [email protected] SPE-13-8-031/E/SS Page 6 of 10 SGGP.25.4.A.02 5.2 Test Jig and Dimension SGGPD.25A SPE-13-8-031/E/SS Page 7 of 10 SGGP.25.4.A.02 5.3 SGGPD.25A SPE-13-8-031/E/SS Page 8 of 10 SGGP.25.4.A.02 6. Antenna Recommended Soldering Conditions 6.1 Flux, Solder • Use rosin-based flux. Don’t 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 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 Tip temperature 290℃ max Soldering iron output 30w max Soldering time 3 second max SPE-13-8-031/E/SS Page 9 of 10 SGGP.25.4.A.02 7. Packaging SPE-13-8-031/E/SS Page 10 of 10 SGGP.25.4.A.02