GPSF.36.7.A.30

## +-_Qd iG Bo a) +) (© C) 

|1.|Introduction|3|
|---|---|---|
|2.|Specifications|4|
|3.|Antenna Characteristics|7|
|4.|Radiation Patterns|12|
|5.|Mechanical Drawing|14|
|6.|Packaging|15|
||Changelog|16|



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. 

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## 1. Introduction 

The GPSF.36.7.A.30 is a 36x36mm ceramic GPS L1/L2 low profile, low axial-ratio, embedded stacked passive patch antenna with a 7mm height. It is designed as a high performance yet economical solution for highest accuracy centimeter level tracking in telematics applications. 

Typical applicable industries are 

- UAVs and Drones 

- Transportation 

- Autonomous Vehicles 

- Marine 

- Agriculture 

- Navigation 

This compact antenna exhibits excellent gain and radiation pattern stability on both L1 and L2 bands, improved reliability of a GPS fix in urban areas, better signal reception with more satellites acquired, and a quicker time to first fix. 

The antenna has been tuned and tested on a 70 X 70 mm ground plane, working at GPS 1575.42MHz and L2 1227.6MHz, with 5.44dBi gain and 3.10dBi gain, respectively. It can be easily through-hole mounted on PCB via pin. The double-sided adhesive on the bottom of the patch helps to keep it in place while being assembled. 

For further optimization to customer specific device environments, a custom tuned patch antenna and circuit integration service into your device can be supplied, subject to NRE and MOQ. Contact your regional Taoglas customer support team for this requirement, and for support to integrate and test this antenna’s performance in your device. 

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## **2.** Specifications 

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## **GNSS Frequencies Covered** 

|**GNSS Frequencies Covered**|**GNSS Frequencies Covered**|**GNSS Frequencies Covered**|**GNSS Frequencies Covered**|**GNSS Frequencies Covered**|**GNSS Frequencies Covered**|
|---|---|---|---|---|---|
|**GPS**|L1|L2|L5|||
||▓|▓|□|||
|**GLONASS**|G1|G2|G3|||
||▓|▓|□|||
|**Galileo**|E1|E5a|E5b|E6||
||▓|□|▓|□||
|**BeiDou**|B1|B2a|B2b|B3||
||▓|▓|□|□||
|**QZSS (Regional)**|L1|L2C|L5|L6||
||▓|▓|□|□||
|**IRNSS**<br>**(Regional)**|L5|||||
||□|||||
|**SBAS**|L1/E1/B1|L5/B2a/E5a|G1|G2|G3|
||▓|□|▓|▓|□|



*SBAS systems: WASS(L1/L5), EGNOSS(E1/E5a), SDCM(G1/G2/G3), SNAS(B1,B2a), GAGAN(L1/L5), QZSS(L1/L5), KAZZ(L1/L5). 

|**Electrical**|**Electrical**|**Electrical**|
|---|---|---|
||**GPS L1**|**GPS L2**|
|**Center Frequency**|**1575.42 MHz**|**1227.60 MHz**|
|Return loss (dB)|< -10|< -10|
|Efficiency (%)|91.30|67.57|
|Peak Gain (dBi)|5.44|3.10|
|Axial Ratio at Zenith (dB)|1.69|2.70|
|Impedance|50 Ohm||
|Polarization|RHCP||



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|**Mechanical**|**Mechanical**|**Mechanical**|
|---|---|---|
||GPS L1|GPS L2|
|Ceramic Dimension|25*25*4mm|36*36*3 mm|
|Pin Diameter|0.80 mm||
|Pin Length|1.50 mm||
|PCB Dimension|70*70 mm||
|Weight|23.4g||



|**Environmental**|**Environmental**|
|---|---|
|Operation Temperature|-40°C to 85°C|
|Humidity|Non-condensing 65°C 95% RH|
|*Tested on square 70*70 mm ground-plane.||



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|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|**Field Test Result with 70*70mm ground plane**<br>~~ee~~|
|---|---|---|---|---|---|---|---|---|
|**Frequency**<br>~~ee~~|**GPS L1**<br>~~ee~~|**GPS L2**<br>|**Galileo E1**<br>|**Galileo E5b**<br>|**GLONASS G1**<br>|**GLONASS G2**<br>|**BeiDou B1I**<br>|**BeiDou B2I**<br>|
||**1563-1587**<br>~~eess~~|**1215-1239.6**<br>~~ss~~|**1559-1591**<br>~~ss~~|**1189-1214**<br>~~ss~~|**1598-1605**<br>~~ss~~|**1242-1249**<br>~~ss~~|**1559-1563**<br>~~ss~~|**1200-1214**<br>~~ss~~|
|Carrier-to-Noise Values(dB-<br>Hz)<br>~~ee~~|43.3<br>~~ee~~|35.6<br>|40.2<br>|36.4<br>|37.8<br>|30.1<br>|40<br>|35.6<br>|
|2*DRMS Positioning<br>Accuracy (cm)**without** **RTK**|150|150|150|150|150|150|150|150|
|2*DRMS Positioning<br>Accuracy (cm)**with** **RTK**|12|12|12|12|12|12|12|12|
|TTFF(s)|33|33|33|33|33|33|33|33|
|Group Delay @ Zenith<br>Variation Across Single<br>Constellation(ns)|2.2|12|2|12|20|5|2.2|12|
|Phase Centre Offset PCO<br>(cm)|4|4.6|4|4.6|4|4.6|4|4|
|Phase Centre Variation<br>PCV (mm)|0.5|0.4|0.8|14.5|0.8|0.5|0.7|2|
|Axial Ratio (dB)|2|10|8|20|16|20|5.5|20|



*All outdoor measurements performed on the roof top of the Taoglas R&D Labs facility in Dublin Ireland. 

** Recommended Minimum C/No for Standard Precision Acquisition/ Tracking (dB-Hz): 26-30/ 12-15. 

***Data Measured Free Space. 

****Group Delay, PCO, PCV and Axial Ratio values includes Active Circuitry. 

*****Ublox C099-F9P application board is used for Field test Measurements. 

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RTK AVAILABILITY<br>| No RTK 0%<br>|| Float  38%<br>a Fixed  62%<br>**----- End of picture text -----**<br>


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## **3.** Antenna Characteristics 

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3.1 Return Loss<br>**----- End of picture text -----**<br>


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3.2 Efficiency<br>**----- End of picture text -----**<br>


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3.3 Peak Gain<br>**----- End of picture text -----**<br>


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3.4 Average Gain<br>**----- End of picture text -----**<br>


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- **3.5** Axial Ratio 

- of eT) rosa 

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## **4.** Radiation Patterns 

## **4.** 

## **4.1** Test Setup 

The GPSF.36.7.A.30 antenna is tested in free-space on a 70 mm X 70 mm ground plane in an Anechoic Chamber. The test setup is shown below. 

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## **4.2** 3D and 2D Radiation Patterns _ 

**GPS L1 1575.42MHz** 

**GPS L2 1227.6MHz** 

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XY Plane   XZ Plane   YZ Plane<br>ee<br>**----- End of picture text -----**<br>


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X  Z  Z<br>46 1<br>Y  X  Y<br>**----- End of picture text -----**<br>


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## **5.** Mechanical Drawing (Units: mm) 

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## **6.** Packaging 

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## Changelog for the datasheet 

**SPE-17-8-027 - GPSF.36.7.A.30 Revision: C (Current Version)** Date: 2019-12-08 Changes: Amended GNSS data and drawing Changes Made by: Jack Conroy 

## **Previous Revisions** 

**Revision: B** Date: 2019-12-08 Changes: Added GNSS Frequency Bands Matrix and RTK Test Data Changes Made by: Yu Kai Yeung 

**Revision: A (Original First Release)** Date: 2017-03-05 Notes: Initial Release Author: Wayne Yang 

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