宽阻带小型化低通滤波器的设计

This paper presents a novel low-pass filter （LPF） with sharp rejection, wide stopband and compact size, which are realized by the defected ground structure （DGS） and the defected microstrip structure （DMS）. The equivalent circuit model is proposed and the circuit parameters are extracted by the circuit simulation software. The parameters measured are 3 dB cutoff frequency fc of 5.2 GHz, the insertion loss less than 0.5 dB from DC to 4.0 GHz and S21 less than -20 dB within the wide stopband from 6 GHz to 16 GHz. The results of the circuit optimization agree well with those of the full wave simulation and the measured ones, which validate the effectiveness of the equivalent circuit model. The size of the proposed LPF is decreased compared with normal LPF. This LPF can be applied in rectennas to eliminate high order harmonics.     

“四有教师”标准下课程思政建设的探索与实践——以“幼儿园课程理论与实践”课程为例

“课程思政”是新时代高校育德育才的新模式。以学前教育专业课程“幼儿园课程理论与实践”为例,在“四有教师”标准的视域下,从建构课程目标体系、内容体系、德育体系、实施方法、评价体系五个方面探索课程思政的建设策略,形成“四有五育,自树树人”的课程思政模式,呼吁思政教育要关注学生主体意识的培养。     

“互联网+教育”视角下航线设计项目教学探析

响应“互联网+教育”的发展趋势,结合高等职业教育特色,采用信息化教学与项目化教学相结合的方式,组织学生借助“航线设计能力训练网站”,模拟航线设计的工作过程,提高了学生的专业技能与信息化技术应用水平.