Adafruit
Adafruit Slim Sticker GSM Cellular Quad-Band Antenna 3dBi uFL 75mm
A 75 mm stick-on GSM antenna with uFL connector and 3 dBi gain for 850/900/1800/1900/2100 MHz bands
- TypeEngineering Development Tools
- Slim 75 mm profile fits tight enclosures
- 3 dBi gain improves signal on 850/900/1800/1900/2100 MHz bands
- uFL connector plugs directly into FONA modules
- Self-adhesive back mounts on any flat surface
- Weighs only .5 g for minimal load
Quad-Band GSM Antenna for RF Projects
This slim 3dBi cellular antenna covers the 850, 900, 1800, 1900 and 2100 MHz bands for GSM and GPRS development. It measures 75 mm overall with a 38 mm radiating element and weighs 0.5 g. The adhesive back allows quick mounting inside enclosures for DIY phones or data loggers. A uFL connector provides the RF link to modules such as the FONA.
Check uFL Compatibility and Band Requirements
Verify that your radio module uses a uFL jack and operates on the listed frequency bands before ordering. The antenna is a passive element and needs no power supply. Ensure the mounting surface is clean for the adhesive pad to hold securely. No additional cables or adapters are included.
Thin Profile with Peel-and-Stick Mounting
At 2 mm thick the antenna adds minimal bulk to a handheld or wearable build. The stick-on base lets you fix it to plastic or metal cases without drilling. The short uFL tail keeps the connector close to the board, reducing strain on the delicate receptacle. Handle the uFL plug carefully when mating or unmating to avoid damage.
Highlights
- Slim 75 mm profile fits tight enclosures
- 3 dBi gain improves signal on 850/900/1800/1900/2100 MHz bands
- uFL connector plugs directly into FONA modules
- Self-adhesive back mounts on any flat surface
- Weighs only .5 g for minimal load
Specifications
| Type | Engineering Development Tools |
|---|
Questions about this item
Does the antenna ship with any cables, adapters or mounting hardware, or is the uFL connector the only attachment point?
The package contains only the 75 mm stick-on antenna with its uFL connector; no cables, adapters or extra mounting hardware are included.
Which frequency bands does this 3 dBi antenna cover so I know it matches my regional GSM network?
It operates on the 850, 900, 1800, 1900 and 2100 MHz bands used by GSM and cellular networks worldwide.
How much signal improvement can I expect from the 3 dBi gain when the antenna is stuck inside a plastic enclosure?
The 3 dBi gain roughly doubles received power compared with a 0 dBi reference, helping maintain a usable link through a thin plastic case.
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