The Terahertz (THz) science and technology is a new research area, in which the key technology is the generation of THz waves. Nowadays the photoconductive antenna is one of the most important ways to generate THz waves. The geometry of a photoconductive antenna is very significant for its efficiency, directionality, bandwidth, etc in the Terahertz band. So it is necessary to make a comprehensive review about the geometry and the research progress of photoconductive Terahertz antenna. The purpose of this review is not only to analyze the existing problems and the possible solutions, but also to discuss the future direction of photoconductive Terahertz antenna.%太赫兹科学技术是一门新学科,其关键技术是太赫兹波的产生.光电导天线是目前产生宽频带太赫兹波最重要的方法之一.光电导天线的几何结构对提高天线在太赫兹频段的效率、方向性、带宽等都非常重要.因此有必要对光电导太赫兹天线的各种几何结构和国内外研究进展做较为全面的评述,对其中存在的问题和解决思路进行分析,对未来研究发展的方向进行探讨.
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