GPSDSF.35.7.A.08 TAOGLAS | Alldatasheet

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Technical content

SPE-18-8-078-B/T/AH Page 1 of 15 Specification Product Name : Embedded 2in1 Low Profile Stacked Patch for GPS/ GLONASS/GALILEO & SDARS (XM) Feature : Highest Efficiency and Gain GPS: 69.8% Efficiency @1575.42 MHz GLONASS: 78.6% Efficiency @1602 MHz SDARS (XM): 67.6% Efficiency @2338.75 MHz AR values: GPS: 5.0 dB typ. GLONASS: 7.5 dB typ. SDARS(XM): 3.8 dB typ. RHCP on GPS and GLONASS / LHCP on SDARS Ground-plane Through–Hole Mounting Pin Type Dual Feed Patch Assembly Dimensions: 35*35*7.15mm Tuned for Centre Positioning on a 70*70mm RoHS Compliant

SPE-18-8-078-B/T/AH Page 2 of 15 1. Introduction The GPSDSF.35.7.A.08 is a passive 35x35mm ceramic stacked patch antenna with both SDARS and GNSS capabilities. This patch provides world-class performance for both SDARS and GNSS services, with AR GPS:5.0 dB typ, GLONASS: 7.5 dB typ. SDARS(XM): 3.8 dB typ right hand circular polarization and nearly 70% efficiency at 2332.5 MHz for SDARS and 70-80% efficiency at GPS/GLONASS/GALILEO frequencies. Using one patch for both services results in the most economical and space -efficient solution for demanding applications requiring both SDARS and GNSS functionality. At just 7.15 mm in height, the GPSDSF.35 is also extremely low-profile. Typical Applications:

  • OEM Sharkfin Automotive Antennas
  • Truck Mounted Antenna Systems This antenna has been tuned and tested on a 70 x 70 mm ground plane. Custom tuning services can be provided for further optimization to customer -specific device environments. Contact your regional Taoglas sales office for support.

SPE-18-8-078-B/T/AH Page 3 of 15 2. Specification Electrical Frequency GPS: 1575.42 ± 1.023 MHz GLONASS: 1602 ± 5MHz SDARS(XM) : 2338.75 ± 6.25 MHz Centre Frequency 1591 ± 3 MHz 2338.75 ± 3 MHz Return Loss GPS: -10dB max. GLONASS: -10dB max. SDARS(XM): -10dB max. Zenith Gain GPS: +3.4 dBi typ. GLONASS: +3.6 dBi typ. SDARS(XM): +4.7 dBi typ. Efficiency GPS: 69 % GLONASS: 78 % SDARS(XM): 67 % Axial Ratio at Zenith GPS: 5.0 dB typ. GLONASS: 7.5 dB typ. SDARS(XM): 3.8 dB typ. Polarization R.H.C.P. For GPS/ GLONASS L.H.C.P. For SDARS(XM) Impedance 50  Mechanical Dimensions 35 x 35 x 7.15mm GPS: 35 x 35 x 4 mm SDARS: 25 x 25 x 3 mm Material Ceramic Pin Diameter 0.8mm Pin Length 2.0mm Weight 22.1g ENVIRONMENTAL Operation Temperature -40°C to +85°C Humidity Non-condensing 65°C 95% RH * Antenna properties were measured with the antenna mounted on 70*70mm Ground Plane

SPE-18-8-078-B/T/AH Page 4 of 15 3. Antenna Characteristics

3.1 Return Loss

3.2 Efficiency

-25 -20 -15 -10 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 (dB) (MHz) GPS_GLONASS SDARS(XM) 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 (%) (MHz) GPS_GLONASS SDARS(XM)

SPE-18-8-078-B/T/AH Page 5 of 15

3.3 Average Gain

3.4 Peak Gain

-10 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 (dB) (MHz) GPS_GLONASS SDARS(XM) 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 (dBi) (MHz) GPS_GLONASS SDARS(XM)

SPE-18-8-078-B/T/AH Page 6 of 15

3.5 Axial Ratio (Zenith is at 0°)

0 30 60 90 120 150 180 210 240 270 300 330 360 GPS GLONASS SDARS(XM) (dB) (degree) X-Z 0 30 60 90 120 150 180 210 240 270 300 330 360 GPS GLONASS SDARS(XM) (dB) (degree) Y-Z

SPE-18-8-078-B/T/AH Page 7 of 15

3.6 Isolation

3.7 XM Gain Requirements (Satellite) – Ground Plane

Angle(degrees) Linear Average Gain(dBic) Passive Ground Plane 20≤φ≤25 -1.3 25≤φ≤30 -0.7 30≤φ≤50 0.8 50≤φ≤70 2.9 70≤φ≤90 3.9 XM Gain Requirements (Terrestrial) – Ground Plane AUT Location Elevation Angle(degrees) Antenna Mean Passive VP Gain Over Solid Angle (dBi) Antenna P/P Gain variation (dB) Passive Ground Plane 0°≤φ≤10° -5.7 - Φ=5° - 4.3 -70 -60 -50 -40 -30 -20 -10 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 Isolation (MHz) (dB)

SPE-18-8-078-B/T/AH Page 8 of 15 4. Antenna Radiation Pattern

4.1 Measurement Setup

The GPSDSF.35.7.A.08 antenna is tested on a 70 x 70mm ground plane in a CTIA certified Anechoic Chamber. The test setup is shown below.

SPE-18-8-078-B/T/AH Page 9 of 15 4.2 2D Radiation Pattern X-Y Plane X-Z Plane Y-Z Plane -45 -35 -25 -15 120 150 180 210 240 270 300 330 (dBi) 1575.42MHz 1602MHz Y X -45 -35 -25 -15 120 150 180 210 240 270 300 330 (dBi) 1575.42MHz 1602MHz 2338.75MHz Z X -45 -35 -25 -15 120 150 180 210 240 270 300 330 (dBi) 1575.42MHz 1602MHz Z Y

SPE-18-8-078-B/T/AH Page 10 of 15 5. 3D Radiation Pattern

SPE-18-8-078-B/T/AH Page 11 of 15 6. Mechanical Drawing (Unit:mm)

SPE-18-8-078-B/T/AH Page 12 of 15 7. Feed Pin Pad Layout Recommendation (unit:mm)

SPE-18-8-078-B/T/AH Page 13 of 15 8. Evaluation Board - (Unit:mm) GPSDSFD.35.7.A.08

SPE-18-8-078-B/T/AH Page 14 of 15 9. Packaging

SPE-18-8-078-B/T/AH Page 15 of 15 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 the 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.