Gain-adjustable bidirectional end-fire antenna and optimization method thereof

Abstract

The invention discloses a gain-adjustable bidirectional end-fire antenna and an optimization method thereof and belongs to the technical field of antennae. According to the invention, the unit form, the working frequency and the unit number of the antenna are not limited at all. On the basis that the efficiency in power transmission is maximized, a weighting matrix is introduced so as to realize the manual distribution of the receiving antenna power. That means, the regulation and control of each beam gain of a transmitting array is realized. by adopting the above design, the coupling among units and the influence of a complex environment can be included in a scattering matrix, so that array units can be configured more conveniently and more flexibly. The workload of array antenna design is reduced. Compared with a traditional array design method, the design method provided by the invention has obvious advantages. Under the condition that the end-fire gain is not changed at all, the purpose of greatly reducing the size of the antenna is achieved. The complex electromagnetic environment can be considered, and the antenna design process is greatly simplified. The effect of manually regulating and controlling the bidirectional end-fire gain is achieved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a gain-adjustable bidirectional end-fire antenna and an optimization method thereof. Background technique [0002] At present, bidirectional endfire antennas are widely used in narrow, long, and straight communication scenarios (such as long streets, long bridges, tunnels, highways, railways, subways, and corridors, etc.) due to their high gain and bidirectional radiation characteristics. Bidirectional end-fire antennas are often used as microwave relays to suppress multipath effects and improve link efficiency. In the traditional array design, people largely rely on the antenna array factor, and the antenna array factor is based on some simplifications and assumptions. Therefore, in order to use the antenna array factor concept, additional effort, such as element decoupling, is sometimes required. The traditional way to achieve two-way end-fire radiation is to place two antenna...

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Problems solved by technology

The traditional way to achieve two-way end-fire radiation is to place two antenna arrays back to back, such as placing two Yagi antennas in opposite directions. However, this design method will undoubtedly double the volume of the antenna, but it is different from the one-way Yagi antenna Compared with the design, the gain is reduced by about 3dB, and so far no one has done research on the control of the end-to-end radiation gain of the bidirectional end-fire antenna

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