Quality analysis of antenna reflection coefficient in massive MIMO antenna array module
Leinonen, Marko E.; Tervo, Nuutti; Sonkki, Marko; Pärssinen, Aarno (2018-11-29)
M. E. Leinonen, N. Tervo, M. Sonkki and A. Pärssinen, "Quality Analysis of Antenna Reflection Coefficient in Massive MIMO Antenna Array Module," 2018 15th European Radar Conference (EuRAD), Madrid, Spain, 2018, pp. 533-536. doi: 10.23919/EuRAD.2018.8546591
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https://urn.fi/URN:NBN:fi-fe2018121450887
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Abstract
Number of antennas per an antenna module will increase in upcoming 5G millimeter wave (mmW) radio products. The usage of antenna arrays compensates the increased propagation loss of a radio signal at mmW frequencies. The worst performing antenna defines the quality level MIMO antenna module. This paper presents an analysis and a relationship between the variation of the antenna resonance frequency and the reflection coefficient. A probability density function (PDF) of the antenna reflection coefficient at the specification limit is a non-linearly scaled mirrored version of the PDF of the variation of the antenna resonance. We measured the PDF of antenna reflection coefficient from manufactured prototypes and there is a good correlation between the measured and the simulated PDFs.
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