Patent ID: 9257735
Filing Date: 2016-02-09
CPC Classification: H01P,H01Q,Y10T

Claim Text:
1. An antenna apparatus comprising: a metal lower assembly and a metal upper assembly, the lower and upper assemblies together forming a cavity to contain a radio frequency (RF) circuit device; the upper assembly comprising a waveguide flange interface disposed at an external surface of the upper assembly, the waveguide flange interface comprising a waveguide channel extending from the external surface to an internal surface that forms a surface of the cavity, an internal opening of the waveguide channel at the internal surface being substantially centered with a first centerline of the upper assembly parallel with the external surface and offset from a second centerline of the upper assembly parallel with the external surface, the second centerline perpendicular to the first centerline, wherein the upper assembly is removably attachable to the lower assembly in either of a first orientation or a second orientation relative to the lower assembly, the second orientation representing a 180 degree rotation of the upper assembly relative to the first orientation; and the RF circuit device disposed in the cavity, the RF circuit device comprising: