Antenna assembly and communication device

A communication device, comprising:

• a housing comprising an inner cavity;
• an antenna assembly, comprising:
• a lens disposed on the housing and comprising a first refractive surface and a second refractive surface, wherein the second refractive surface faces away from the inner cavity;
• a guide rail located on one side of the first refractive surface of the lens, wherein the guide rail is a linear guide rail;
• an antenna array comprising a plurality of radiating elements arranged in an array, wherein the antenna array is slidingly connected to the guide rail, and wherein the antenna array is configured to move on the guide rail so that a beam pointing direction of the antenna assembly moves in an extension direction of the guide rail in order to perform mechanical beam sweeping within a first sweeping range in the extension direction of the guide rail wherein in the extension direction of the guide rail, a length by which any end of the guide rail exceeds a corresponding end of the lens is l′, wherein l′ satisfies:
• l′≥f*tan θ,
• wherein f is a distance between the guide rail and the lens in a direction perpendicular to the extension direction of the guide rail, and wherein θ is a maximum phase modulation sweeping angle;
• a driving mechanism coupled to the antenna array and configured to drive the antenna array to slide on the guide rail;
• and
• a phase shifter coupled to the plurality of radiating elements and configured to adjust feed phases of the plurality of radiating elements to perform, when the antenna array is at different locations on the guide rail, phase modulation sweeping within a second sweeping range by adjusting the feed phases of the radiating elements;
• and
• a control unit disposed in the housing and separately coupled to the driving mechanism and the phase shifter, wherein the control unit is configured to:
• control the driving mechanism to drive the antenna array to move on the guide rail;
• and
• send, when the antenna array moves to each location, a phase configuration signal to the phase shifter to control the phase shifter to adjust the feed phases of the radiating elements.