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TXGN-PCB Series Internal 4G LTE/NB-IoT PCB & FPC Antennas
TXGN-PCB Series Internal 4G LTE/NB-IoT PCB & FPC Antennas
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SKU:txgn-pcb-d41
The Ebyte TXGN-PCB Series provides highly efficient, built-in omnidirectional antennas designed for embedded wireless communications. Covering the 824–960 MHz and 1710–2170 MHz frequency bands, these antennas are perfectly tuned for NB-IoT, GSM, 3G, and 4G LTE networks.
Available in both rigid PCB and flexible FPC (Flexible Printed Circuit) variants, the series offers extremely compact footprints (starting from just 35mm in length) while maintaining a stable gain of up to 3.0 dBi. Equipped with an industry-standard IPEX-I (U.FL) connector and a 50Ω impedance matching design, these antennas are the go-to solution for developers looking to integrate reliable cellular connectivity into tight product enclosures.
Series Specification Comparison
Select the optimal internal antenna variant based on your enclosure dimensions and material requirements:
| Model SKU | Gain | Dimensions (L x W) | Frequency Range | Material Type |
|---|---|---|---|---|
| TXGN-PCB-3508 | 3.0 dBi | 35mm x 8mm | 824-960 / 1710-2170 MHz | Rigid PCB |
| TXGN-PCB-4013 | 3.0 dBi | 40mm x 13mm | 824-960 / 1710-2170 MHz | Rigid PCB |
| TXGN-PCB-D41 | 3.0 dBi | 41mm x 8mm | 824-960 / 1710-2170 MHz | Rigid PCB |
| TXGN-PCB-6508 | 2.0 dBi | 66mm x 8mm | 824-960 / 1710-1990 MHz | Flexible PCB (FPC) |
*Note: All models feature an IPEX-Ⅰ connector, weight of approx. 1g, and a VSWR of ≤1.5.
Expert Selection Guide: Form Factor Matters
- For Standard Box Enclosures: Choose the rigid variants like TXGN-PCB-3508 or TXGN-PCB-D41. They can be easily slotted into plastic casing rails and offer excellent stability and 3.0dBi gain.
- For Curved or Ultra-Compact Casings: Opt for the TXGN-PCB-6508 (Flexible FPC). The flexible polymer base allows you to bend the antenna to fit the contours of wearable devices, smart collars, or cylindrical IoT sensors.
Key Technical Features
① Broad Cellular Network Support
Unlike single-band antennas, the dual-band resonant design guarantees backward compatibility. Whether your IoT node relies on cutting-edge low-power NB-IoT networks or falls back to standard 2G/GSM in remote areas, this antenna maintains steady transmission.
② Ultra-Low VSWR for Battery Efficiency
With a Standing Wave Ratio (SWR) of ≤1.5, the TXGN-PCB series minimizes reflected power. For battery-powered embedded devices, this means the cellular modem expends less energy transmitting data, significantly extending the lifespan of your IoT node.
Ideal Applications
📡 Smart Metering
Internal integration for NB-IoT water, gas, and electric meters requiring deep indoor signal penetration.
🚗 Vehicle Tracking
Compact OBD-II GPS/4G trackers and fleet management hardware hidden under vehicle dashboards.
⌚ Wearable Tech
Using the flexible 6508 FPC variant for smartwatches, pet trackers, and health monitoring devices.
💻 DIY Maker Projects
Perfect for open-source cellular gateways, Raspberry Pi 4G HATs, and Arduino telemetry builds.
Frequently Asked Questions
1. How do I connect this antenna to my Raspberry Pi 4G/LTE Cellular Base HAT?
Most popular 4G HATs for the Raspberry Pi (and Ebyte cellular modules) use a U.FL interface. The TXGN-PCB series comes standard with an IPEX-I connector, which is fully compatible with U.FL. Simply align the tiny gold connectors and press down gently until you feel a "snap" to secure the RF connection.
2. I am building an open-source NB-IoT tracker from a GitHub repository. Should I use the rigid PCB or the flexible FPC version?
It depends purely on your 3D-printed enclosure. If your enclosure has flat inner walls and dedicated mounting slots, use the rigid 3508 or D41 for maximum 3.0dBi gain. If your device is curved, extremely thin, or oddly shaped, the TXGN-PCB-6508 flexible antenna is the best choice, as it can be peeled and stuck directly to the inner curved plastic.
3. Can I stick the TXGN-PCB antenna directly onto my custom Ebyte PCB motherboard?
No, you must avoid mounting any internal antenna directly over ground planes, metallic components, or the battery. To maintain the ≤1.5 VSWR and omnidirectional radiation pattern, mount the antenna on the inside of the plastic outer casing, keeping a clear "keep-out" zone between the antenna and the motherboard.