A structure containing an antenna with an orientation which can be changed when one part of a two-part structure is turned relative to the other on a rotating shaft includes first and second structures as the two parts. The second structure is rotatably connected to the first structure through the rotating shaft, and the second structure comprises an antenna plate. When the second structure is rotated relative to the first structure, the rotated antenna plate allows a wider range of wavelength frequencies within the rotation range of the second structure.