@inproceedings{80e3aa61f56c4b54a874ef40ae3e780e,
title = "An Ultra-wideband Elliptical Bowtie Antenna with Depressed Bias for THz Vacuum Photomixers",
abstract = "In this paper, a novel ultra-wideband elliptical bowtie antenna with depressed bias is presented for the THz vacuum photomixer. The proposed antenna obtains a broad frequency bandwidth of 0.2-2 THz with a port reflection |S11| lower than -10 dB and a smoothly varied radiation resistance with an average value of 60Ω. Under the collimation by an extended hemispherical lens, its radiation gain covers a range of 7.0-16.7 dBi within the corresponding bandwidth. Besides, to decrease the electron collision with the isolator and meanwhile lower the energy of the collected electron, a depressed bias structure in the vacuum channel is employed: a ring-shaped gate structure with 20 V positive bias is placed in the middle to accelerate the electron and the other antenna arm connected to the anode is biased with a depressed voltage of 5 V to decelerate the accelerated photoelectrons from the gate. Due to the introduction of such a structure, the electron transmission rate has been increased from 69.8\% to 96.3\%.",
keywords = "Bowtie antenna, THz vacuum photomixer, depressed bias, ultra-wideband",
author = "Jujian Lin and Guoxiang Shu and Guangxin Lin and Qi Li and Jiawei Tang and Huaxing Pan and Cunjun Ruan and Wenlong He",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2023 ; Conference date: 10-11-2023 Through 13-11-2023",
year = "2023",
doi = "10.1109/CSRSWTC60855.2023.10427341",
language = "英语",
series = "Proceedings - 2023 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2023",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "Proceedings - 2023 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2023",
address = "美国",
}