Calculation of Qualification Gain for Terahertz Antennas

At present, terahertz (THz) technology is a hot research topic all over the world. As a key link of THz system, THz antenna has also attracted intense attentions. It is meaningful to recognize the qualification of the gain is good or bad for THz antenna in a specific environment. Under the same distance and transmission loss (TL), the requirements for THz antenna gain are calculated and analyzed with the microwave antenna (2.45GHz) as a reference based on the free space transmission loss model. This paper can offer a kind of method to judge the qualification of the gain for the THz antenna. In the wireless communication system, the gain of antennas is required for a definite infimum in a specific environment generally, various types of antennas are selected to meet the certain requirement for gain. This paper emphatically studies the gain of THz antenna, it is not limited to a specific antenna model, it is suitable for any antenna model.