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[期刊论文] 作者：CAI PingPingt,FU JingLi,GUO Yo,
来源：中国科学：物理学、力学、天文学英文版 年份：2013
In this paper we give a new method to investigate Noether symmetries and conservation laws of nonconservative and nonholonomic mechanical systems on time scales...
A compact ultra-wideband crossed-dipole antenna for 2G/3G/4G/IMT/5G customer premise equipment appli
[期刊论文] 作者：Jingli GUO,Lun CUI,Ying LIU,Baohua SUN,Xiaofeng LI,
来源：信息与电子工程前沿（英文版） 年份：2022
1 IntroductionrnA compact ultra-wideband crossed-dipole an-tenna is proposed for 2G/3G/4G/IMT/5G customer premise equipment (CPE) applications. The arms of the crossed-dipole antenna are formed by step-shaped patches, and a wideband operati......
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