| 摘要 |
A concealed antenna assembly includes a base aligned with and attached to a ceiling, a planar sign having a transparent front and back face and an interior surface, a planar antenna concealed within the planar sign, and a light source for illuminating the sign. The sign is disposed substantially perpendicular to and beneath the base. The interior surface of the sign defines a channel extending within the sign in which a planar microstrip antenna is concealed. The antenna has a front and back face and a radio frequency connection point. The front or back face of the antenna has lettering visible through the front or back face of the sign. A surface area of the front or back face of the antenna is equal to or less than a surface area of the front or back face of the sign.
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