Antenna
Antennas for GSM, GPS and RF modules — SMA 900/1800 MHz GSM antenna, 15 cm PCB antenna with IPEX (u.FL) connector and an SMA-SMA connector. The cheapest way to double or triple a module’s signal.
Antenna — buying guide
The antenna determines how far the module’s signal will reach: the same GSM module cannot get network coverage with a poor antenna. In the Antenna category you’ll find GSM antennas and a connector for joining them.
Which one to choose?
- For a module with an SMA jack: GSM Antenna SMA is 5 cm long and designed for 900 MHz and 1800 MHz. It screws directly into the module’s jack.
- For a module with an IPEX jack: PCB antenna is a thin flat antenna with a 15 cm cable. It fits easily inside an enclosure.
- To join two SMA parts: SMA-SMA connector connects cables or devices to each other.
What to look for
- Frequency: the antenna must match the module’s frequency. A GSM antenna is not suitable for 2.4 GHz WiFi or GPS.
- Connector: check the module’s connector. SMA is the large screw-on connector; IPEX is the small press-on connector on the board.
- Placement: a metal enclosure weakens the signal. Route the antenna outside the enclosure and keep it away from the battery and motor.
- Do not run without an antenna: a radio transmitter can be damaged if it operates without an antenna.
Typical projects
- Using a SIM800L module in a small enclosure with a PCB antenna.
- Bringing a GSM module’s antenna out of a metal cabinet.
- Changing the antenna position in a weak-signal area and checking the result.
Related categories
What is the difference between SMA and IPEX?
SMA is a sturdy screw-on connector that can be plugged and unplugged frequently. IPEX is small and fragile and is intended for a connection that usually stays in place.
Can you use a GSM antenna on a WiFi module?
No. Even if the connector fits, the antenna is designed for a different frequency and the range will drop significantly.
