4dBi UHF PCB RFID Antenna-230x230mm

An 865–868 MHz antenna is designed for UHF RFID and low-power wireless applications operating in the European ETSI SRD band. Typical uses include UHF RFID readers (EPC Gen2 / ISO 18000-6C), asset tracking, warehouse management, access control, smart retail, race timing, and IoT/M2M systems deployed in Europe and other regions following ETSI regulations.
Airplux offers this band across multiple product families: the ETSI 865–868 MHz RFID antenna line (3–15 dBi PCB, panel and mat antennas), near-field RFID antennas, narrow-beam antennas, and ETSI UHF integrated reader antennas. For example, the 3 dBi circular-polarized PCB antenna APRIA8003CM-137 suits compact desktop readers, while high-gain panel models support long-range portal and gate applications.

ETSI 865–868 MHz antennas are tuned for the European UHF RFID band (ETSI EN 302 208), while FCC 902–928 MHz antennas cover the North American band (FCC Part 15). The two bands do not overlap, so an antenna optimized for one will have degraded VSWR, gain and read range on the other. Choose the version that matches your reader’s regional profile.
Airplux manufactures both variants with matching mechanical designs — e.g., the ETSI 865–868 MHz panel series and the FCC 902–928 MHz series are available at the same gain levels (3–15 dBi). For global or multi-region deployments that need one SKU for both markets, the wideband UHF 860–960 MHz antenna line covers both bands in a single antenna, ideal for asset tracking and smart retail projects shipped worldwide.

VSWR (voltage standing wave ratio) measures how efficiently the antenna accepts power from the reader. A VSWR of ≤1.5 across 865–868 MHz means roughly 96% of the reader’s transmit power is radiated, with minimal reflection back into the RF port — better than the industry-common ≤2.0 spec, and it also protects the reader’s transmitter from reflected power.
In practical terms, the low VSWR of this antenna translates into a stable, predictable read zone with less detuning sensitivity to nearby mounting structures. It is a meaningful quality differentiator when comparing UHF RFID antennas: ask for the full S11/VSWR sweep across the band, not just a center-frequency figure. This antenna is 50 Ω with an SMA-Female connector and handles up to 100 W input power.

DC Ground means the antenna’s radiating element is DC-shorted to ground, so static charge and lightning-induced surge currents on the antenna or cable are drained to earth continuously instead of building up and damaging the reader. It is a standard protection feature for antennas mounted on metal doors, building exteriors, gantries or other elevated structures.
This 4 dBi antenna includes built-in DC Ground protection; for outdoor or long-cable installations, pair it with a coaxial lightning arrestor and proper earth grounding for full protection. The combination prevents the two most common causes of RFID reader RF-front-end failure: accumulated static discharge and induced surge from nearby strikes.

At just 1 mm thick and 230 × 230 mm in footprint, this antenna can be integrated flush into surfaces where conventional panel antennas (typically 20–30 mm deep) cannot fit — inside door frames, under conveyor covers, behind workstation desks, within machine guarding, and inside smart cabinets or gate housings.
It is a bare PCB antenna (natural color, 0.3 kg) rated from –20 °C to +60 °C, so for permanent installations we recommend a non-metallic protective cover or lamination spaced a few millimeters from the radiating surface — avoid direct metal contact, which would detune the patch. Despite the slim profile it maintains 4 dBi gain and circular polarization, and the 100 W power rating leaves ample headroom over any ETSI-compliant reader output.

For door control and production line applications, yes. A circular-polarized 4 dBi antenna with an ETSI-compliant reader (up to 2 W ERP) typically delivers a 1–3.5 m reliable read zone with a wide 74° × 72° beam — ample coverage for a standard doorway, gate lane or conveyor checkpoint where tags pass within a meter or two of the antenna.
Choose higher gain (8–15 dBi) only when the read zone must extend farther — long-range portals, dock doors with deep approach paths or yard tracking. A useful rule: at close range, a lower-gain antenna’s wide beam gives more consistent reads than a narrow high-gain beam, because tags are captured across a larger area and more orientations. Airplux offers the full 3–15 dBi ETSI range in matching form factors if your project mixes short and long zones.