Built-in antenna system for indoor wireless communications

摘要

Antennas (44, 46) are buried, except for their emitting surfaces, within opposite surfaces of a selected wall (10) in a building and connected to an access point (40) via a power divider (42). Preferably the antennas are installed in a corner portion of the wall and a third antenna is installed to provide line of sight communication in a direction not otherwise covered. In one form of the invention, a first antenna structure is installed to pass through a selected building wall and has a sliding structure that can be adjusted according to the thickness of the wall. The first antenna structure preferably comprises two horn antennas which are exposed at the both sides of the wall and are parallel with the wall. A feed transmits a signal received from the access point to the two horn antennas and a sliding waveguide wall connects the horn antennas and the feed in a sliding structure, in order to install the antennas correctly for the thickness of the wall.