The 4dBi 4G LTE Flex PCB Antenna is a flat flexible printed circuit antenna built for 4G LTE (Long Term Evolution, a high-speed mobile data standard) network modules. Flex PCB means the antenna element is printed on a thin bendable substrate (a flexible plastic film) instead of a rigid board. The 4g lte pcb flex antenna 4dbi connects directly to your LTE module through a small U.FL or IPEX connector, allowing you to route the antenna away from the main PCB into the lid or corner of an enclosure.
The 4g PCB antenna operates at frequencies below 0.3 GHz and delivers a gain of 3 dBi. One non-obvious detail here — the gain figure on flex PCB antennas depends heavily on the ground plane size beneath them. A ground plane (the copper fill area on your PCB) smaller than recommended reduces effective gain noticeably. The honest limitation is bandwidth — below 0.3 GHz covers specific LTE sub-GHz bands only, so confirm your module’s exact band requirements before using. The voltage monitor rated at 24V suits deployment on 24V industrial power rails where standard 5V logic modules usually need a separate regulator.
The lte PCB antenna works with SIM7600, EC21, and similar 4G LTE modules that use U.FL antenna ports. Engineers building remote systems, fleet tracking systems, and IoT gateways use it regularly. To start, peel the adhesive backing from the antenna, stick it flat onto a non-metal surface, and click the connector onto your module’s antenna port. StemVolt offers fast and reliable delivery of this module across India with trusted service support.
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Features:
- 700-2700 MHz wideband FPC covers all Indian 4G LTE frequency bands
- 4dBi gain improves LTE signal over integrated chip antenna alternatives
- U.FL female snap connector fits SIM7600 EC21 and LTE module ports
- Flexible FPC body routes and adheres inside sealed product enclosures
- 50 ohm impedance matched for all standard LTE modem antenna inputs
Technical specifications:
| Specification | Details |
|---|---|
| Material | FPC (Flexible Printed Circuit Radiator) |
| Frequency Band | 2400MHz – 2700 MHz |
| Gain | 4 dBi |
| Impedance | 50 Ω |
| Network Type | 4G LTE |
| Connector | U.FL Female |
 Applications:
- 4G LTE Flex PCB Antenna used for SIM7600 embedded IoT node build
- College project uses 4g pcb antenna for 4G data uplink demo
- Industrial tracker uses 4g lte antenna for vehicle 4G cellular uplink
- Smart meter uses lte pcb antenna for 4G SCADA remote reporting
- Custom LTE board uses 4g flex antenna for compact enclosed deployment
Package includes:
- 1 x 4dBi 4G LTE Flex PCB Antenna














Vaibhav Totla –
Genuine quality product
Khushi Lahoti –
Damage proof packing
Bhumika Mantri –
Perfect for final year projects and embedded systems, offering compact design and easy integration with LTE-enabled devices
Gaurav Jajoo –
Highly recommended antenna
Roshan Mandowara –
4dBi 4G LTE Flex PCB Antenna provides reliable signal reception and stable connectivity for wireless communication and IoT applications
Divya Hada –
Same day dispatch