Millimeter wave array antenna design method and array antenna device

Abstract

The invention provides a millimeter wave array antenna design method and an array antenna device. The design method comprises the following steps of: firstly designing an array model with a feed network, and enabling structure parameters of the feed network to be equivalent to feed current of an array element, so as to directly solve structure parameters of an antenna during array synthesis; replacing a factor directional diagram by a radiation directional diagram of an antenna array, designing a target function through design indexes of the array antenna, and searching an optimum solution of the physical size of an impedance transformer along the direction of the target function via an optimization algorithm. According to the method, the influences of cross-coupling factors are considered in the array synthesis process, the final result does not need coupling compensation, and a simulation manner is adopted to save the cost and simplify the design process. By adoption of joint simulation, a lot of fussy work in the design optimization process of the array antenna is avoided, and the automatic design of the antenna is achieved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a millimeter wave array antenna design method and an array antenna device. Background technique [0002] With the rapid development of wireless Internet, microwave spectrum resources are increasingly scarce. In order to accommodate more users, the future 5G system will expand to the millimeter wave frequency band. An interface for utilizing spectrum resources, that is, an antenna, is an important part of a wireless communication system. While spectrum resources are expanding to the millimeter wave frequency band, correspondingly, in-depth research on antennas in the millimeter wave frequency band is also required. Compared with microwave, the wavelength of millimeter wave is shorter, and the number of millimeter wave antennas can be more in the same physical area. The millimeter-wave antenna is an array antenna, which has the following advantages: the...

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Problems solved by technology

[0004] The technical problem to be solved by the embodiments of the present invention is that the mutual coupling phenomenon of array elements in the array antenna cannot be effectively solved. In view of the above technical problems, an optimized array element synthesis method is proposed, and the antenna radiation pattern obtained by the simulation software is used instead of the array factor. The pattern is used as the target pattern, the feeding network is pre-designed, and the structural parameters of the feeding network are equivalent to the feeding current of the array element to directly obtain the structural parameters of the antenna; through the design of the objective function and the optimization simulation process to Control the direction and speed of algorithm optimization during array synthesis, so as to realize the joint simulation of antenna radiation pattern and optimization algorithm. In the process of array synthesis, the influence of mutual coupling factors is considered, and the final result does not need to be coupled. Compensation, and through the simulation saves cost and simplifies the design process

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