From Embedded Antenna Design: "Waterproof LTE MIMO blade antenna for outdoor applications"
The MIMO-Blade waterproof LTE MIMO blade antenna is an excellent solution for LTE applications where a MIMO antenna is be mounted outdoors or in an environment where moisture is present. This antenna is housed in an IP67 waterproof, low-pressure moulded and durable material and can be mounted onto non-metal surfaces via suction cups (2 supplied as standard), velcro, cable ties, adhesive tape or adhesive.
Particularly-suited to mobile applications such as trucking and transit where the antenna could be installed exterior to the cab onto or underneath a non-metal surface or covering etc, the MIMO-Blade waterproof LTE MIMO blade antenna offers excellent RF performance in a compact package. Complementing LTE routers and radios with 2 x LTE antenna connectors, this antenna can aid stealth or covert installations where antennas should be functional, but not seen.
Fed by 2 coaxial cables that can be terminated in SMA, CRC9, TS9, FME and other connectors, the MIMO-Blade is a a very flexible solution because it can also neatly address applications such as vending, utilities telemetry, monitoring, CCTV and security.
More information on the MIMO-Blade can be found here.
Source: https://www.ead-ltd.com/news/waterproof-lte-mimo-blade-antenna-for-outdoor-applications