Abstract
An increase in the quantity and density of antenna elements increases the mismatched failure rate and measurement difficulty of the multiple-input multiple-output. To simplify the measurement method of the S11 parameter utilizing the traditional vector network analyzer, this article proposes a multiple-input multiple-output measurement method based on microwave imaging. The multiple-input multiple-output element was designed, and then the existence of mismatched scattering of the mismatched state through microwave one-dimensional and two-dimensional imaging simulations was verified. A wideband Vivaldi antenna was designed for measurement imaging verification. The research results show that the proposed method is capable of detecting the mismatched scattering of mismatched elements as well as accurately locating the mismatched elements and mismatched position of circuits behind the element, which improves the measurement efficiency.
Highlights
In recent years, the volume of mobile data services has grown exponentially because the Internet of Things era is developing and expanding
With an increasingly large proportion of energy consumption in information technology systems under the fifthgeneration (5G) Internet of Things (IoT) scenario, reducing the energy consumption of mobile communication network systems has gradually become a vital goal for the development of mobile communication
The power consumption produced by massive multiple-input multiple-output (MIMO) will increase
Summary
The volume of mobile data services has grown exponentially because the Internet of Things era is developing and expanding. The radar is the antenna that transmits the plane wave to illuminate the (MIMO) and detect the matching state of the MIMO array elements by the method of microwave imaging.
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