A Simple and Effective Method for the Resonance Frequencies Identification of the Complex Cavities Within Reverberation Chamber

Hu, Peng; Zhou, Zhóngyuan; Zhou, Xiang; Ji, Jingkang; Sheng, Mingjie; Zhou, Qi

doi:10.1109/lmwc.2020.3008406

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…Sometimes, the field samples fail to fit the Rayleigh model because of the bad stirring, even if the 100th resonant frequency is used as LUF. Of particular note is that the frequency is derived by Weyl formula, the loss and measurement configurations will significantly cause the resonant frequencies shift or broadening [10], clearly accounting for why the Rayleigh model is highly rejected. Meanwhile, it can also be easily explained from the perspective of statistical distribution of the samples that the fields converge to K-Bessel distribution defined by a small number of modes M (generally M < 8) excited within the quality factor bandwidth, rather than the ideal Rayleigh case (also regarding as the asymptotic approximation to K-Bessel distribution with M 8) [9,11,12].…”

Section: Introductionmentioning

confidence: 99%

Alternative method for the determination of the ideal electromagnetic reverberant frequency with frequency stirring technique

Zhai¹,

Zhou

et al. 2021

IEICE Electron. Express

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For arbitrary electrically large cavities, the ideal reverberant frequency is of critical to predict the response of the reference antenna or the electronics inside. To determine the ideal reverberant frequency, this work has carried out a comparison study on the scattering parameter S 11 and S 21 based methods for the general case in reverberation chamber (RC). For the two methods, both of them share the same theoretical basis according to the ergodicity principle, i.e., the ideal field distribution and the commonly used correlation analysis. While for arbitrary electrically large cavities, the S 11 samples rely on the mechanical stirrer (which is not easy to be equipped like that of a classic RC), S 21 samples are more easily recorded by frequency stirring technique. And the corresponding experimental results show that the S 21 based method can provide a more conservative estimate of the ideal reverberant frequency.

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