Hermetic package with external patch antenna and associated method

Abstract

An antenna package includes a lid-like structure that fits onto an electrically conductive, metallic box-like structure. The lid-like structure includes an electrically conductive, metallic seal member that is connected to an antenna and defines a primary opening. The antenna includes a dielectric mounted between an inner metallic layer and an outer metallic layer. The connection between the seal member and the antenna is a substantially hermetic, soldered connection between the seal member and the inner metallic layer, such that the inner metallic layer is electrically connected to the seal member. The soldered connection secures the antenna to the seal member such that the inner metallic layer occludes the primary opening. A substantially hermetic, fused connection is provided between the lid-like structure and the box-like structure so that a hermetically sealed chamber is defined within the box-like structure. Electric circuitry is positioned in the chamber and is connected to the antenna. A connector opening or openings may be defined through the seal member, and an electrical connector, such as a coaxial cable, extends through at least one of the connector openings. The lid-like structure can be formed by placing solder between the inner metallic layer of the antenna and the outer surface of the seal member, and introducing a heating tool into the primary opening so as to melt the solder and thereby solder the inner metallic layer to the seal member.