5cd99c150b50b183ff17a65e125eba96 sensors_a2018v18p3301.pdf 5d1c08196f420b1c3184dc1e3003b7ec1078a2eb sensors_a2018v18p3301.pdf 0f968ad1c072911b5bcc6e84d6778104cede85cece9d85c0114a2940c574005b sensors_a2018v18p3301.pdf Title: Enhancing the Number of Modes in Metasurfaced Reverberation Chambers for Field Uniformity Improvement Subject: The use of metasurfaces to increase the number of modes, lower the operating frequency, and improve the field uniformity in reverberation chambers (RCs) is investigated in this paper. The method used to improve the field uniformity and decrease the resonance frequencies is based on increasing the number of modes by using the concept of subwavelength cavities. The resonance frequencies of a RC with metasurface wall are derived and expressed analytically in terms of macroscopic characteristics. Simulation of the reflection phase of the unit cell is then given as a guideline to choose the required microscopic parameters of the designed metasurface. The mode density in such subwavelength RCs is then obtained using a numerical eigenmode solver. Compared to traditional RCs, a much higher modal density is obtained at low frequencies. The standard deviation of the field uniformity in the test volume of the RC corresponding to different types of metasurface walls is finally compared. It is shown that by increasing the number of modes in the RC at the lower band, the operating frequency decreases and the field uniformity of the RC is improved. Keywords: metasurface; reverberation chamber; modes; field uniformity Author: Hengyi Sun, Changqing Gu, Zhuo Li, Qian Xu, Jiajia Song, Baijie Xu, Xiaohang Dong, Kuan Wang and Ferran Martín Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.18 CreationDate: Mon Oct 1 08:49:29 2018 CEST ModDate: Mon Oct 1 08:49:29 2018 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 10 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 7797400 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- XRIPPC+URWPalladioL-Ital Type 1 Custom yes yes no 45 0 ZZLJCW+URWPalladioL-Bold Type 1 Custom yes yes no 46 0 WLENKM+VnURWPalladioL-Bold Type 1 Custom yes yes no 47 0 OJCMJR+URWPalladioL-Roma Type 1 Custom yes yes no 48 0 EROCFA+VnURWPalladioL Type 1 Custom yes yes no 49 0 RVSEMT+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes 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