PHOTOCONDUCTIVE ANTENNA ELEMENT

摘要

Disclosed is a photoconductive antenna element having a structure for eliminating deterioration of the element characteristics and for reducing the dimensions of the element at the same time. Specifically, a photoconductive antenna element (17) is provided with a pair of electrodes (21) formed on a semiconductor layer (19). Each electrode (21) is composed of an antenna section (22), a pad section (23) and a line section (24) for connecting the antenna section and the pad section. The line section (24) includes a parallel section (24a) which extends from the antenna section (22). In the line section (24) of one electrode (21), the portion other than that in an antenna region (A) is bent to the direction opposite to the other electrode (21), and in the line section (24) of the other electrode (21), the portion other than that in the antenna region (A) is also bent to the direction opposite to the one electrode (21). Thus, deterioration of the element characteristics of the photoconductive antenna element (17) is eliminated and the dimensions of the element are reduced at the same time.