AMCA31-2R450G-S1F-T3-Q

## **Automotive-Grade 2.4GHz Chip Antenna AMCA31-2R450G-S1F-T3-Q** Request Samples —— 

**3.2 x 1.6 x 1.2 mm** Request Samples Check Inventory **RoHS/RoHS II Compliant MSL Level = 1** 

## **Features** 

## **Applications** 

- Automotive Qualification (AEC-Q200) 

- PPAP Ready and Supported 

- TS16949 Certified Production Lines 

- Miniaturized in size: 3.2 x 1.6 x 1.2 mm 

- Low return loss of: ≤ -12.5 dB 

- Peak Gain: 2.3 dBi 

- Average Total Efficiency: -1.4 dB (72%) 

   - Bluetooth[®] / ZigBee[®] / Thread/ Matter/Wi-Fi[®] 

   - Automotive Keyless Entry 

   - In-vehicle Entertainment Systems 

   - Tire Pressure Monitoring (TPMS) 

   - Cabin Environment Control 

   - Advanced Driver Assistance Systems (ADAS) 

   - Wireless Remote Control 

- Surface Mount (SMD) 

- Integration: PCB Corner Mounting 

## **Product Image** 

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5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS **REVISION IR: 12-18-24** ISO9001-2015 CERTIFIED 

## **Automotive-Grade 2.4GHz Chip Antenna** 

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|---|---|---|
|AMCA31-2R450G-S1F-T3-Q|
|Request Samples|Check Inventory|
|MSL Level = 1|
|So|:|
|Electrical Specification|
|Parameter|Specification|Unit|
|Operating Frequency|2400 - 2500|MHz|
|Return Loss|≤ -12.5|dB|
|VSWR|≤ 1.6|:1|
|Polarization|Linear|-|
|Peak Gain|2.3|dBi|
|Minimum Total Efficiency|-1.8 (66)|dB (%)|
|Average Total Efficiency|-1.4 (72)|dB (%)|
|Maximum Total Efficiency|-1.2 (76)|dB (%)|
|Impedance|50|Ω|
|Radiation Pattern|Omni-directional|-|
|Input Power|< 3|W|

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**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

_Note: All measurements were performed using the evaluation board in a free-space environment. Actual performance may vary depending on factors such as the ground plane, specific application, and surrounding environment._ 

## **Mechanical Specification** 

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|---|---|
|Parameter|Specification|
|Antenna Dimension|3.2 x 1.6 x 1.2 mm|
|Evaluation board Dimension|44 x 20 mm|
|Recommended Ground Clearance for Antenna|6.5 x 6.5 mm|
|Mounting Type|Surface Mount|
|Mounting Location|PCB Corner Mounting|
|Material(s)|Ceramic|

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## **Environmental Specification** 

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|---|---|
|Parameter|Specification|
|Operating and Storage Temperature|
|-40⁰C ~ +125⁰C|
|(individual chip without packing)|
|Packaging Storage Temperature|-10⁰C ~ +40⁰C|
|Packaging Storage Relative Humidity|70% (Max.)|

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## **Ordering Information** 

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|---|---|---|---|
|Part Number|Description|
|AMCA31-2R450G-S1F-Q|Antenna|Component|on Cut Tape|
|AMCA31-2R450G-S1F-T3-Q|Antenna Component on Tape & Reel|
|AMCA31-2R450G-S1F-T3-Q-EVB|Evaluation Kit|

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5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS ISO9001-2015 CERTIFIED 

**Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** BC 

Request Samples Check Inventory 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

## **Product Dimensions and Terminal Configuration** 

_Unit: mm_ 

**REVISION IR: 12-18-24** 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: 

ABRACON IS ISO9001-2015 CERTIFIED 

www.abracon.com 

## **Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** Request Samples Check Inventory a 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

## **Recommended PCB layout** 

If there are several layers in the PCB, there is an advantage to add vias for smooth interconnection of the ground areas to avoid splits in the ground plane. It is also important that the ground clearance is respected through all layers of the PCB. It is recommended to implement a matching network to optimize the antenna impedance in your application. 

The transmission line should be kept as short as possible and be designed to have a characteristic impedance of 50Ω. 

Detailed view of antenna pads and copper clearance: 

_Unit: mm_ 

## **Transmission Line** 

The transmission line should be kept as short as possible and be designed to have a characteristic impedance of 50Ω. Abracon recommends using a Co-Planar Waveguide with Ground (CPWG), which dimensions can be derived by any trusted calculator, using the correct input for PCB materials and layer stack-up. 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** For terms and conditions of sales, please visit: 

ABRACON IS ISO9001-2015 CERTIFIED 

www.abracon.com 

**Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** a 

**3.2 x 1.6 x 1.2 mm** Request Samples Check Inventory **RoHS/RoHS II Compliant MSL Level = 1** 

## **Measurement Setup** 

The antenna measurements were all done in free space, with the chip antenna implemented on its evaluation board (AMCA31-2R450G-S1F-T3-Q-EVB) that has a PCB size of 44 x 20 mm: 

## **Reflection Characteristics – Return Loss** 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS ISO9001-2015 CERTIFIED 

## **Automotive-Grade 2.4GHz Chip Antenna** 

**AMCA31-2R450G-S1F-T3-Q** 

Request Samples 

Check Inventory 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

## **Radiation Characteristics – Total Efficiency (dB)** 

## **Radiation Characteristics – Total Efficiency (%)** 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: 

ABRACON IS **REVISION IR: 12-18-24** ISO9001-2015 CERTIFIED 

www.abracon.com 

## **Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** ee **Radiation Characteristics – Maximum Gain** 

Request Samples 

Check Inventory 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

## **Radiation Characteristics – 3D Pattern @ 2450 MHz** 

_Unit: dBi_ 

## AA ABRACON 

5101 Hidden Creek Ln Spicewood TX 78669 Phone: 512-371-6159 | Fax: 512-351-8858 For terms and conditions of sales, please visit: www.abracon.com 

ABRACON IS **REVISION IR: 12-18-24** ISO9001-2015 CERTIFIED ~~—~~ 

**Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** 

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_Unit: dBi_ 5101 Hidden Creek Ln Spicewood TX 78669 ABRACON IS Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** ISO9001-2015 For terms and conditions of sales, please visit: CERTIFIED www.abracon.com 

## **Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** ee **Evaluation Board Outline & Matching Circuit** 

Request Samples Check Inventory 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

The evaluation board (AMCA31-2R450G-S1F-T3-Q-EVB) is developed to simplify antenna testing and evaluation. It has an arbitrary size of 44 x 20 mm and includes an SMA connector. The purpose is to give a reference design for an optimal antenna implementation. The evaluation board can also be used to test other implementations by cutting and soldering the PCB into any device. 

## _Evaluation board outline_ 

The evaluation board has a matching circuit implemented next to the antenna. This is aimed to enable optimization possibilities for the user. The component positions are sized for 0402 (1005 metric) SMD components. 

The antenna requires a matching circuit to fine-tune the resonant frequency and achieve optimal balance. The evaluation board is pre-tuned for optimal performance in the 2.4–2.5 GHz range using the components listed below (equivalents may be used): 

X1 = 9.7 nH (Murata LQW15AN9N7G00D) X2 = 8.3 nH (Murata LQW15AN8N3C10D) X3 = not mounted 

However, it is common that the resonant frequency will shift during implementation in an arbitrary device. Therefore, this matching may be changed with other values/components/brands for compensation of such effects. This is further described in the General Implementation Guidelines section below. 

5101 Hidden Creek Ln Spicewood TX 78669 ABRACON IS Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** ISO9001-2015 For terms and conditions of sales, please visit: CERTIFIED www.abracon.com _—_ 

**Automotive-Grade 2.4GHz Chip Antenna** 

## **AMCA31-2R450G-S1F-T3-Q** ee **General Implementation Guidelines** 

**3.2 x 1.6 x 1.2 mm** Request Samples Check Inventory **RoHS/RoHS II Compliant MSL Level = 1** 

The antenna can be positioned in different ways, although there are some positions which are more beneficial. The below illustration shows a typical PCB with examples on different antenna positions: 

The rectangular copper cutout in the footprint must extend through all layers of the PCB stack-up, ensuring there is **no copper on any layer in this area** . Additionally, a robust via structure around the cutout and along the edge of the ground plane is highly recommended for optimal performance. 

It is important to note that plastic and metal parts in close proximity to antennas may significantly affect antenna tuning and performance. For instance, a plastic housing above the antenna often causes the resonant frequency to shift downward. Since such effects are challenging to predict without detailed design information, it is recommended to measure the antenna performance in the final device after implementation. To compensate for potential frequency shifts, implementing a matching network on the antenna feed is advisable. 

Another general consideration for surface-mounted antennas relates to PCB population. Electrical components placed near the antenna may impact its tuning and radiation performance. To mitigate this, components in the surrounding area should be positioned below a topographical slope. This slope should begin at the PCB level near the antenna's designated keep-out zone and gradually increase in height as distance from the antenna grows. 

For technical assistance, please contact Abracon online support through our online support platform. 

5101 Hidden Creek Ln Spicewood TX 78669 ABRACON IS Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** ISO9001-2015 For terms and conditions of sales, please visit: CERTIFIED www.abracon.com | | 

## **Automotive-Grade 2.4GHz Chip Antenna** 

**AMCA31-2R450G-S1F-T3-Q 3.2 x 1.6 x 1.2 mm** Request Samples Check Inventory **RoHS/RoHS II Compliant MSL Level = 1** 

## **Reflow Profile [JEDEC J-STD-020]** 

Solder paste: Sn/3.0Ag/0.5Cu 

|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|Solder paste: Sn/3.0Ag/0.5Cu|
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|**Table 1**<br>**SnPb Eutectic Process**<br>**Classification Temperatures(Tc)**<br>~~=~~<br>UserT,.<br>$T<br>pric<br>.<br>~~[Lr~~|||||||||||||
|Supplierto||User)||**Package**<br>**Volume mm3**||||**Volume mm3**|||||
|||||**Thickness**<br>**<350**||||≧**350**|**350**||||
|||||<2.5mm<br>235℃||||220℃|||||
|||||≧2.5mm<br>220℃||||220℃|||||
|Tp<br>! femmes) <br>Max.RampDownRate=6°C/s<br>o<br>+<br>TL<br>=||BI<br>F<—Te<br> “CS<br>LT<br>_———)|Te -5°C<br>-|**Table 2**<br>**Pb-Free Process**|||||||||
|©<br>=||||**Classification Temperatures**||**eratures(Tc)**|||||||
|o<br>a.||||**Package**<br>**Volume mm3**||**Volume mm3**<br>**Volume mm3**|||||||
|£||||**Thickness**<br>**<350**||**350-2000**<br>**>2000**|||||||
|o|||||||||||||
|i||||<1.6mm<br>260℃||260℃|||260℃||||
|||||1.6mm - 2.5mm<br>260℃||250℃|||245℃||||
|25 }—Time25°C toPeak|Time —>|||>2.5mm<br>250℃||245℃|||245℃||||
|**Profile Feature**||||**Sn-Pb Eutectic**<br>**Assembly**||**Pb-Free Assembly**|||||||
|Preheat / soak|||||||||||||
|Temperature minimum (Tsmin)||||100℃||||150℃|||||
|Temperature maximum (Tsmax)||||150℃||||200℃|||||
|Time (Tsminto Tsmax) (ts)||||60 – 120 sec.|||60 – 90 sec.||60 – 90 sec.||||
|Average ramp-up rate (Tsmaxto Tp)||||3℃/sec. max|||3℃/sec. max||||||
|Liquidous temperature (TL)||||183℃||||217℃|||||
|Time at Liquidous (TL)||||60 – 150 sec.|||60 – 150 sec.|60 – 150 sec.|||||
|Peak package body temperature (Tp)*||||**See Table 1**|||**See Table 2**||||||
|Time (Tp)**within 5℃ of the specified classification temperature (Tc)||||20 sec.||||10 sec.|||||
|Ramp-down rate (Tpto Tsmax)||||6℃/sec. max|||6℃/sec. max||||||
|Time 25℃topeak temperature||||6 min. max|||8 min. max|8 min. max|8 min. max||||
|Reflow cycles||||2 max||||2 max|||||



*Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum. 

**Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. 

5101 Hidden Creek Ln Spicewood TX 78669 ABRACON IS Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** ISO9001-2015 For terms and conditions of sales, please visit: CERTIFIED www.abracon.com 

## **Automotive-Grade 2.4GHz Chip Antenna** 

**AMCA31-2R450G-S1F-T3-Q** ee 

Request Samples Check Inventory 

**3.2 x 1.6 x 1.2 mm RoHS/RoHS II Compliant MSL Level = 1** 

## **Packaging** 

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Tape & Reel dimensions:<br>**----- End of picture text -----**<br>


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Carrier Tape Specifications (mm)<br>Do  K0 E1 P0 T  F  P1 W  A0 B0 Reel Qty<br>1.50 + 0.1  1.5 ± 0.1  1.75 ± 0.1  4.0 ± 0.1  0.22± 0.05  3.5 ± 0.15  4.0 ± 0.1  8.0 ± 0.10  1.8± 0.1  3.5± 0.1  3,000<br>Reel Specifications (mm)<br>A  W1 N  B  C<br>178 ± 2.0 8.4 +1.5 58 ± 2.0 2.45 ± 0.2  13.5 ± 0.2<br>**----- End of picture text -----**<br>


ATTENTION: Abracon LLC’s products are Commercial-Off-The-Shelf (‘COTS’), which are designed, intended, and validated for use in commercial, industrial, and automotive applications. The customer is responsible for testing and verifying the performance of an Abracon solution to meet their system-level requirements. 

5101 Hidden Creek Ln Spicewood TX 78669 ABRACON IS Phone: 512-371-6159 | Fax: 512-351-8858 **REVISION IR: 12-18-24** ISO9001-2015 For terms and conditions of sales, please visit: CERTIFIED www.abracon.com ~~|~~