SKU: TH2125
Mini GSM/Cellular Quad-Band Antenna - 2dBi SMA Plug is a slim external antenna designed for cellular and GSM/GPRS hardware that supports the 850/900/1800/1900/2100MHz bands. With 2dBi gain and 50Ω impedance, it is a practical choice for development boards, prototypes, and embedded wireless builds that need an external SMA antenna.
The antenna uses an SMA male connector, a common interface on many cellular development boards. It is well suited for quad-band GSM hardware and is highlighted as a compatible external antenna option for setups such as Adafruit FONA MiniGSM and SIM800-based projects that support an external antenna connection.
Important: if your board uses RP-SMA, you will need an adapter. If your module uses u.FL, a u.FL to SMA adapter cable is required. Also note that cellular modules like FONA need a host microcontroller over UART and do not operate as standalone devices.
Technical details for Mini GSM/Cellular Quad-Band Antenna - 2dBi SMA Plug.
| Specification | Details |
|---|---|
| Frequency | 850/900/1800/1900/2100 MHz |
| Gain | 2 dBi |
| V.S.W.R. | <=2:1 |
| Polarization | Vertical |
| Connector | SMA Male (Option) |
| Impedance | 50Ω |
| Operation Temperature | -20°C ~ 60°C |
| Storage Temperature | -30°C ~ 75°C |
| Dimensions | Approx. 61 x 8 x 8 mm |
| Item | Type | Description |
|---|---|---|
| SMA Port | Direct fit | Connects directly to boards and modems with an SMA antenna connector. |
| RP-SMA Port | Adapter required | An RP-SMA adapter is needed; this antenna does not directly mate with RP-SMA connectors. |
| u.FL Port | Adapter cable required | Use a u.FL to SMA adapter cable for modules such as external-antenna cellular boards with u.FL sockets. |
| Cellular Module Use | System note | Compatible with supported quad-band GSM hardware, but the cellular module still requires a microcontroller and valid network/SIM setup to function. |
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