A Single-Layer Metasurface Antenna fed by Half Square Loop

Qiu, Yonghui; Weng, Zibin; Liu, Jianfeng; Jia, Leyu; Lü, Hao; Cao, Zhi-Xun

doi:10.1109/icmmt52847.2021.9618383

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Due to the simple fabrication and good compensation effect, antipad is widely used for compensating the capacitive discontinuous structure, such as coaxial-microstrip 10 and microstrip-via 11,12 transition section. In addition, antipads have been used in power delivery systems, 13,14 antenna, 15,16 and millimeter wave transformers. 17 The above studies are all focused on signal integrity caused by compensation structure.…”

Section: Introductionmentioning

confidence: 99%

Impact of impedance compensation structure in coaxial‐microstrip transition section on near‐field radiation

Zhang

Gao

Wang

et al. 2023

Micro & Optical Tech Letters

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Coaxial‐microstrip transition sections are extensively used in radio frequency (RF) circuits, providing electrical interconnection and signal transmission. However, an antipad used for impedance compensation in the coaxial‐microstrip transition section leads to signal return path discontinuity and radiation emission. Accordingly, in this current work, the impact of impedance compensation structure on the near‐field radiation in the coaxial‐microstrip transition section was investigated by theoretical analysis and experimental testing. A 3D electromagnetic field model of a circuit board with an anti‐pad was developed to calculate the S‐parameters and radiation electric field. Based on the characteristics of the electric near‐field probe, a transfer function model was also developed to convert the radiation electric field obtained by the electromagnetic field model into the output voltage for better comparison with the test results. In addition, the effect of the rise time of the input signal on near‐electric field radiation was also studied in this work. The experimental results are in good agreement with the simulation results obtained from the transfer function model. The results of this study provide a better understanding of the electromagnetic radiation characteristics caused by the impedance compensation structure and theoretical support for compensation optimization strategy in engineering.

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