SXP.25.4.A.02

RF Antenna, 2.336 to 2.341GHz, Left Hand Circular, 6.16dBi, Adhesive / Pin

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
Manufacturer: TAOGLAS
Product type:
Gain: 6.16dBi
SVHC: No SVHC (21-Jan-2025)
VSWR: -
Input Power: 10W
Antenna Type: Patch / SDARS
Frequency Max: 2.341GHz
Frequency Min: 2.336GHz
Product Range: -
Input Impedance: 50ohm
Antenna Mounting: Adhesive / Pin
Antenna Polarisation: Left Hand Circular
Delivery and price
Units per pack	500
Price	1.3 €
Current stock	100+
Lead time	30 days
Datasheet
## ae TAOGLAS. 

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**Part No: SXP.25.4.A.02** 

**Description** 

SDARS 2320~2345MHz Dual-Band XM & Sirius Patch Antenna 

**Features:** 

SDARS (Satellite Digital Audio Radio Services) High Efficiency >85% across all bands Radiation pattern designed for XM & SIRIUS Requirements Optimized LHCP Radiation Pattern Pin & Adhesive Mounting Dims: 25 x 25 x 4mm RoHS & Reach Compliant 

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SPE-25-8-109-B 

**==> picture [358 x 218] intentionally omitted <==**

**----- Start of picture text -----**<br>
1. Introduction  3<br>2. Specification  4<br>3. Mechanical Drawing  6<br>4. Antenna Integration Guide  7<br>5. Packaging  13<br>6. Antenna Characteristics  14<br>7. Radiation Patterns  20<br>Changelog  37<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 SXP.25.4.A.02 is part of a series of high-efficiency patch antennas designed for use with Satellite Digital Audio Radio Services (SDARS). It features left-hand circular polarization and excellent gain characteristics in the 2320 to 2345 MHz band, making it compatible with the most popular satellite radio services available in many new vehicles. 

The SXP.25 comes in a convenient, compact form factor, with dimensions of just 25mm x 25mm x 4mm, and is manufactured with high-quality ceramic. It is mounted via pin and 3M adhesive tape. 

For further optimization to customer-specific device environments, custom tuned patch antennas can be supplied. Your regional Taoglas sales office can help you identify the best patch antenna for your specific SDARS application. 

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|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|**SDARS Electrical**|
|---|---|---|---|---|---|---|---|---|
|**System**|**Frequency**<br>**(MHz)**|**Measurement**|**Measurement**<br>**Efficiency (%)**|**Efficiency (%)**<br>**Average Gain**<br>**(dB)**|**Average Gain**<br>**Peak Gain**<br>**(dBi)**|**Impedance**|**Polarization**|**Max. input power**|
|**XM**|2332.5-2345|100x100cm<br>Ground Plane|87.7|-0.57|5.11|50 Ω|LHCP|10W|
|||50x50cm<br>Ground Plane|93.8|-0.28|5.92||||
|||30x30cm<br>Ground Plane|87.4|-0.59|5.56||||
|||15x15cm<br>Ground Plane|Ground Plane<br>92.0|-0.36|6.16||||
|||7x7cm Ground<br>Plane|88.8|-0.52|5.69||||
|**SIRIUS**|2320-2332.5|100x100cm<br>Ground Plane|87.4|-0.59|5.11||||
|||50x50cm<br>Ground Plane|91.0|-0.41|5.92||||
|||30x30cm<br>Ground Plane|85.4|-0.69|5.48||||
|||15x15cm<br>Ground Plane|Ground Plane<br>87.9|-0.56|5.93||||
|||7x7cm Ground<br>Plane|87.8|-0.57|5.53||||



## **Mechanical** 

||**Mechanical**|
|---|---|
|**Dimensions**|25mm x 25mm x 4mm|
|**Weight**|10g|
|**Material**|Ceramic|
|**Pin Diameter**|0.9±0.2mm|
|**Pin Length**|2.4±0.3mm|



||**Environmental**|**Environmental**|
|---|---|---|
|**Operation Temperature**||-40°C to 105°C|
|**Storage Temperature**||-40°C to 105°C|
|**Humidity**||Non-condensing 65°C 95% RH|



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## **XM Gain Requirements (Satellite) - Ground Plane (2338.75MHz)** 

|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2338.75MHz)**|
|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||
|||||||**Measured Average Gain (dBic)**||||||
|||||||||||||
|**Elevation**|**XM Sirius**|**7x7cm**||**15x15cm**||**30x30cm**||**50x50cm**||**100x100cm**||
|**Angle(degrees)**|**Limits (dBic)**|**Ground**||**Ground**||**Ground**||**Ground**||**Ground**||
|||Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|
|||||||||||||
|**20 ≤ Ф ≤ 25**|0.5|0.1|0.2|0.2|-0.3|0.2|0.4|0.7|1.5|1.7|1.7|
|||||||||||||
|**25 ≤ Ф ≤ 30**|1|0.8|0.9|1.2|0.6|1.3|1.5|2.3|3.0|2.1|1.7|
|||||||||||||
|||||||||||||
|**30 ≤ Ф ≤ 50**|2|3.0|3.0|3.9|3.0|2.7|3.5|3.4|4.0|3.2|3.0|
|||||||||||||
|||||||||||||
|**50 ≤ Ф ≤ 70**|4|4.7|4.8|5.3|5.0|2.9|3.8|3.7|3.8|4.2|4.1|
|||||||||||||
|||||||||||||
|**70 ≤ Ф ≤ 90**|2|5.3|5.3|5.8|5.8|4.6|4.6|3.7|4.2|4.9|4.9|
|||||||||||||



## **XM Gain Requirements (Satellite) - Ground Plane (2326.25MHz)** 

|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|**XM Gain Requirements(Satellite) - Ground Plane(2326.25MHz)**|
|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||
|||||||**Measured Average Gain (dBic)**||||||
|||||||||||||
|**Elevation**|**XM Sirius**|**7x7cm**||**15x15cm**||**30x30cm**||**50x50cm**||**100x100cm**||
|**Angle(degrees)**|**Limits (dBic)**|**Ground**||**Ground**||**Ground**||**Ground**||**Ground**||
|||Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|Phi 0|Phi 90|
|**20 ≤ Ф ≤ 25**|0.5|0.0|0.7|0.0|0.9|0.1|1.0|0.8|2.0|1.9|1.3|
|||||||||||||
|**25 ≤ Ф ≤ 30**|1|0.9|1.4|1.0|1.8|1.3|2.0|2.5|3.4|2.2|1.5|
|||||||||||||
|**30 ≤ Ф ≤ 50**|2|3.1|3.3|3.6|4.1|3.1|3.6|4.1|4.3|3.3|3.0|
|||||||||||||
|**50 ≤ Ф ≤ 70**|4|4.8|5.0|5.5|5.6|3.7|3.7|4.3|4.5|4.3|4.3|
|||||||||||||
|||||||||||||
|**70 ≤ Ф ≤ 90**|2|5.5|5.5|6.1|6.1|4.6|4.6|4.4|4.6|4.6|4.7|
|||||||||||||



## **XM Gain Requirements (Terrestrial)- Ground Plane Antenna Mean Passive VP Gain Over Solid Angle (dBi)** 

|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna Mean Passive VP Gain Over Solid Angle(dBi)**|
|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||
|||||**Measured Average Gain (dBic)**||||||||
|||||||||||||
||**Elevation Angle**|**7x7cm**||**15x15cm**||**30x30cm**||**50x50cm**||**100x100cm**||
|**AUT Location**|<br>**(degrees)**|**Ground**||**Ground**||**Ground**||**Ground**||**Ground**||
|||**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|
|||**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|
|**Passive Ground**||||||||||||
||0 ≤ Ф ≤ 10|3.8|3.5|3.8|4.7|2.3|3.3|2.3|3.3|2.8|3.1|
|**Plane**||||||||||||
|||||||||||||



## **XM Gain Requirements (Terrestrial)- Ground Plane Antenna P/P Gain variation(dB)** 

|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|**XM Gain Requirements (Terrestrial)- Ground Plane**<br>**Antenna P/P Gain variation(dB)**|
|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||
|||||**Measured Average Gain (dBic)**||||||||
|||||||||||||
||**Elevation Angle**|**7x7cm**||**15x15cm**||**30x30cm**||**50x50cm**||**100x100cm**||
|**AUT Location**|<br>**(degrees)**|**Ground**||**Ground**||**Ground**||**Ground**||**Ground**||
|||**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|**2326.25**|**2338.75**|
|||**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|**MHz**|
|**Passive Ground**||||||||||||
||Ф ≤ 5|0.05|0.05|0.05|0.08|0.22|0.26|0.14|0.09|0.17|0.25|
|**Plane**||||||||||||
|||||||||||||



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The following is an example on how to integrate the SXP.25.4.A.02 into a design. The SXP.25.4.A.02 has one pin which is used for the RF Feed. Taoglas recommends using a minimum of 70x70mm ground plane to ensure optimal performance. 

Top view of an example 70x70mm PCB Reference Design. 

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## **4.1** Schematic Symbol and Pin Definitions ay 

Top view of an example 70x70mm PCB Reference Design. 

The circuit symbol for a SXP.25.4.A.02 is shown below. The antenna has 1 pin as indicated below. 

## TAOGLAS_SXP.25.4.A.02 

ANT1 

- Pin Description 

- ~~i~~ 1 RF Feed 

Above is a schematic symbol of the SXP.25.4.A.02 and a table of the pin definitions. 

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## **4.2** Antenna Footprint 2 

**==> picture [411 x 217] intentionally omitted <==**

**----- Start of picture text -----**<br>
BOTTOM<br>TOP<br>Pin  Description<br>[LE<br>1  RF Feed<br>**----- End of picture text -----**<br>


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## **4.3** Copper Clearance = 

The footprint and clearance on the PCB must comply with the antenna’s specification. The PCB layout shown in the diagrams below demonstrates the SXP.25.4.A.02 clearance area for Pin 1 (RF Feed Pad). The bottom copper keep out area only applies to the bottom layer and the top copper keep out area applies to all other layers. 

There should be a Ø3mm copper clearance around the antenna pins on the top side of the PCB with a Ø3.5mm copper clearance around the antenna pins on the bottom side. 

TOP SIDE 

BOTTOM SIDE 

2D Images of Copper Clearances for the SXP.25.4.A.02 

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## Antenna Integration 

The SXP.25.4.A.02 should be placed in the centre of the PCB to take advantage of the ground plane. The RF traces must maintain a 50 Ohm transmission line. Ground vias should be placed around the copper clearance area and the transmission line. Note that depending on the design application, tuning may be required for optimal performance. This may be achieved using a ‘pi’ matching network or custom tuning of the patch antenna. 

Bottom view of the PCB Reference Design, showing transmission lines and integration notes. 

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## Final Integration 

The bottom side image shown below highlights the antenna transmission line. Taoglas recommends using a minimum of 70x70mm ground plane to ensure optimal performance. 

Top Side (70x70mm example PCB Reference Design) 

Bottom Side 

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## Return Loss 

## VSWR 

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## Efficiency 

## Average Gain 

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## Peak Gain 

## Axial Ratio 

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## AR vs Angle for Phi=0 (Satellite) 

**==> picture [287 x 282] intentionally omitted <==**

**----- Start of picture text -----**<br>
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## AR vs Angle for Phi=0 (Terrestrial) 

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## AR vs Angle for Phi=90 (Satellite) 

**==> picture [271 x 225] intentionally omitted <==**

**----- Start of picture text -----**<br>
°° TONLLL<br>ig A<br>PYAS| 0<br>16 UM<br>ia IMM [AOU] TAA Tt<br>@ > PYMRR TY)YAAN<br>Ss WME UT AN TT [PN]<br>Sig WW WIN TN |<br><M AT TA |NE<br>Sg IMA | WW tt AA<br><= WE A a<br>6 MIN TAAL Tt ea<br>WY NAW Neen | ACA TAT<br>a WIA ENYA TPP<br>00 AZ Se NER eee ell |<br>> NSBRBEA |EREENANARI 4)*. vySee.| AAT<br>o LLL ttt ti ty | MV INTTe<br>-180 -150 -120 -90 -60 -30 0) 30 60 90 120 150<br>Theta (°)<br>**----- End of picture text -----**<br>


## AR vs Angle for Phi=90 (Terrestrial) 

**==> picture [262 x 13] intentionally omitted <==**

**----- Start of picture text -----**<br>
*° TTLL<br>**----- End of picture text -----**<br>


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## AR vs Angle for Teata=0 (Satellite) 

**==> picture [266 x 201] intentionally omitted <==**

**----- Start of picture text -----**<br>
°° TOLL LLL<br>iw tA A Pe |<br>LT VAIN A PAA A TA OA<br>16 (A-A YN AVR Ne TN IZ AY<br>Yi Why NL | PAN AT TA NI TU<br>wu iNAPNAANUAT ANALY et<br>@y WidBGWN Se PN 2TAi)NALNP ee<br>Oe ReLeINLAY<br>Sig i<br>a WAI AT TT Ye<br>Sell TM NAL Ae taEM<br>ee lt ivy (Ft TAT FT] ALT eT TT<br>ee eee eee ee eee<br>6 MALT TAA | er ONY<br>PNET AT Peet IN MA Te<br>attAlLi IVa i ti tt NY TT<br>PT IN TT IAT A A<br>>LtLtT ALi AT Tt tt tt PINE 7<br>Pi TIN ATT PE<br>oLtti Mit TT TT Ete tet et et te<br>**----- End of picture text -----**<br>


## AR vs Angle for Theta=90 (Terrestrial) 

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## Test Setup 

**==> picture [471 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
7x7cm Ground Plane  15x15cm Ground Plane  30x30cm Ground Plane<br>**----- End of picture text -----**<br>


**==> picture [118 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
100x100cm Ground Plane<br>**----- End of picture text -----**<br>


**==> picture [107 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
50x50cm Ground Plane<br>**----- End of picture text -----**<br>


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## 100x100cm Ground Plane Patterns at 2326 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 50x50cm Ground Plane Patterns at 2326 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 30x30cm Ground Plane Patterns at 2326 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 15x15cm Ground Plane Patterns at 2326 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 7x7cm Ground Plane Patterns at 2326 MHz 

**==> picture [397 x 9] intentionally omitted <==**

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


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## 100x100cm Ground Plane Patterns at 2339 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 50x50cm Ground Plane Patterns at 2339 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 30x30cm Ground Plane Patterns at 2339 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 15x15cm Ground Plane Patterns at 2339 MHz 

## XZ Plane 

## YZ Plane 

**==> picture [44 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
XY Plane<br>**----- End of picture text -----**<br>


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## 7x7cm Ground Plane Patterns at 2339 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 100x100cm Ground Plane Patterns at 2332 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 50x50cm Ground Plane Patterns at 2332 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 30x30cm Ground Plane Patterns at 2332 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 15x15cm Ground Plane Patterns at 2332 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## 7x7cm Ground Plane Patterns at 2332 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## Changelog for the datasheet 

## **SPE-25-8-109 – SXP.25.4.A.02** 

## **Revision: B (Current Version)** 

Date: 2026-04-07 Notes: Updated performance table. Author: Paul Liu 

**Previous Revisions** 

## **Revision: A** 

Date: 2025-04-02 Notes: Initial Release 

Author: Gary West 

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SPE-25-8-109-B
Updated at June 9, 2026
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