Quasi-plane wave generator and generating method based on array antenna

Abstract

The invention relates to a quasi-plane wave generator and a quasi-plane wave generating method based on an array antenna. The quasi-plane wave generator comprises a two-dimensional array antenna aperture with electrical sizes of length and width exceeding 10 lowest operating frequency wavelengths, an array antenna unit and an array antenna feeding network. The quasi-plane wave generator utilizes aHuygens principle to form a high-quality quasi-plane wave static zone in the vicinity 1.5 times of the aperture size away from the two-dimensional array antenna aperture through performing control over array antenna unit position, excitation amplitude and phases. The quasi-plane wave generator and the generating method based on the array antenna have wide application range, can be applied to directional diagram measurement of an electrical-large antenna and RF index measurement of a system having the electrical-large antenna, and are particularly suitable for base station antenna measurementof 5G mobile communication and measurement of terminal antennas and systems in millimeter wave bands.

Description

technical field [0001] The present invention relates to the field of electromagnetic field and microwave technology, the field of array antenna technology, the field of antenna and system measurement technology, especially to the field of 5G mobile communication base station antenna measurement and millimeter wave band terminal antenna and system measurement. The specific content is an array antenna-based A quasi-plane wave generator and its generation method. Background technique [0002] At present, the research on 5G mobile communication technology and the production of related prototypes have set off a wave of innovation in the mobile communication industry around the world. As one of the key technologies of 5G mobile communication technology, large-scale active antenna array technology has received extensive attention from the industry. The 5G Massive MIMO antenna OTA measurement method is currently a research hotspot in the field of communication antennas. Many equipm...

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Problems solved by technology

[0007] The invention solves the problem by solving the problem that the existing compact field is expensive and the real far field requires a high test distance, and provides a quasi-plane wave generator and a generation method based on an array antenna, which has low production cost and difficulty, and is easy to install. Simple, adjustable frequency, and the advantages of covering a single frequency band or multiple frequency bands

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