Antenna 9dBi Bluetooth WiFi 2.4GHz Omnidirectional w/RP-SMA 2400MHz Alfa ARS-N19
- SKU:
- A5
- Availability:
- In stock
- Weight:
- 0.25 LBS
Alfa Network
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.
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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)
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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:
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Broadband VSWR < 1.5 for minimal signal reflection and efficient power transfer across the band
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50 Ohm impedance, ensuring optimal matching with standard RF systems and minimizing signal loss
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Vertical polarization, enhancing compatibility with systems designed for vertically polarized signals
Supported Wireless Protocols & Technologies
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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
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Designed for use with devices featuring RP-SMA antenna ports, including:
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Wireless access points
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Embedded modules
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Bluetooth adapters
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Industrial IoT terminals
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Radiation Pattern & Use Cases
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Omni-directional radiation with 360° horizontal beamwidth:
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As a Bluetooth antenna: Enables uniform signal coverage for transmission and reception in all directions
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As a Wi-Fi client antenna: Capable of connecting to access points regardless of orientation
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Compact, portable form factor allows integration into mobile deployments or storage in small enclosures (e.g., laptop bags).
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2400~2500 MHz |
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50 Ω |
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<=1.5 |
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9 dBi |
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RP-SMA Male |
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Operation Temperature |
-40˚C~65˚C |
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Storage Temperature |
-40˚C~80˚C |
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Length |
387.5±5.0 |
ROHS 3 & REACH compliant: Antenna, cable and connector are all compliant with ROHS 3 and REACH.
The VNA chart shows that the antenna is well-matched at 2.431 GHz, with a return loss of –19.68 dB and a near-optimal SWR (~1.25:1). The Smith chart indicates an impedance close to 50 ohms, confirming efficient power transfer at this frequenc.
The chart shows that at 2.431 GHz, the antenna achieves a return loss of –17.90 dB and an SWR of 1.292, indicating low signal reflection and good impedance matching. The multiple dips in the SWR curve suggest the antenna may support multiband operation, with strong performance particularly in the 2.4 GHz ISM band.
At 2.431 GHz, the phase is –33.7° and the group delay is 282.2 ps, indicating stable signal propagation with minimal distortion. The relatively flat delay near resonance suggests good linearity and phase consistency, suitable for time-sensitive applications in the 2.4 GHz band.
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
RELATED PRODUCTS & PAGES:
- Antenna Mounts & Brackets
- Antennas: How to choose
- Directional Antennas
- Omni-Directional Antennas
- Wireless Frequencies: 2.4GHz, 5GHz, 900MHz, WiMax
- RP-SMA Cables, Antennas and Connectors
All of our antennas pass QC test before we ship them.