4dBi 4G LTE Flex PCB Antenna

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.

Related Product:

• Check out the GSM 2dBi Rubber Duck Antenna right angle

Features:

• Flex PCB construction at 3 dBi gain allows bending the antenna to fit any enclosure shape
• 4G LTE network support at frequency below 0.3 GHz covers sub-GHz LTE bands used in IoT modules
• 4g lte antenna compact flat profile reduces enclosure height compared to external whip

Technical specifications:

Applications:

• Remote sensor node uses this antenna to send 4G data readings to a cloud dashboard
• School IoT project connects this to a 4G module to stream live weather data online
• 4dBi 4G LTE Flex PCB Antenna fits inside a vehicle tracking unit behind the dashboard panel
• Fleet monitoring device reads GPS location and transmits over 4G using this antenna at 3 dBi gain

Package includes:

• 1 x 4dBi 4G LTE Flex PCB Antenna