In this review,the advanced microwave devices based on the integrated passive device(IPD)technology are expounded and discussed in detail,involving the performance breakthroughs and circuit innovations.Then,the develo...In this review,the advanced microwave devices based on the integrated passive device(IPD)technology are expounded and discussed in detail,involving the performance breakthroughs and circuit innovations.Then,the development trend of IPD-based multifunctional microwave circuits is predicted further by analyzing the current research hot spots.This paper discusses a distinctive research area for microwave circuits and mobile-terminal radio-frequency integrated chips.展开更多
The 3D simulation in preoperative design for nasal plastic surgery was studied to help patients see the postoperative effects and reduce medical disputes.The study developed and clinically tested an innovative design ...The 3D simulation in preoperative design for nasal plastic surgery was studied to help patients see the postoperative effects and reduce medical disputes.The study developed and clinically tested an innovative design for surgical guides for nasal plastic surgery,which showed positive results in patient satisfaction and accuracy in achieving the preoperative simulated effect.The study also investigated the process of designing and producing nasal prostheses and how patient feedback could be obtained using third-party social media voting.Patient satisfaction information was collected and evaluated using the Likert scale,and the data statistical analysis was carried out with the SPSS19.0 software.More than 94.1% of the patients were satisfied with the postoperative results.The study provides a good reference case for the integration of knowledge and skills from the medicine,design,and engineering fields in the development of medical devices.展开更多
基金Beijing Natural Science Foundation(No.JQ19018)National Natural Science Foundations of China(No.U20A20203 and No.61971052)National Special Support Program for High-Level Personnel Recruitment(No.2018RA2131)。
文摘In this review,the advanced microwave devices based on the integrated passive device(IPD)technology are expounded and discussed in detail,involving the performance breakthroughs and circuit innovations.Then,the development trend of IPD-based multifunctional microwave circuits is predicted further by analyzing the current research hot spots.This paper discusses a distinctive research area for microwave circuits and mobile-terminal radio-frequency integrated chips.
文摘The 3D simulation in preoperative design for nasal plastic surgery was studied to help patients see the postoperative effects and reduce medical disputes.The study developed and clinically tested an innovative design for surgical guides for nasal plastic surgery,which showed positive results in patient satisfaction and accuracy in achieving the preoperative simulated effect.The study also investigated the process of designing and producing nasal prostheses and how patient feedback could be obtained using third-party social media voting.Patient satisfaction information was collected and evaluated using the Likert scale,and the data statistical analysis was carried out with the SPSS19.0 software.More than 94.1% of the patients were satisfied with the postoperative results.The study provides a good reference case for the integration of knowledge and skills from the medicine,design,and engineering fields in the development of medical devices.
文摘提出了一种应用于第五代移动通信(5G)的四阶开口环谐振器耦合的带通滤波器。它可以在5G(37~42.5 GHz)频段上运行。滤波器的设计基于集成无源器件(IPD)工艺,运用了硅通孔(TSV)技术。实验结果表明,该滤波器的中心频率在39.75 GHz,带宽5.5 GHz,中心频率处的插入损耗小于1.2 d B,回波损耗大于23 d B,电压驻波比小于1.15,且滤波器的尺寸仅有1.2×1.2 mm2。可见,该滤波器具有尺寸小、插损小、带外抑制高等优点,且结构简单、加工成本低,特别适合5G频段的射频前端。
