PCS.27.A

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[Model Name] 

**Part No: PCS.27.A** 

**Description** 

Wi-Fi 2.4/5.8/7.125GHz FR4 PIFA SMD Antenna 

**Features:** 

Low-profile SMD Antenna WI-FI 2.4GHz/5.8/7.125 GHz Dims: 12.0mm * 5.0mm * 3.1mm RoHS & Reach Compliant 

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1. Introduction  3<br>2. Specification  4<br>3. Mechanical Drawing  5<br>4. Antenna Integration Guide  6<br>5. Packaging  14<br>6. Solder Reflow Profile  15<br>7. Antenna Characteristics  16<br>8. Radiation Patterns  20<br>Changelog  24<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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## Super Small, Antenna Designed for High-performance Wi-Fi 6/7 Applications 

The Taoglas PCS.27.A is an expertly designed Wi-Fi antenna for various Bluetooth and Wi-Fi applications. Engineered to cover 2.4, 5.8 and 7.125GHz bands, the antenna is suitable for Wi-Fi 6/7 applications allowing you to future proof your device design. The high-performance FR4 antenna, supplied on tape and reel, is designed to be mounted via SMD on a PCB. It is engineered to operate both with, and without copper clearance on all PCB layers, meaning it can be used on boards where space is at a premium. 

The PCS.27.A has a compact form factor of just 12.0 x 5.0 x 3.1mm and requires a small keep out area of allowing it to be used where other antennas cannot. Many competitor products require large keep out areas and several matching components on much larger ground planes to operate. 

Typical applications that the PCS.27.A is suitable for include: 

- Wearables and Handheld Wi-Fi devices 

- Smart Home and Office Automation 

- Entertainment Systems with 4K / 8K Streaming, VR and AR 

- Keyless entry systems and Access Control Systems 

- Smart Telemedicine and Healthcare 

- Industrial Automation and Predictive Maintenance Systems 

Taoglas high-performance FR4 antennas can be specifically tuned to customer-specific device environments, subject to NRE and MOQ. Contact your regional Taoglas customer support team to request these services or additional support to integrate and test this antenna’s performance in your device. 

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|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|**Wi-Fi Electrical**|
|---|---|---|---|---|---|---|---|---|
|**Band**|Frequency<br>(MHz)|Efficiency (%)|Average Gain<br>(dB)|Peak Gain (dBi)|Peak Gain (dBi)<br>Impedance|Polarization|Radiation<br>Pattern|Max. input<br>power|
|**Wi-Fi - 2GHz**|2400-2500|39.0|-4.09|1.19|50 Ω|Linear|Omni|2W|
|**Wi-Fi - 5GHz**|5150-5850|55.8|-2.54|3.53|||||
|**Wi-Fi - 6GHz**|5925-7125|48.8|-3.12|3.94|||||



||**Mechanical**||||
|---|---|---|---|---|
|**Dimensions**||12.0 x 5.0 x 3.1mm|12.0 x 5.0 x 3.1mm|12.0 x 5.0 x 3.1mm|
|**Weight**||||1g|
|**Material**||||FR4|
|**Mounting**||||SMT|



||**Environmental**||
|---|---|---|
|**Temperature Range**||-40°C ~ +85°C|
|**Moisture Sensitivity**||3|
|**RoHs & REACH Compliant**||Yes|



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The following is an example on how to integrate the PCS.27.A into a design. This antenna has 4 pins, where one pin is used for the RF Feed. Taoglas recommends using a minimum of 50x50mm ground plane (PCB) to ensure optimal performance. 

The antenna should be placed on the corner of the PCB to take advantage of the ground plane on the side of the antenna. 

Top view of PCB. 

Please find the Integration files in Altium, 2D formats and the 3D model for the PCS.27.A here: LINK GOES HERE 

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

Above is a 3D model of the PCS.27.A on a PCB. 

The circuit symbol for the PCS.27.A is shown below. The antenna has 4 pins as indicated below. 

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## Antenna Footprint 

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*Please note Top Solder Paste has the same dimensions as the Antenna Footprint 

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## Copper Clearance for PCS.27.A 

The footprint and clearance on the PCB must comply with the antenna’s specification. The PCB layout shown in the diagrams below demonstrates the GLA.01 clearance area. The copper keep out areas apply to different layers on the PCB. 

The top copper clearance area extends to 5mm in length and 11mm in width around the antenna and only applies to the top layer. The bottom copper clearance area extends to 5mm in length and 6mm in width around the antenna and applies to all other layers. The PCB edge clearance should be a minimum of 0.1mm, example below is 0.5mm. 

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## Copper Clearance Top Side 

Copper Clearance Bottom Side 

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## **4.4** Schematic Layout eas 

Matching components with the PCS.27.A are required for the antenna to have optimal performance in the spaces specified in the schematic below. Additional matching components may be necessary for your device, Taoglas recommends incorporating extra component footprints, forming a “pi” network, for the PCS.27.A. 

|Designator|Type|Value|Manufacturer|Manufacturer Part Number|
|---|---|---|---|---|
|L1|Inductor|1.2nH|TDK|MHQ1005P1N2BT000|



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## Antenna Integration 

The PCS.27.A should be placed mid-point on the long side of the PCB to take advantage of the ground plane extending from each side of the antenna. The RF trace must maintain a 50 Ohm transmission line. A “Pi” Matching Network is recommended for the RF transmission line, the values and components for the matching circuit will depend on the tuning needed. Ground vias should be placed around the transmission line and the copper clearance area. 

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## Final Integration 

The top side image shown below highlights the antenna transmission line. Taoglas recommends using a minimum of 50x50mm ground plane (PCB) to ensure optimal performance. 

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The PCS.27.A can be assembled by following the recommended soldering temperatures are as follows: 

*Temperatures listed within a tolerance of +/- 10º C 

Smaller components are typically mounted on the first pass, however, we do advise mounting the - when placing larger components on the board during subsequent reflows. 

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## Test Setup 

VNA Test Set-up on a 50x50mm Ground Plane 

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## Return Loss 

## VSWR 

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## Efficiency 

## Average Gain 

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## Peak Gain 

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## Test Setup 

Chamber Test Set-up on a 50x50mm Ground Plane 

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## PCS.27.A Patterns at 2450 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## PCS.27.A Patterns at 5500 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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## PCS.27.A Patterns at 6525 MHz 

## XZ Plane 

## YZ Plane 

## XY Plane 

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Changelog for the datasheet **SPE-24-8-125 – PCS.27.A Revision: A (Original First Release)** Date: 2024-06-07 Notes: Initial Release Author: Gary West 

## **Previous Revisions** 

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