Design method of substrate integrated waveguide antenna

Abstract

The invention discloses a design method of a substrate integrated waveguide antenna. The substrate integrated waveguide antenna comprises a waveguide assembly and dielectric substrates. The waveguide assembly is composed of a plurality of cylindrical conductors arranged in an array, the dielectric substrates are connected to two axial ends of the waveguide assembly, and one dielectric substrate is connected with a coaxial cable. The method comprises the following steps: S1, calculating a basic solution of scattered waves; S2, further deforming the basic solution of the scattered wave in the S1 by using a plurality of boundary conditions; and S3, converting the calculation of the electromagnetic field into a calculation problem about a cylindrical surface coordinate in a plane by adopting a moment method of a global basis function. When electromagnetic wave radiation is analyzed, a moment method based on a global basis function is adopted, the main problem of antenna design is converted into a calculation problem about cylindrical coordinates, and the data size of simulation calculation is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a design method of a substrate-integrated waveguide antenna. Background technique [0002] In recent years, wireless communication technology has been developed rapidly and widely used. In a communication system, due to the nonlinear characteristics of active devices, a large number of clutter signals will be generated outside the working frequency band, which will deteriorate the system performance on the one hand and interfere with other systems on the other hand. Therefore, high requirements are placed on the frequency selectivity of the antenna and filter, so as to achieve the purpose of suppressing out-of-band clutter and interference. [0003] Substrate integrated waveguide is a waveguide structure that has been studied and applied more in recent years. It not only retains the characteristics of small radiation loss, low insertion loss, and large power capacity of traditi...

AI Technical Summary

Problems solved by technology

[0004] The frequency selection characteristics of common antennas are very poor, and the suppression of out-of-band clutter and interference to the system is not obvious. Therefore, an antenna with good frequency selection characteristics is needed to suppress out-of-band clutter and interference, thereby reducing the impact on other device designs in the system. meet the requirements of the indicators, and reduce the implementation cost of the system

Moreover, at present, due to the large amount of waveguide simulation calculation data for the antenna, it is difficult to calculate reasonable antenna parameter values ​​so that the scattered wave intensity of the antenna can be optimized.

Images