HP24510A

a TAOGLAS. 

## GNSS Dual Feed Stacked Patch 

ed 

**Part No: HP24510A** 

**Description** 

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Passive High Precision GNSS L1/L2 Stacked Patch Ceramic Antenna 

**Features:** 

Bands Covered: 

• BeiDou (B1/B3) 

• GPS/QZSS (L1/L2) 

• GLONASS (G1/G2/G3) 

• Galileo (E1/E5b) 

• L Band Corrections 

Dual pin, dual feed, 4-pin configuration Dimensions: 45 x 45 x 10mm 

RoHS & Reach Compliant 

SPE-22-8-183-A 

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1. Introduction  2<br>2. Specification  3<br>3. Antenna Characteristics  5<br>4. Radiation Patterns  11<br>5. Mechanical Drawing  18<br>6. Packaging  19<br>7. Antenna Integration Guide  20<br>Changelog  27<br>**----- End of picture text -----**<br>


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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The Taoglas HP24510A is a high performance, multi-band passive GNSS antenna that has been carefully designed to provide fantastic positional accuracy on the L1/L2 GNSS spectrum. It covers GPS/QZSS L1/L2, GLONASS G1/G2/G3, Galileo E1/E5b, BeiDou B1/B3, as well as SBAS (WAAS/EGNOS/GAGAN/SDCM/SNAS) as well as the L Band at 1525MHz. 

Correct implementation of the HP24510A 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 to ensure a location is correctly established in a navigation system. 

Typical applications that benefit from high precision capabilities include: 

- Autonomous Driving 

- Precision Agriculture 

- Telematics & Container / Asset Tracking 

- Timing Accuracy Synchronization 

- Precision Positioning for Robotics 

The HP24510A 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 HP24510A can achieve genuine cm-level accuracy with proven results. 

Full integration guidelines are contained in Section 7 of this datasheet including the Taoglas HC125.A hybrid coupler that will be required for use for dual pin feed patch integrations. 

Contact your regional Taoglas Customer Services team for more information on any of the products listed above or for support regarding integration. 

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|**GNSS Frequency Bands**|**GNSS Frequency Bands**|**GNSS Frequency Bands**|**GNSS Frequency Bands**|**GNSS Frequency Bands**|**GNSS Frequency Bands**|
|---|---|---|---|---|---|
|**GPS**|**L1**<br>**1575.42 MHz**|**L2**<br>**1227.6 MHz**|**L5**<br>**1176.45 MHz**|||
||◼|◼||||
|**GLONASS**|**G1**<br>**1602 MHz**|**G2**<br>**1248 MHz**|**G3**<br>**1207 MHz**|||
||◼|◼|◼|||
|**Galileo**|**E1**<br>**1575.24 MHz**|**E5a**<br>**1176.45 MHz**|**E5b**<br>**1201.5 MHz**|**E6**<br>**1278.75 MHz**||
||◼||◼|||
|**BeiDou**|**B1C**<br>**1575.42 MHz**|**B1I**<br>**1561 MHz**|**B2a**<br>**1176.45 MHz**|**B2b**<br>**1207.14 MHz**|**B3**<br>**1268.52 MHz**|
||◼|◼|||◼|
|**QZSS (Regional)**|**L1**<br>**1575.42 MHz**|**L2C**<br>**1227.6 MHz**|**L5**<br>**1176.45 MHz**|**L6**<br>**1278.75e6**||
||◼|◼||||
|**IRNSS (Regional)**|**L5**<br>**1176.45 MHz**|||||
|||||||
|**SBAS**|**L1/E1/B1**<br>**1575.42 MHz**|**L5/B2a/E5a**<br>**1176.45 MHz**|**G1**<br>**1602 MHz**|**G2**<br>**1248 MHz**|**G3**<br>**1207 MHz**|
||◼||◼|◼|◼|



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||||||||
|---|---|---|---|---|---|---|
||**GNSS Electrical**||||||
||||||||
||**BeiDou B1**|**L Band**|**GPS L1**|**GPS L2**|**GLONASS G1**|**GLONASS G2**|
||||||||
|Frequency (MHz)|**1559-1563**|**1525-1559**|**1563-1587**|**1215-1239**|**1593-1610**|**1237-1254**|
||||||||
||||||||
|Efficiency (%)|75.8|57.5|75.8|60.5|46.0|56.6|
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|Average Gain (dB)|-1.20|-2.41|-1.21|-2.18|-3.37|-2.47|
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|Peak Gain (dBi)|4.48|4.33|4.50|3.05|2.46|2.86|
||||||||
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|Impedance|50 Ω||||||
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|Polarization|RHCP||||||
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||||||||
|Radiation Pattern|Directional||||||
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* Antenna properties were measured with the antenna mounted on 70*70mm Ground Plane. 

||**Mechanical**|
|---|---|
|Dimensions|45x45x10 mm|
|Weight|54.5 g|
|Material|Ceramic|



## **Environmental** 

|**Environmental**|**Environmental**|
|---|---|
|Temperature Range|-40°C to 85°C|
|RoHS Compliant|Yes|
|REACH Compliant|Yes|



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## Test Setup 

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


## VSWR 

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


## Average Gain 

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


## Axial Ratio 

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## **3.8** Axial Ratio vs Angle for Phi=0 | TIL 

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## **3.9** Axial Ratio vs Angle for Phi=90 | 

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## Test Setup 

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## B1LL1L2G1G2 Patterns at 1227.5 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## B1LL1L2G1G2 Patterns at 1246 MHz 

## XY Plane 

## XZ Plane 

## YZ Plane 

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## B1LL1L2G1G2 Patterns at 1525 MHz 

## XY Plane 

## XZ Plane 

## YZ Plane 

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## **4.5** B1LL1L2G1G2 Patterns at 1561 MHz 

## XY Plane 

## XZ Plane 

## YZ Plane 

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## **4.6** B1LL1L2G1G2 Patterns at 1575 MHz 

## XY Plane 

## XZ Plane 

## YZ Plane 

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## **4.7** B1LL1L2G1G2 Patterns at 1602 MHz 

## XY Plane 

## XZ Plane 

## YZ Plane 

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## **7.1** Schematic and PIN Definition ey 

The circuit symbol for the antenna is shown below. The antenna has 4 pins as indicated below. The L1 pin represents the higher GNSS frequency bands at 1525 - 1610MHz and the L2 pin represents the lower GNSS frequency bands at 1215- 1254MHz. 

|**Pin**<br>~~Po~~|**Description**<br>~~Po~~|
|---|---|
|1|L1P1 (0˚ )|
|2|L1P2 (-90˚ )|
|3|L2P1 (0˚ )|
|4|L2P2 (-90˚ )|



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## Antenna Integration 

The antenna should be placed at the center of the ground plane with a length and width of 70mm. Maintaining a square 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. 

Bottom side with solder mask 

Bottom side without solder mask 

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## 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. 

Top side 

Bottom side 

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## Evaluation Board 

Top side 

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Bottom side 

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## Evaluation Board 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.As are required for this antenna, one for the high GNSS band of operation (1525 - 1610MHz) and another for the low GNSS band (1215- 1254MHz). These hybrid couplers should be placed close to the antenna pins and terminated correctly using 2x 49.9ohm 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|Resistor|49.9 Ohms|Panasonic|ERJ-2RKF49R9X|



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## Footprint 

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## Changelog for the datasheet 

**SPE-22-8-183 – HP24510A** 

**Revision: A (Original First Release)** Date: 2023-03-06 Notes: Initial Release Author: Gary West 

**Previous Revisions** 

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