Antenna 2.4GHz 9dBi Omni-Directional WiFi w/ RP-SMA-male connector

Omni Directional Antenna with articulating RP-SMA (male) connector for 2.4GHz WiFi / wireless networks, Bluetooth, Zigbee. Option: This antenna combined with magnetic mount.
This is a very special low-price offering of a very high quality antenna, due to Data Alliance having a large overstock of inventory of this antenna. Alfa part # ARS-N19 (Data Alliance part# A5)
Compatible with Wireless Access Points & WiFi USB adapters & devices that have RP-SMA antenna jacks.

Omni directional dipole antenna: Radiates signal with a beam of 360 degrees; also receives signal from 360 degrees around it.

Compatibility with wireless standards & applications:

This omni directional antenna operates within the 2.4 to 2.5GHz frequency band, featuring:

Broadband VSWR < 1.5 for minimal signal reflection and efficient power transfer across the band
50 Ohm impedance, ensuring optimal matching with standard RF systems and minimizing signal loss
Vertical polarization, enhancing compatibility with systems designed for vertically polarized signals

Supported Wireless Protocols & Technologies

Wi-Fi Standards (2.4GHz):
Compatible with IEEE 802.11N, 802.11G, 802.11B, 802.11AH
Short-range and IoT Protocols:
Fully supports Bluetooth, ZigBee, Wi-Fi HaLow and other ISM band applications
Machine-to-Machine (M2M) & Telemetry:
Suitable for applications requiring consistent vertical polarization such as remote monitoring, mesh networking, and industrial telemetry

Mechanical & RF Interface Compatibility

Designed for use with devices featuring RP-SMA antenna ports, including:
- Wireless access points
- Embedded modules
- Bluetooth adapters
- Industrial IoT terminals

Radiation Pattern & Use Cases

Omni-directional radiation with 360° horizontal beamwidth:
- As a Bluetooth antenna: Enables uniform signal coverage for transmission and reception in all directions
- As a Wi-Fi client antenna: Capable of connecting to access points regardless of orientation
Compact, portable form factor allows integration into mobile deployments or storage in small enclosures (e.g., laptop bags).

Frequency	2400~2500 MHz
Impedance	50 Ω
V.S.W.R	<=1.5
Gain	9 dBi
Radiation	Omnidirectional
Connector	RP-SMA Male
Operation Temperature	-40˚C~65˚C
Storage Temperature	-40˚C~80˚C
Length	387.5±5.0

TEST RESULTS for FREQUENCY RANGES:

The antenna demonstrates stable performance in the 2.40 GHz to 2.50 GHz band, with an SWR close to 2.0:1 and a Return Loss of approximately -9.3 dB, indicating adequate power transfer and a moderate level of signal reflection. Its impedance, around 80.61 − j34.40 Ω, shows a capacitive component relative to the nominal 50 Ω, maintaining consistent and controlled behavior on the Smith chart, making it suitable for wireless applications that require reliable operation within this band.

Frequency range	Assessment	Rating	Technical performance details
2.40 GHz – 2.50 GHz	Reliable RF Performance	★★★★	RF performance evaluated across the 2.40 GHz – 2.50 GHz frequency range, demonstrating stable and consistent behavior throughout the sweep. Across the measured band, the VSWR remains around 2.0:1, with a Return Loss close to −9.3 dB, indicating adequate power transfer and controlled signal reflection. At 2400 MHz, the VSWR is approximately 2.03:1, confirming consistent performance within the 2.4 GHz operating band. The measured impedance is approximately 80.61 − j34.40 Ω, indicating a capacitive condition relative to the nominal 50 Ω system impedance. The Smith chart response remains stable and well-defined, confirming controlled impedance variation and reliable RF behavior across the evaluated frequency range.

ROHS 3 & REACH compliant: Antenna, cable and connector are all compliant with ROHS 3 and REACH.

Mounts directly onto RP-SMA(female) connector of access point, bridge, USB WiFi adapter, or booster

See other magnetic bases that fit this antenna and have antenna cables with other types of connectors

RP-SMA Connector Characteristics:

RP SMA Characteristics and Key Information
RP SMA Connector Materials Composition
We offer an RP-SMA wrench to assist in installing antennas, cables and adapters with SMA or RP-SMA connector(s).
RP-SMA-male connector fits items that have an RP-SMA (female) jack/connector.
Articulating (Bendable) Right Angle: This antenna can be angled up to 90 degrees (articulating right angle) or positioned straight. The articulating (bendable) right-angle isn’t weatherproof: Water can seep into the angled part of the antenna. Articulating right-angle antennas are therefore recommendable for indoor use or protected outdoors, i.e. under an eave. If you need a weatherproof dipole antenna, you should choose either a straight dipole or one with a fixed right angle. See our weatherproof antennas .

Dipole Antennas: 2.4GHz

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All of our antennas pass QC test before we ship them.

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