ABRACON PRO-OB-440

2.4 GHz - Wi-Fi/BT/BLE Metal Stamping Antenna

13.75 X 5.23 X 3.53 mm RoHS/RoHS II Compliant MSL Level 1

Compact Low-loss material High efficiency (η > 65%) High gain 4.9 dB SMD

Applications:

• 2.4 GHz - Wi-Fi/BT/BLE/ZigBee/ISM
• IoT, M2M
• Industrial IoT
• Consumer IoT
• Medical IoT
• Telemetry
• Wireless remote control
• Personal Area Network (PAN)
• Industrial/commercial equipment

Electrical Specifications:

• Operating frequency: 2400 - 2500 MHz
• Center frequency: 2450 MHz
• Return loss: -6.9 dB
• Polarization: Linear
• Peak gain: 4.9 dBi
• Efficiency: 65%
• Impedance: 50 Ohm

Note: All test measurements were performed on a 100X50 mm evaluation board (PRO-EB-450). Performance depends on ground plane dimensions, tuning components, and application environment.

Mechanical Specifications:

• Antenna dimensions: 13.75 X 5.23 X 3.53 mm
• Evaluation board dimensions: 100 X 50 mm
• Mounting type: Surface mount

Environmental Specifications:

• Operating temperature: -40℃ to +125℃
• Storage temperature: -40℃ to +125℃
• Maximum temperature: 400℃
• RoHS compliant: Yes
• Shelf life: 10 years (compliant with EU Directives 2011/65/EU and 2015/863)
• MSL: Level 1, unlimited
• Mechanical durability: Vibration resistance per IEC/EN 60068-2-6, Test Fc; Shock resistance per IEC/EN 60068-2-27, Test Ea

PCB Layout:

• The antenna is designed for optimal performance when mounted on a ground plane.
• No ground keepout area is required beneath the antenna.
• Add vias in multilayer PCBs to connect ground regions.
• Ensure ground clearance on all PCB layers around the NC pad and RF feed pad.
• Place the antenna along one side of the PCB ground plane with pin 1 as close to the layout corner as possible.
• Implement a π matching network to compensate for impedance mismatch in actual implementations.

Evaluation Board Profile and Matching Circuit:

• The evaluation board has a size of 100 X 50 mm and includes an SMA connector.
• A matching circuit is implemented adjacent to the antenna.
• Component values are set to C1 = 1.5 nH, C2 = 0.5 pF, C3 = N/A.
• Tuning can be adjusted to compensate for resonant frequency shifts in actual implementations.

General Implementation Guidelines:

• Align the antenna with the PCB edge whenever possible.
• Align pins 1 & 2 along the outer edge of the PCB, preferably near a corner.
• Small electrical components may be placed within the antenna keepout area.
• Distribute surrounding electrical components beneath the terrain slope starting from the antenna keepout area.
• Plastic and metal components near the antenna may affect antenna tuning and/or performance.
• Measure the antenna after implementation in the actual device.

• 2.4 GHz Wi-Fi/BT/BLE/ZigBee/ISM applications
• IoT, M2M
• Industrial IoT
• Consumer IoT
• Medical IoT
• Remote telemetry
• Wireless remote control
• Personal Area Network (PAN)
• Industrial/commercial equipment