A Comparison of the Performance of THz Photoconductive Antennas

被引：14
|
作者：
Moreno, E. [1 ]
Pantoja, M. F. [1 ]
Bretones, A. R. [1 ]
Ruiz-Cabello, M. [1 ]
Garcia, S. G. [1 ]
机构：
[1] Univ Granada, Dept Electromagnetism & Matter Phys, E-18071 Granada, Spain
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷
关键词：
Photoconductive antennas; terahertz technology; TERAHERTZ; FUTURE; GAAS; GENERATION; POWER; TIME;
D O I：
10.1109/LAWP.2014.2314260
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter explores the influence of the geometry of bias electrodes in the performance of terahertz (THz) photoconductive antennas (PCAs). To this end, a methodology is presented to calculate numerically the operational bandwidth and radiation efficiency of the PCAs. The procedure is validated through a comparison to experimental measurements. Also, results are depicted from numerical simulations of different PCAs under varying conditions of bias voltage, doping factor, and incident optical power. It is concluded that an appropriate configuration of the electrodes may double the efficiency of the antennas, with a penalty in the bandwidth of the radiated pulse usually smaller than 10%.
引用
收藏
页码：682 / 685
页数：4
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