Substrate Effects on the Performance of Photoconductive Antennas
Photoconductive antennas are one of the common emitters and receivers in THz applications and measurements. However, the performance of the THz photoconductive antennas is strongly affected by the substrate due to their working frequency range which is not as severe for antennas working in the RF/Microwave spectrum. In this paper, an analytical and numerical study is conducted to identify the substrate effects. Since there have been some papers dealing with the infinitely large substrate effects, this paper focused on the semi finite-size-substrate effects. The obtained results indicate that the radiated power to air and that through the substrate have some periodic behaviour. The peaks and dips of the power in both sides are related to the wavelength and thickness of the substrate. Some simulated results are also included to prove the theory. These findings can aid in design of efficient photoconductive antennas.
Neda Khiabani Yi Huang Yao-Chun Shen Di Li Stephen J Boyes
Department of Electrical Engineering and Electronics, University of Liverpool, L69 3GJ, UK
国际会议
The 3rd China-Europe Workshop on Millimetre Waves and Terahertz Technologies(第三届中欧毫米波与太赫兹技术研讨会)
北京
英文
85-89
2010-09-23（万方平台首次上网日期，不代表论文的发表时间）