US Patent 9000988 Wireless field device with rugged antenna and rotation stop

A field device includes a housing having at least an antenna receiving bore. Field device electronics are disposed within the housing and include wireless communication circuitry configured to communicate wireless process information. An antenna assembly includes an antenna base engaged within the antenna receiving bore of the housing. The antenna assembly including an antenna operably coupled to the wireless communication circuitry. The antenna assembly is rotatable within the bore by an amount less than one full rotation, and rotation of the antenna assembly varies orientation of the antenna.