Abstract

In this paper, we design a continuous zoom antenna for mobile visible light communication (VLC). In the design, a right-angle reflecting prism was adopted to fold the space optical path, thus decreasing the antenna thickness. The surface of each lens in the antenna is spherical, and the system cost is relatively low. Simulation results indicated that the designed system achieved the following performance: zoom ratio of 2.44, field of view (FOV) range of 18°–48°, system gain of 16.8, and system size of $\text{18 }\mathrm{m}\mathrm{m}\times 6\mathrm{m}\mathrm{m}$. Finally, we established an indoor VLC system model in a room the size of $5\mathrm{m}\times 5\mathrm{m}\times 3\mathrm{m}$ and compared the detection results of the zoom antenna and fixed-focus antenna obtained in a multisource communication environment, a mobile VLC environment, and a multiple-input multiple-output communication environment. The simulation results indicated that the continuous zoom antenna could realize large FOV and high gain. Moreover, the system showed improved stability, mobility, and environmental applicability.

© 2015 Optical Society of America

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