A 140GHz terahertz modulator based on a fin line structure

In this paper, a modulator based on a fin line structure is designed to change the electric state of the diode switch, It uses differential voltage to realize the on-off of the terahertz wave, to implement the modulation of the terahertz signal. It can be achieved in a 140GHz band, the modulation depth of more than 20dB, bandwidth up to 15GHz.