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Butler matrix structure

A Butler matrix and antenna array technology, applied in the field of Butler matrix structure, can solve the problems of complex overall structure of Butler matrix, increase in insertion loss, increase in the number of cross points, etc., to simplify the structure, reduce insertion loss, and reduce the number of Effect

Inactive Publication Date: 2014-02-19
ZTE INTELLIGENT IOT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] With the continuous expansion of the application platform, the number of ports in the Butler matrix is ​​also increasing, the overall structure of the Butler matrix is ​​becoming more and more complex, the number of intersections is also increasing significantly, and the resulting insertion loss is also increasing.

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] The Butler matrix structure that an embodiment of the present invention provides, its basic structure comprises a plurality of input ports, a plurality of output ports, a plurality of directional couplers and a plurality of phase shifters; Between the plurality of input ports and the plurality of output ports The network formed by the plurality of directional couplers and the plurality of phase shifters is connected to each other, and each outpu...

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Abstract

The embodiment of the invention provides a Butler matrix structure. The structure is simplified, insertion losses can be reduced, and the transmission efficiency is improved. The Butler matrix structure comprises a plurality of input ports, a plurality of output ports, a plurality of directional couplers and a plurality of phase shifters, the input ports are connected with the output ports through a network composed of the directional couplers and the phase shifters, each output port is connected with one antenna array unit, the output ports and the antenna array units are located in the middle of a Butler matrix, and phases of adjacent antennas of the antenna array units are opposite.

Description

technical field [0001] The invention relates to the technical field of microwave antenna engineering, in particular to a Butler matrix structure. technical background [0002] The concept of Butler's matrix was first proposed in 1961. Each beam that can be formed by the Butler matrix can obtain the gain provided by the entire antenna surface, which is a multi-beam forming method without loss of gain. Since the formed multi-beams are orthogonal, it is very beneficial to the synthesis of the pattern of other complex antennas. At the same time, the formed multi-beams can be used for both transmission and reception, and can be implemented with various transmission lines, making it possible to share multi-beam receiving and transmitting antennas. In addition, compared with other multi-beam and adaptive beam-forming methods, the Butler multi-beam array forming network has a simple network structure, low cost, and is easy to achieve broadband. It has great potential as a feed net...

Claims

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Application Information

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IPC IPC(8): H01Q3/40H01Q21/00
Inventor 王金龙冯春楠傅佳辉
Owner ZTE INTELLIGENT IOT TECH