Zobrazeno 1 - 10
of 438
pro vyhledávání: '"Zhang Guohao"'
Autor:
Li, Jingwen, Li, Xiao, Zhang, Guohao, Liu, Jiaqing, Chen, Changdong, Liu, Youwen, Fu, Yangyang
Metagratings (MGs) have emerged as a promising platform for manipulating the anomalous propagation of electromagnetic waves. However, traditional methods for designing functional MG-based devices face significant challenges, including complex model s
Externí odkaz:
http://arxiv.org/abs/2409.14663
Accurate positioning technology is the foundation for industry and business applications. Although indoor and outdoor positioning techniques have been well studied separately, positioning performance in the intermediate period of changing the positio
Externí odkaz:
http://arxiv.org/abs/2408.13823
Autor:
Peng Lin, Zhang Guohao
Publikováno v:
Dianzi Jishu Yingyong, Vol 45, Iss 3, Pp 1-6 (2019)
In order to meet the surging demand of mobile data traffic in the future, 5G communication system will adopt a more complex non-constant envelope modulation method, resulting in high peak-to-average power ratio(PAPR) of the transmitted signal, thus p
Externí odkaz:
https://doaj.org/article/d0cf537a15494ab29dd611d9ec218206
Publikováno v:
Dianzi Jishu Yingyong, Vol 45, Iss 1, Pp 19-22 (2019)
Aiming at overcoming the drawback that a conventional power divider can only operate at a fixed frequency and its odd harmonics, a miniaturized unequal power divider operating at 1 GHz and 2.2 GHz is presented. The miniaturization is achieved by real
Externí odkaz:
https://doaj.org/article/80b1df7e7ed8447b9b18c5da5c0397ab
Publikováno v:
Dianzi Jishu Yingyong, Vol 44, Iss 10, Pp 48-51 (2018)
This paper describes a distributed power amplifier(DA) which was developed using 0.25 μm GaAs pHEMT process. The process of its circuit design and optimization is presented in details. Gain flatness in the low frequency range of this DA has a signif
Externí odkaz:
https://doaj.org/article/bcac7f27b7c24e30a4f7a4501ede4358
Publikováno v:
Dianzi Jishu Yingyong, Vol 44, Iss 7, Pp 28-33 (2018)
The envelope tracking power amplifier(ETPA) has the advantages of high efficiency and high linearity, and has become the research hotspot of modern mobile communication technology. Envelope tracking power modulator is one of the key modules in ETPA b
Externí odkaz:
https://doaj.org/article/0a29b363d84d4e0f8e18fce56372ffb7
Publikováno v:
Dianzi Jishu Yingyong, Vol 44, Iss 7, Pp 42-45 (2018)
This paper presents a 802.11ac low-noise amplifier with bypass function integrated in 0.36 μm SiGe BiCMOS process. In order to meet the specifications of the criteria, the methods for optimizing noise, power gain and stability were given. In the cir
Externí odkaz:
https://doaj.org/article/3ff4ff36d3624619bf1b01a50bc59d20
Publikováno v:
Dianzi Jishu Yingyong, Vol 44, Iss 3, Pp 26-30 (2018)
Based on the structure of Gilbert，a 24 GHz up-conversion mixer was designed with three-piece balun circuit on-chip. Using the gm/I method to coordinate the transistor size to obtain better conversion gain, isolation degree and circuit dissipation p
Externí odkaz:
https://doaj.org/article/9697ac87924f488b8b544114043ab6a1
Autor:
Wu, Yanqing, Zhang, Guohao, Liu, Xuanye, Sun, Bin, Yang, Huan, Guo, Zheng, Fu, Guoqiang, Yi, Xiaoyang, Zhang, Shangzhou, Meng, Xianglong, Gao, Zhiyong, Wang, Haizhen
Publikováno v:
In Journal of Alloys and Compounds 5 January 2025 1010
Autor:
Liu, Dongyang, Zhang, Guohao, Kang, Xinsheng, Wu, Wenzhe, Zhao, Liang ⁎, Gao, Jinsen, Xu, Chunming
Publikováno v:
In Chinese Journal of Chemical Engineering January 2025 77:185-194