A new approach to parameter extraction for equivalent circuit model of Terahertz antenna

This paper first reviews the current research situation and the history of the development of the antennas for terahertz applications. A new approach to parameter extraction for equivalent circuit model of terahertz feedhorn, which is the key point of this paper, is later proposed. By using this method, the model parameters can be extracted with high precision and more efficiently than the current method of parameter sweep by EDA tools, especially over a wide frequency band. The model based on this approach is in close agreement with the electromagnetic simulation of the antenna presented in this paper in terahertz band of 1.2–1.3 THz.