Full-wave Calculation Method of Antenna Isolation Based on Transmitting Antenna and Receiving Antenna Line Ports

Abstract

The invention discloses a full-wave calculation method of antenna isolation based on a transmitting antenna and a receiving antenna line port, comprising the following steps: S1. loading an initialized CAD grid model; S2. performing receiving / transmitting antenna on the target grid model S3. Extract the coordinates of the basis function list, and extract the basis function serial number according to the relationship between the coordinates of the center point of the basis function and the coordinates of the receiving antenna feed and the coordinates of the transmitting antenna feed; S4. Calculate the coordinates of the transmitting antenna and the receiving antenna Line port excitation and port current; S5. Calculate the antenna isolation between the transmitting antenna and the receiving antenna. In the present invention, the feed source of the receiving and transmitting antenna only needs to obtain the point coordinates on the antenna port, and a subdivision point is set at a certain position in the middle of a line segment from the starting point of the feed source to the end point for energy feeding, and the line feed port can be completed The establishment of the model is very convenient and quick, and the isolation calculation is very convenient.

Description

technical field [0001] The invention relates to calculation of antenna isolation, in particular to a full-wave calculation method of antenna isolation based on transmitting antenna and receiving antenna line ports. Background technique [0002] With the rapid development of electronic technology and communication technology, dozens or even hundreds of electronic systems are integrated on the same platform. At the same time, an electronic system may require several or even dozens of antennas working in different bands to receive or transmit Electronic signals, for example, an aircraft or a warship will integrate a variety of electronic devices and their antennas for different functions. The near-far field coupling of different antennas in the same system is very strong, and it may even seriously interfere with the normal operation of each transceiver station, causing the performance of the electronic system to degrade. Therefore, how to predict and avoid this interference is ...

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Problems solved by technology

[0003] Therefore, in the electromagnetic fast calculation scenario, it is of great significance to be able to use numerical methods to accurately calculate the isolation of the antenna. However, when analyzing the line port in the field of large-scale electromagnetic fast calculation, the traditional MOM cannot directly analyze the antenna isolation. , it is difficult to effectively solve the problem of isolation calculation between antennas excited by line structure ports

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