Near field simulator

Abstract

The invention discloses a near field simulator. Near-field spherical wave-front simulation is realized based on compact-field de-focusing control. Through continuous adjustment of the de-focused irradiation of an excitation source on a reflection plane, equivalent spherical wave sources at different distances are simulated continuously, with the purpose of compactly realizing a near-field electromagnetic environment with large distance coverage to conduct a near-field simulation test on a radio system. The near field simulator can work in a more controllable natural environment or electromagnetic environment, and is conducive to improving the test conditions of electromagnetic simulation debugging, reducing the test cost and improving the test efficiency. The near field simulator is better than an external field largely affected by natural weather. The near field simulator can work at the position of a wider-range equivalent spherical wave source, and is conducive to dynamically and variably configuring a near-field wave-front required for test and conducting a simulation test on a more vivid and changeable near-field electromagnetic environment required. The near field simulator is better than a near field of which the transmitting and receiving distance is controlled directly.

Description

technical field [0001] The present invention relates to a near-field simulator, in particular to a near-field simulator based on a compact field system, which is mainly used for compactly realizing the simulation test of a radio system, the spherical surface required for a communication antenna or a radar target to work in the near field Wave electromagnetic environment, such as short-distance communication for Massive MIMO antennas, terminal signal simulation and testing of precision guidance radars, to improve the test quality of simulation, improve test efficiency and reduce test costs. Background technique [0002] With the in-depth development of communication and radar technology, the high-fidelity simulation test of electronic equipment plays an extremely important role in improving the quality of research and development and accelerating the development progress. The transmission or reception of traditional communication antennas and radar antennas interact in the fo...

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Problems solved by technology

Although the simulation test and machine debugging of the radio system can directly control the distance between the transmitting and receiving antennas, or the distance between the antenna and the radar target to achieve near-field wavefront simulation, the adjustment amount is the control amount. In actual operation Due to the large demand for adjustment, such as from hundreds of meters to tens of meters, the relationship between the two cannot be enlarged, which brings great difficulties to the simulation test research.

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