Kim Da-Jin, Jo Eon-Seok, Cho Young-Kyun, Hur Jae, Kim Choong-Ki, Kim Cheol Ho, Park Bonghyuk, Kim Dongho, Choi Yang-Kyu
School of Electrical Engineering, Korea Advanced Institute of Science and Technology, (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
Department of Electrical Engineering, Sejong University, 209 Neungdong-ro, Seoul, 05006, Republic of Korea.
Sci Rep. 2018 Oct 9;8(1):14996. doi: 10.1038/s41598-018-33278-1.
A frequency reconfigurable dipole antenna based on a silicon radiator is presented. The silicon radiator is activated with the aid of highly dense solid-state plasma by injecting carriers into the intrinsic region of p-i-n diodes. The fabrication and design guideline of the reconfigurable dipole antenna with this plasma radiator are described. When the plasma radiator is activated or deactivated, the length of the dipole arm changes, which means that the operating frequency of the dipole antenna is reconfigurable. When all the channels in the plasma radiator are activated, the operating frequency is tuned from 6.3 GHz to 4.9 GHz. The measured tunable bandwidth of our fabricated dipole antenna is approximately 31%, which is a practical value in comparison to conventional frequency reconfigurable antennas whose tunable bandwidth is in a range from 20% to 50%. To further support the validity of our results, we provide the well-matched simulation results from an antenna simulation. These results demonstrate that silicon with its commercial technology, which has not attracted attention in comparison to a metal antennas, is a promising tunable material for a frequency reconfigurable antenna. This plasma-based reconfigurable antenna has great potential for use in the dynamic communication environment.
本文提出了一种基于硅辐射器的频率可重构偶极天线。通过向p-i-n二极管的本征区注入载流子，利用高密度固态等离子体激活硅辐射器。描述了采用这种等离子体辐射器的可重构偶极天线的制造和设计准则。当等离子体辐射器被激活或去激活时，偶极臂的长度会发生变化，这意味着偶极天线的工作频率是可重构的。当等离子体辐射器中的所有通道都被激活时，工作频率从6.3 GHz调谐到4.9 GHz。我们制造的偶极天线的实测可调带宽约为31%，与可调带宽在20%至50%范围内的传统频率可重构天线相比，这是一个实用的值。为了进一步支持我们结果的有效性，我们提供了天线模拟中匹配良好的模拟结果。这些结果表明，与金属天线相比未受到关注的具有商业技术的硅，是一种用于频率可重构天线的有前景的可调材料。这种基于等离子体的可重构天线在动态通信环境中具有巨大的应用潜力。
