GPDF5012.A

Multiband High Precision GNSS Stacked Patch Antenna Part No: GPDF5012.A Description: Passive Multiband High Precision GNSS Stacked Patch Antenna Features: Bands Covered: • GPS (L1/L2/L5) • IRNSS (L5) • QZSS (L1/L2C/L5) • Galileo (E1/E5a/E5b) • GLONASS (G1/G2/G3) • BeiDou (B1/B2a/B2b) Dual pin, dual feed, 4-pin configuration Dimensions: 50 x 50 x 12mm RoHS & Reach Compliant SPE-20-8-103-E 1. Introduction 3 2. Specifications 4 3. Antenna Characteristics (with hybrid coupler) 6 4. Radiation Patterns 11 5. Field Test Data 17 6. Mechanical Drawing 19 7. Evaluation Board Mechanical Drawing 20 8. Antenna Integration Guide 21 9. Packaging 28 Changelog 29 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 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. SPE-20-8-103-E www.taoglas.com 2 1. Introduction 1. Introduction 1. Introduction 1. Introduction 1. 1. 1. 1. Introduction The Taoglas GPDF5012.A is a high performance, multi-band passive GNSS antenna that has been carefully designed to provide fantastic positional accuracy on the full GNSS spectrum. It covers GPS/QZSS L1/L2/L5, GLONASS G1/G2/G3, Galileo E1/E5a/E5b, BeiDou B1/B2a/B2b, NAVIC L5, as well as SBAS (WAAS/EGNOS/GAGAN/SDCM/SNAS). Introduction Correct implementation of the GPDF5012.A allows the user to achieve higher location accuracy, as well as stability of position tracking in urban environments. The stacked patch construction has excellent performance across the full bandwidth of the antenna. Its design has an even gain across the hemisphere, giving excellent axial ratio, which in turn makes it extremely resilient to multipath rejection and provides excellent phase centre stability. Introduction Typical applications that benefit from high precision capabilities include: • Autonomous Driving • Precision Positioning for Robotics • Precision Agriculture • Telematics & Container / Asset Tracking • Timing Accuracy Synchronization Introduction The GPDF5012.A is the latest embedded addition to Taoglas’ product portfolio of high precision GNSS antennas. When used on the base and/or the rover as part of an RTK configuration, the GPDF5012.A can achieve genuine cm-level accuracy with proven results. Full integration guidelines are contained in Section 8 of this datasheet including the Taoglas HC125.A hybrid coupler that will be required for use for dual pin feed patch integrations. An active version of this antenna, the ADFGP.50A.07.0100C is available and supplied with 100mm cable and I-PEX MHFI connector as standard. Contact your local Taoglas Customer Services team for more information on any of the products listed above or for support regarding integration. SPE-20-8-103-E www.taoglas.com 3 2. Specifications GNSS Frequency Bands Covered L2 L5 3. GPS AntennaL1 Characteristics2. Specifications GLONASS 3. ▓ ▓ ▓ G1 G2 G3 ▓ Antenna▓ Characteristics Galileo ▓ E1 E5a E5b E6 ▓ ▓ ▓ □ B2a B2b B3 4. BeiDouAntennaB1 Radiation Patterns3. Antenna ▓ QZSS Characteristics2. L1 (Regional) ▓ 3. IRNSS (Regional) ▓ ▓ Specifications L2C L5 ▓ ▓ L5 Antenna Characteristics2. □ L6 □ Specifications ▓ SBAS L1/E1/B1 L5/B2a/E5a G1 G2 G3 ▓ ▓ ▓ ▓ ▓ 3.*SBAS systems: Antenna Characteristics WASS(L1/L5), EGNOSS(E1/E5a), SDCM(G1/G2/G3), SNAS(B1,B2a), GAGAN(L1/L5), QZSS(L1/L5), KAZZ(L1/L5). 4. Antenna Radiation Patterns3.Antenna Characteristics 4. Antenna Radiation Patterns 4. Antenna Radiation Patterns3.Antenna Characteristics 4. Bands and Constellations Antenna RadiationGNSS Patterns3. Antenna Characteristics2. SPE-20-8-103-E Specifications www.taoglas.com 4 GNSS Electrical Frequency (MHz) 1176.45 1227.6 1561 1575.42 1602 VSWR (max.) 1.5:1 1.5:1 1.5:1 1.5:1 1.5:1 Passive Antenna Efficiency (%) 27.6 30.6 51.2 65.3 68.6 Passive Antenna Gain at Zenith (dBi) 0.90 0.92 2.96 4.32 4.44 Axial Ratio (dB) 1.46 1.03 1.24 1.08 1.19 Group Delay (ns) 2.5 6 3 3 3 PCO (cm) 0.9 1.0 1.1 1.1 1.1 PCV (cm) 1.0 1.1 1.2 1.2 1.2 Polarization RHCP Impedance 50Ω Note: The antenna with Hybrid coupler was tested on a 70X70 mm ground plane The PCO and PCV are calculated using a field of view of 60° elevation from zenith Mechanical Height 12.5 mm Planner Dimension 50 x 50 mm diameter Weight 86 g Environmental Temperature Range -40°C to 85°C RoHS Compliant Yes REACH Compliant Yes SPE-20-8-103-E www.taoglas.com 5 3. Antenna Characteristics(with hybrid coupler) 3.1 4. L2_L5 - Return Loss (From Hybrid Couplers) Antenna Radiation Patterns3.Antenna 0 -5 Characteristics -10 -15 4. Antenna Radiation Patterns -20 Return Loss [dB] 4. -25 -30 Antenna Radiation Patterns3.Antenna -35 Characteristics -40 -45 -50 4. Antenna Radiation Antenna 1000 1050 1100 Patterns3. 1150 1200 1250 1300 1350 1400 1700 1750 1800 Frequency [MHz] Characteristics 3.2 L1 - Return Loss (From Hybrid Couplers) 0 4. Antenna Radiation Patterns -5 -10 4. 4. Return Loss [dB] -15 Antenna Radiation Patterns -20 -25 -30 Antenna Radiation Patterns -35 -40 4. -45 Antenna Radiation Patterns3.Antenna -50 1400 Characteristics1450 4. 1500 1550 1600 1650 Frequency [MHz] Antenna Radiation Patterns3.Antenna SPE-20-8-103-E www.taoglas.com 6 3.3 L2_L5 - Efficiency 100 90 80 Efficiency[%] 70 60 50 40 30 20 10 0 1000 1050 1100 1150 1200 1250 1300 1350 1400 1650 1700 1750 1800 Frequency [MHz] 3.4 L1 – Efficiency 100 90 80 Efficiency[%] 70 60 50 40 30 20 10 0 1400 1450 1500 1550 1600 Frequency [MHz] SPE-20-8-103-E www.taoglas.com 7 3.5 L2_L5 - Average Gain 0 Average Gain (dB) -2 -4 -6 -8 -10 -12 1000 1050 1100 1150 1200 1250 1300 1350 1650 1700 1750 1400 Frequency [MHz] 3.6 L1 – Peak Gain 0 Average Gain (dB) -2 -4 -6 -8 -10 -12 1400 1450 1500 1550 1600 1800 Frequency [MHz] SPE-20-8-103-E www.taoglas.com 8 3.7 L2_L5 - Peak Gain 10 8 6 Peak Gain [dBi] 4 2 0 -2 -4 -6 -8 -10 1000 1050 1100 1150 1200 1250 1300 1350 1400 Frequency [MHz] 3.8 L1 - Peak Gain 10 8 6 Peak Gain [dBi] 4 2 0 -2 -4 -6 -8 -10 1400 1450 1500 1550 1600 1650 1700 1750 1800 Frequency [MHz] SPE-20-8-103-E www.taoglas.com 9 3.9 Axial Ratio 20 L1 18 L2_L5 16 Axial Ratio [dB] 14 12 10 8 6 4 2 0 1000 1100 1200 1300 1400 1500 1600 1700 1800 Frequency [MHz] Phi=0 SPE-20-8-103-E Phi=90 www.taoglas.com 10 4. Radiation Patterns 4. 4. 4. 4.1 Test Setup Antenna Radiation Patterns Antenna Radiation Patterns Z 4. Antenna Radiation Patterns 4. Antenna Radiation Patterns 4. Antenna Radiation Patterns 4. Antenna Radiation Patterns 4. Antenna Radiation Patterns SPE-20-8-103-E X Y www.taoglas.com 11 4.2 GNSS L1 Band 3D and 2D Radiation Patterns Gain total, 1560MHz XY Plane SPE-20-8-103-E XZ Plane YZ Plane www.taoglas.com 12 Gain total, 1575.42MHz XY Plane SPE-20-8-103-E XZ Plane YZ Plane www.taoglas.com 13 Gain total, 1600MHz XY Plane SPE-20-8-103-E XZ Plane YZ Plane www.taoglas.com 14 4.3 GNSS L2 L5 Band 3D and 2D Radiation Patterns Gain total, 1177MHz XY Plane SPE-20-8-103-E XZ Plane YZ Plane www.taoglas.com 15 Gain total, 1228MHz XY Plane SPE-20-8-103-E XZ Plane YZ Plane www.taoglas.com 16 5. Field Test Results This section outlines the field test result for GPDF5012.A antenna. The test was performed when the antenna was 6.mounted Packaging5. Drawing on a static rooftop testMechanical set up in an open sky environment for a minimum of 6 hours. Taoglas will show the field test results using the following receivers: 6.5.1 Packaging Ublox ZED-F9P-0XB Receiver features: 7. • • • • Multi-band GNSS: 184-channel GPS L1C/A L2C, GLONASS: L1OF L2OF, Galileo: E1B/C E5b, BeiDou: B1I B2I, QZSS: L1C/A L2C Multi‑band RTK with fast convergence times and reliable performance Nav. update rate RTK up to 20 Hz Position accuracy = RTK 0.01 m + 1 ppm CEP Application Note6. Packaging5. Mechanical Drawing Positioning Accuracy Table (2D Accuracy) Test Condition 6. DRMS(cm) CEP (50%) DRMS (68%) RTK DISABLED 46.6 56.4 Packaging5. Mechanical Drawing 70x70mm Ground Plane RTK ENABLED 1.0 1.2 6. Packaging 7. Application Note6. Packaging 2DRMS (95-98.2%) TTFF (sec) 112.8 32 2.4 32 RTK Availability 70x70 mm ground plane No RTK Float 7. Application Note 7. Application Note6. Packaging 7. Application Note6. Packaging5. Fixed Mechanical Drawing 6. Packaging5. SPE-20-8-103-E Mechanical Drawing www.taoglas.com 17 5.2 Ublox NEO-F9P-15B Receiver features: • • • • Multi-band GNSS: GPS / QZSS (L1C/A, L5) GLONASS (L1OF) Galileo (E1-B/C, E5a) BeiDou (B1I, B2a) NavIC (SPS-L5) Multi‑band PPP-RTK with fast convergence times and reliable performance Nav. update rate RTK up to 25 Hz Position accuracy = RTK 0.01 m + 1 ppm CEP Positioning Accuracy Table (2D Accuracy) Test Condition 70x70mm Ground Plane DRMS(cm) CEP (50%) DRMS (68%) 2DRMS (95-98.2%) TTFF (sec) PPP-RTK DISABLED 103.19 123.52 247.06 27 PPP-RTK ENABLED 16.7 20.04 40.08 33 *The RTK correction service used in previous measurements provides superior corrections compared to the PPP-RTK service used for measurements on the NEO-F9P. PPP-RTK Availability 70x70 mm ground plane 6% No PPP-RTK PPP-RTK Float PPP-RTK Fixed 94% SPE-20-8-103-E www.taoglas.com 18 6. Mechanical Drawing (Units: mm) 6. Packaging5. 6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing Mechanical Drawing 6. Packaging5. Mechanical Drawing 6. Packaging 7. Application Note6. Packaging 7. Application Note 7. Application Note6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing 6. Packaging5. SPE-20-8-103-E Mechanical Drawing www.taoglas.com 19 8. 7. Packaging Board Drawing (Units: mm) Evaluation 6. Packaging5. 6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing Mechanical Drawing 6. Packaging5. Mechanical Drawing 6. Packaging 7. Application Note6. Packaging 7. Application Note 7. Application Note6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing 6. Packaging5. SPE-20-8-103-E Mechanical Drawing www.taoglas.com 20 8. PackagingIntegration Guide Antenna 6. Packaging5. 6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing Mechanical Drawing 6. Packaging5. Mechanical Drawing 6. Packaging 7. Application Note6. Packaging 7. Application Note 7. Application Note6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing 6. Packaging5. SPE-20-8-103-E Mechanical Drawing www.taoglas.com 21 8.1 Schematic Symbol and Pin Definitions The circuit symbol for the antenna is shown below. The antenna has 4 pins as indicated below. The L1P1 and L1P2 (Pin 1 and 2) represent the higher GNSS frequency bands at 1559 - 1610MHz and the L2P1 and L2P2 (Pin 3 and 4) represent the lower GNSS frequency bands at 1164 - 1300MHz, including L5, E5a and E5b bands. SPE-20-8-103-E Pin Description 1 L1P1 (0˚) 2 L1P2 (-90˚) 3 L2P1 (0˚) 4 L2P2 (-90˚) www.taoglas.com 22 8.2 Antenna Integration The antenna should be placed at the center of the PCB, in our integration we have used a 70mm X 70mm PCB evaluation board. Maintaining a symmetric ground plane shape and symmetric environment around the antenna is critical to maintaining the excellent axial ratio and phase center performance shown in this datasheet. The opposite side of the PCB from the antenna may be used for device electronics and does not need to maintain symmetry. SPE-20-8-103-E www.taoglas.com 23 8.3 PCB Layout The footprint and clearance on the PCB must comply with the antenna specification. The PCB layout shown in the diagram below demonstrates the antenna footprint. Note that the hybrid couplers may be placed closer to the antenna pins. It is important that the trace length from the antenna pins are equal to their respected hybrid coupler. This is necessary to maintain the integrity of the phase in the signal. SPE-20-8-103-E www.taoglas.com 24 8.4 Eval Board SPE-20-8-103-E www.taoglas.com 25 8.5 Matching Circuit Each patch element uses two orthogonal feeds that need to be combined in a hybrid coupler to ensure optimal axial ratio. Taoglas recommends our HC125.A, a high-performance hybrid coupler specifically engineered for use with our multi feed patches. Two HC125.A’s are required for this antenna, one for the high GNSS band of operation (1559-1610MHz) and another for the low GNSS band (1164MHz – 1300MHz). These hybrid couplers should be placed close to the antenna pins and terminated correctly using 2x 100ohm resistors in parallel. The output of each of the hybrid couplers can feed into separate paths for high and low band GNSS filtering and amplification. Designator Type Value Manufacturer Manufacturer Part Number R1, R2, R3, R4 Resistor 100Ω (1%) Vishay CRCW0603100RFKEC SPE-20-8-103-E www.taoglas.com 26 8.6 Footprint SPE-20-8-103-E www.taoglas.com 27 8. 9. Packaging 6. Weight: 690g Packaging5. 6. Packaging 7. Dimensions: 263*154*96 mm Application Note6. Packaging5. Weight: 3Kg 8pcs GPDF5012.A per Tray Mechanical Drawing 32pcs GPDF5012.A per Inner Carton Mechanical Drawing 6. Packaging5. Mechanical Drawing 128pcs GPDF5012.A per Inner Carton Dimensions: 327*280*218 mm Weight: 12.5Kg 6. Packaging 7. Application Note6. Packaging 7. Application Note 7. Application Note6. Packaging 7. Application Note6. Packaging5. Mechanical Drawing 6. Packaging5. SPE-20-8-103-E Mechanical Drawing www.taoglas.com 28 Changelog for the datasheet SPE-20-8-103 – GPDF5012.A Revision: E (Current Version) Date: Notes: Author: 2023-07-25 Updated Antenna Field Testing Gary West Previous Revisions Revision: D Date: Notes: Author: 2023-05-16 Updated test data Gary West Revision: C Date: Notes: Author: 2022-01-11 Added integration guide Gary West Revision: B Date: Notes: Author: 2022-01-11 Added integration guide Gary West Revision: A (Original First Release) Date: Notes: Author: SPE-20-8-103-E 2020-10-14 Initial Release Jack Conroy www.taoglas.com 29 www.taoglas.com SPE-20-8-103-E www.taoglas.com © Taoglas 30