10PCS Cdsenet TX2400-PCB-4808 2.4GHz PCB-Embedded Antenna | 2.5 dBi Gain |IPEX-1

Rigid PCB Construction ¡ª 48 ¡Á 8 mm Compact Form Factor

The TX2400-PCB-4808 uses a rigid PCB substrate that maintains dimensional stability under mechanical stress and thermal cycling. At 48 ¡Á 8 mm, it fits within the clearance zones of standard IoT module PCBs without requiring external mounting hardware. The rigid structure eliminates the signal variability associated with flexible antenna bending ¡ª a critical advantage in production-line assembly environments.

IPEX-I (U.FL) Connector ¡ª Low-Loss Board-Level Integration

The IPEX-I (U.FL) connector is the industry-standard interface for internal antenna connections in compact wireless modules. It provides a secure snap-lock mating with typical insertion loss below 0.3 dB at 2.4 GHz, preserving the antenna's measured 2.5 dBi gain at the module RF port. Compatible with ESP32, nRF52, MT7628, and most 2.4 GHz SoC reference designs that expose a U.FL antenna port.

RF performance verified using a vector network analyzer across the full 2400¨C2500 MHz operating band. VSWR measured ¡Ü1.5 at all points within the band, confirming efficient power transfer and minimal reflected energy at the antenna feed point. Peak gain of 2.5 dBi measured in a calibrated anechoic environment.

Test instrumentation: Agilent E5071C ENA Series Network Analyzer (300 kHz ¨C 8.5 GHz) | Calibration standard: SOLT | Reference plane: IPEX-I connector port

Q: Is the TX2400-PCB-4808 compatible with ESP32, nRF52, and other 2.4 GHz SoC modules?

A: Yes. The TX2400-PCB-4808 uses a standard IPEX-I (U.FL) connector, which is the default antenna interface on most 2.4 GHz SoC modules including ESP32, ESP8266, nRF52840, MT7628, and RTL8720. It operates across the full 2400¨C2500 MHz ISM band with VSWR ¡Ü1.5, making it compatible with WiFi 802.11b/g/n, Bluetooth 5.x, ZigBee 3.0, and Thread protocols sharing this band.

Q: How do I mount the TX2400-PCB-4808 inside a device enclosure?

A: The rigid PCB substrate can be secured using double-sided adhesive tape, PCB standoffs, or a custom bracket. Position the antenna parallel to the device PCB with a minimum clearance of 3¨C5 mm from metal surfaces and ground planes to avoid detuning. Route the U.FL cable with a bend radius ¡Ý 3 mm. Avoid placing the antenna directly behind metallic battery packs or shielding cans, as this will increase VSWR and reduce effective gain.

Q: What is the operating temperature range and environmental durability of this antenna?

A: The TX2400-PCB-4808 is rated for an operating temperature range of ?40 ¡ãC to +85 ¡ãC, covering standard industrial temperature grades. The PCB substrate is RoHS compliant and resistant to typical indoor environmental conditions. For outdoor or high-humidity deployments, the antenna should be enclosed within a weatherproof housing rated IP54 or higher, as the bare PCB is not inherently sealed against moisture ingress.

Q: How does a 2.5 dBi PCB antenna compare to a 5 dBi external antenna for IoT applications?

A: A 2.5 dBi omnidirectional PCB antenna provides balanced 360¡ã coverage suitable for most indoor IoT deployments where the device orientation is variable or unknown. A 5 dBi antenna achieves higher gain by compressing the radiation pattern toward the horizon ¡ª beneficial for fixed point-to-point links but less effective for multi-device mesh networks. For smart home gateways, ZigBee coordinators, and mobile IoT nodes, 2.5 dBi omnidirectional coverage typically outperforms higher-gain directional alternatives in real-world multipath environments.