Method for designing plane reflection array antenna

Abstract

The invention provides a method for designing a plane reflection array antenna. The method comprises the following steps: establishing an array element model in a circular polarization manner, wherein the resonant frequency of the array element model meets design requirements, and the phase position difference of a main polarization reflected wave and a cross polarization reflected wave is 180 degrees; using the array element model to establish a primary plane reflection array antenna model; calculating a directional diagram of the primary plane reflection array antenna model according to an incident excitation wave of the plane reflection array antenna; optimizing the directional diagram of the primary plane reflection array antenna model according to an intersection algorithm; obtaining excitation and compensation phases of each array antenna element model in the primary plane reflection array antenna model according to the optimized directional diagram of the primary plane reflection array antenna model; adjusting the phase of each array antenna element model in the primary plane reflection array antenna model according to the excitation and compensation phases of each array antenna element model in the primary plane reflection array antenna model, so as to obtain the design result of the plane reflection array antenna.

Description

technical field [0001] The invention relates to the technical field of designing antennas, in particular to a method for designing planar reflectarray antennas. Background technique [0002] An array antenna is formed by arranging a plurality of antenna units in a certain arrangement, and the radiation patterns of all the antenna units in the array together form the radiation pattern of the array antenna. [0003] Array antennas are divided into active arrays and passive arrays. Active arrays in the general sense refer to array antennas with nonlinear devices such as power amplifiers in the feed network, while passive arrays refer to arrays with no nonlinear devices in the feed network. However, passive arrays generally also have active power distribution networks; but the following active arrays of the present invention refer to the array antennas of the above two feeding forms, and passive arrays refer to reflectarrays without feeding on this type of array, and the excitat...

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Problems solved by technology

However, using the above optimization algorithm to optimize the design of the active array has many iterations, which takes a long time and consumes system resources.

[0005] For passive arrays, since the amplitude of the excitation cannot be controlled, but only the phase of the antenna elements can be synthesized, more antenna elements are needed than active arrays to precisely control the pattern of the array

Using the existing optimization algorithm to optimize the design of passive arrays takes longer than active arrays, consumes more system resources, and the efficiency of array optimization design is low

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