It's a 43.5x20mm flex PCB antenna with double-sided tape on the backside making it perfect for mounting inside of an enclosure. It has been designed specifically to be attached to a plastic wall of around 1.5-2.0mm thickness. In the open air, it does not perform as well as when it has been mounted properly.
The antenna cable is a 110mm long, 1.13mm OD 50ohm coaxial cable that is soldered onto the antenna. The other end of the cable is terminated with a 50ohm IPEX connector that attaches directly to our LoRa and SubGHz Challenger boards.
The back of the antenna is lined with a 3M (300LSE) double-sided adhesive which makes it super easy to attach the antenna to the inside of your product enclosure.
Return loss diagrams of the antenna mounted on a 2mm thick 15cm x 10cm polycarbonate sheet:
Reference cursor at 868 MHz:
Reference cursor at 915 MHz
|Center Frequency||891 MHz|
- 1x 868/915MHz Flexible ISM Band Antenna