Search

Your search keyword '"Bao, Huaguang"' showing total 91 results
Start Over Author "Bao, Huaguang" Publication Type Periodicals
91 results on '"Bao, Huaguang"'

5. Mechanic–electric–circuit coupling analysis of BAW filter based on FDTD method.

Author

Chen, Shitao, Li, Zheng, Yin, Qiupeng, Hong, Sicheng, Bao, Huaguang, Chen, Ming, Wang, Wei, Ding, Dazhi, and Yu, Ming

Subjects
FINITE difference time domain method, FINITE element method, ACOUSTIC resonators, SOUND waves, FOURIER transforms
Abstract

In this paper, mechanic–electric–circuit coupling algorithm based on the finite‐difference time‐domain (FDTD) method is proposed to analyze a one‐order microwave bulk acoustic wave (BAW) filter. FDTD method is used to solve the coupled mechanic–electric–circuit system equations to obtain the voltage and current at port position of the BAW filter in the time domain. Then S parameters of the BAW filter in the frequency domain are calculated using the Fourier transform. In our work, a one‐order BAW filter consists of two film bulk acoustic resonators (FBARs) by means of series and parallel. These two FBARs in the BAW filter are coupled together through an equivalent electrical connection. Similarly, multiphysical mechanic–electric–circuit analysis of the BAW filter is implemented in the commercial software COMSOL, which is realized by the time‐domain finite element method. The accuracy of the proposed method is verified by comparison with simulation results in COMSOL. In addition, the computational time and memory of the proposed method have obvious advantages over those of COMSOL. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

16. A C‐band 370 W MMIC high‐power PIN limiter with heterogeneous integration.

Author

Dai, Zhou, Li, Chunyu, Yan, Junda, Dai, Jiayun, Zhang, Tiancheng, Bao, Huaguang, and Ding, Dazhi

Subjects
MONOLITHIC microwave integrated circuits, PIN diodes, PERSONAL identification numbers, INSERTION loss (Telecommunication), THERMAL conductivity
Abstract

This paper designs a mesa‐structured monolithic microwave integrated circuit (MMIC) limiter working in C‐band. The quasi‐vertical Si‐based PIN diodes are heterogeneously integrated on the SiC substrate with high thermal conductivity, such that the parasitic parameters are greatly reduced and the power capacity is enhanced. According to the measured results, a maximum insertion loss of 1.1 dB and a minimum return loss of 17.69 dB for both input and output terminals are realized to cover the 5–6 GHz frequency range. The flat leakage of 23 dBm is achieved for a 150 W continuous wave and 370 W pulse input signal level. We believe the proposed MMIC limiter provides an effective tool that can be used in the transmit‐receive modules working in C‐band. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

44. Tunable Broadband Terahertz Metamaterial Absorbers Based on VO2

Author

Kang, Lei, primary, Bao, Huaguang, additional, Campbell, Sawyer D., additional, Werner, Pingjuan L., additional, Werner, Douglas H., additional, Wang, Shengxiang, additional, Cai, Chengfeng, additional, You, Menghan, additional, Liu, Fangyan, additional, Wu, Menghao, additional, and Li, Songzhan, additional

Published
2020
Full Text
View/download PDF

47. Numerical simulation of multi-carrier microwave breakdown in air-SF6 mixtures.

Author

Wang, Lin, Bao, Huaguang, Ding, Dazhi, and Chen, Rushan

Subjects
*MAXWELL equations, *MICROWAVE communication systems, *MICROWAVE plasmas, *MICROWAVES, *COMPUTER simulation, *MATERIAL erosion, *MIXTURES
Abstract

In this paper, the multi-carrier microwave breakdown in air-SF6 mixtures is analyzed with the spectral-element time-domain method. In this process, a three-dimensional multi-physics model coupling Maxwell's equations with electron fluid equations is established. The tail-erosion and frequency shift phenomenon caused by multi-carrier microwave breakdown in different proportions of air-SF6 mixtures can be observed. Numerical results demonstrate that multi-carriers will make the wireless communication system sensitive to microwave breakdown. On the other hand, the different proportions of air-SF6 mixtures can obviously improve the breakdown threshold to inhibit the multi-carrier microwave breakdown, which is favorable to the propagation of multi-carrier microwaves in air. Meanwhile, increasing the pressure can suppress the frequency shift phenomenon, and the proportion of different SF6 in the mixed gas has little effect on the frequency shift of the transmitted wave. Our research provides theoretical guidance for comprehensively exploring the characteristics and physical mechanism of multi-carrier microwave breakdown in air-SF6 mixtures and is helpful for protection of microwave devices and plasma application. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results