Visible light communication meniscus lens antenna for miniaturization of transceiver and its design method

Abstract

The present invention proposes a visible light communication concave-convex lens antenna and its design method for the miniaturization of the receiving end. By selecting the lens combination and spatial arrangement with appropriate parameters, a clearly separated light spot of reduced size is formed at the receiving end, and then at the receiving end The lens is used to collect and receive the light paths of each color separately, so as to realize parallel high-speed visible light communication. The advantages of the present invention are as follows: firstly, by using the concavo-convex cascaded optical antenna system, the receiving end can form a separated light spot with reduced size, which can effectively realize the miniaturization of the system. Second, parallel communication is realized by independently receiving separated light spots, which avoids the use of dichroic mirrors and optical filters, and effectively reduces the complexity of system implementation and deployment costs. Third, by selecting a lens with reasonable parameters and a spatial layout, we can adjust the imaging size ratio and the specific imaging position, that is, the antenna system can adapt to different application scenarios and has good robustness.

Description

technical field [0001] The invention relates to the technical field of visible light communication and the field of optical antennas, in particular to a visible light communication concave-convex lens antenna and a design method thereof for the miniaturization of the receiving and receiving ends. Background technique [0002] Visible Light Communication (VLC) uses the visible light spectrum for communication. Visible light communication has many advantages such as rich spectrum resources, freedom from electromagnetic interference, safety and reliability, and has been extensively studied in recent years. At present, visible light communication is mainly deployed based on light-emitting diodes (Light Emitting Diode, LED). It has been widely used in many scenarios such as lighting and outdoor LED large screens. LED-based visible light communication can be built on the existing lighting infrastructure, which can greatly reduce the deployment cost and has a good application prosp...

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Problems solved by technology

However, these two implementation schemes have certain limitations. Scheme 1 has a large imaging size during long-distance imaging, so the size of the optical module at the receiving end is correspondingly large and difficult to miniaturize. At the same time, multi-color multiplexing requires the use of multiple optical filters. chip, which also increases the cost of system deployment; in solution 2, when using RGBY four colors to realize parallel high-speed visible light communication, it is necessary to use three dichroic mirrors at the transceiver end, the system complexity and implementation cost are high, and the system is also difficult miniaturization problem

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