Feature
- 2.4 GHz external antenna kit: A white rod antenna and SMA-to-I-PEX adapter cable for compatible Seeed Studio XIAO projects. Covers 2400–2500 MHz only; not for 5 GHz Wi-Fi.
- RF characteristics: Up to 2.81 dBi peak gain, 50 Ω nominal impedance, 3.0:1 maximum VSWR and an omnidirectional azimuth pattern. Gain and coverage depend on the installation; omnidirectional does not mean equal radiation in every direction.
- Mechanical integration: Ø13 × 134 mm antenna housing, 12 g antenna weight and a SMA-Female connector as specified in the datasheet. Connect to the board through the included SMA-to-I-PEX cable; adapter cable length is TBD.
- Listed XIAO compatibility: XIAO ESP32-C3, ESP32-C6, ESP32-S3 / S3 Sense and ESP32-S3 Plus for 2.4 GHz operation. XIAO ESP32-C5 is limited to 2.4 GHz with this antenna. Always match the board connector.
- Material compliance: REACH/RoHS compliant, as specified in the linked datasheet.
Installation and Placement
- Disconnect power. Connect the SMA end of the included adapter to the rod antenna without twisting the coaxial cable.
- Align the I-PEX plug with the matching board socket and press gently straight down. Do not force an angled or mismatched connector; leave cable slack for strain relief.
- Position the antenna away from large metal surfaces where practical and test signal strength in the final enclosure. Antenna replacement does not add frequency bands to a board.
Recommended uses: 2.4 GHz sensor nodes, smart-home prototypes and enclosure-mounted Wi-Fi/Bluetooth projects. Communication distance depends on the board, transmit power, orientation, obstacles and interference; no fixed range is guaranteed.
Choose a board: XIAO ESP32-C3; XIAO ESP32-C6; XIAO ESP32-S3 / S3 Sense; XIAO ESP32-S3 Plus; XIAO ESP32-C5 — 2.4 GHz only with this antenna. Development boards are sold separately from this kit.
Rod Antenna Datasheet and Housing Drawing · Seeed Antenna Selection Guide — 2.4/5 GHz section
Specification
Parameter | Detail |
Frequency Bands | 2400-2500MHz |
VSWR (Max) | 3.0:1 |
Peak Gain, dBi (Typ) | Up to 2.81 dBi |
Nominal Impedance | 50 Ω |
Max Power (ambient temp of 25°C) | 10 Watts |
Azimuth Beam Width (deg) | Omnidirectional |
Polarization | Linear, Omnidirectional |
Radome | PC, White |
Storage Temperature Range | -40° C to +85° C |
Operational Temperature Range | -30° C to +80° C |
Material Substance Compliance | REACH/RoHS Compliance |
| Antenna Housing Dimensions (Diameter × Length) | Ø13 ± 0.5 × 134 ± 5 mm |
| Antenna Weight | 12 g (antenna only, per datasheet) |
| Antenna Connector | SMA-Female (as specified in the antenna datasheet) |
| Board Connection | Included SMA-to-I-PEX antenna cable; match the board socket before installation |
| Adapter Cable Length | TBD |
| Operating Band Limitation | 2.4 GHz only; this antenna does not support 5 GHz Wi-Fi, including when connected to XIAO ESP32-C5 |
Antenna Selection Guide
Match the operating band and connector first, then check radiator size and cable length for your enclosure. Peak gain values are not constant across the operating band.
| Parameter | FPC Antenna A-02 | FPC Antenna A-01 | 2.4 GHz Rod Antenna |
|---|---|---|---|
| Operating Bands | 2400–2500 MHz | 2400–2500 MHz; 5100–5900 MHz | 2400–2500 MHz only; not for 5 GHz Wi-Fi |
| Connector | I-PEX 1 (first-generation connector) | IPEX1 | SMA-Female antenna; included SMA-to-I-PEX adapter to board |
| Antenna Dimensions | 37.4 ± 0.2 × 17.5 ± 0.2 mm (FPC outline) | 40 × 20 × 0.2 mm (FPC radiator) | Ø13 ± 0.5 × 134 ± 5 mm (housing) |
| Cable Length | 65 ± 2 mm; Ø1.13 ± 0.1 mm coaxial cable | 80 mm | TBD — included SMA-to-I-PEX adapter cable |
| Listed XIAO Compatibility | XIAO ESP32-S3 / S3 Sense: 2.4 GHz | XIAO ESP32-C3: 2.4 GHz; XIAO ESP32-C5: 2.4/5 GHz; XIAO ESP32-S3 Plus: 2.4 GHz | XIAO ESP32-C3, C6 and ESP32-S3 Plus: 2.4 GHz; XIAO ESP32-C5: 2.4 GHz only with this rod antenna |
| Peak Gain | 1.16 dBi at 2500 MHz (highest measured) | 2.16 dBi at 2450 MHz; 2.80 dBi at 5420 MHz | 2.81 dBi |
| VSWR (Max) | 4.5:1 | 3:1 | 3.0:1 |
| Polarization | Linear | Linear | Linear; omnidirectional pattern |
Source documents: A-02 datasheet and drawing; A-01 datasheet and drawing; Rod antenna datasheet and housing drawing. The rod kit includes a SMA-to-I-PEX cable; its length is TBD because it is not specified in the published antenna datasheet.
What Determines Communication Distance?
Range depends on transmit power, receiver sensitivity, antenna placement, board design, obstacles and interference. Test the assembled system in its intended environment; this antenna does not guarantee a fixed distance or coverage in a particular room.
Hardware Overview
Application
- Industrial Sensor Networks
- Agricultural Telemetry Systems
- Drone Swarm Relays
- Embedded IoT Gateways
Certification
| HSCODE | 8517710000 |
| USHSCODE | 8517710000 |
| UPC | |
| EUHSCODE | 8517180000 |
| COO | CHINA |
Part List
| SMA-to-I-PEX antenna adapter cable (length: TBD) | ×1 |
| White 2.4 GHz rod antenna (up to 2.81 dBi, Ø13 × 134 mm) | ×1 |
2.4GHz Rod Antenna for Seeed Studio XIAO
A 2.4 GHz rod antenna kit for compatible Seeed Studio XIAO boards, including a white Ø13 × 134 mm antenna and a SMA-to-I-PEX adapter cable. Covers 2400–2500 MHz with up to 2.81 dBi peak gain. Suitable for external antenna placement and enclosure integration; not for 5 GHz Wi-Fi.
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