A Research Of Terahertz On-chip Antenna Based On Artificial Magnetic Conductor

The development of wireless communication technology in today's world has put forward greater requirements for data transmission.The terahertz frequency band has a lot of unused spectrum resources,and the transmission capacity is large,the speed is fast,so the research of terahertz communication has attracted extensive attention,and the research of terahertz antenna is the most important link of terahertz communication research.The on-chip antenna is designed to solve the terahertz communication system integrated transceiver problem.However,there are some problems such as band width,low radiation efficiency and low actual gain of antenna on terahertz chip.How to improve the performance of antenna on terahertz chip is an urgent problem to be solved.In this paper,artificial magnetic conductor(AMC)is used to enhance the performance of the antenna.The main research work and results of this paper are as follows:(1)The terahertz resonance characteristics of several AMC cell structures were simulated.Based on the central resonant frequency 340 GHz,the resonant characteristics of the electromagnetic tape gap structural element suitable for the construction of AMC array and the influence of the size variation of the structural element on the resonant characteristics were simulated,which laid a foundation for the construction of AMC array structure suitable for the application of THz antenna on chip.(2)The influence of loading AMC structure on Yagi antenna was studied.Firstly,the terahertz radiation performance of Yagi antenna on chip was studied,and the structural parameters were optimized.Because the AMC structure has a good inhibition effect on the surface wave,the bandwidth of the on-chip Yagi antenna is increased by2 GHz after loading the AMC structure,the actual gain is increased by about 0.3dB,and the sidelobe level is reduced by 2.3dB.The effect of the position of the antenna on the radiation performance is studied.It is found that the antenna placed in the front end of the chip can effectively reduce the influence of the medium and obtain better performance.The feasibility of terahertz interchip communication was explored.(3)The influence of loaded AMC structure on the radiance of dipole antenna is studied.The simulation results show that the actual gain of the half-wave dipole antenna with AMC structure reaches 5.35 dBi,which is increased by about 3.7dBi,and the sidelobe is also greatly reduced.The radiation characteristics of the folded dipole antenna with AMC structure are studied.It is found that the bandwidth of the antenna is extended to 20 GHz,and the radiation efficiency of the folded dipole antenna is improved to some extent,and the actual gain of the folded dipole antenna is increased about 1dB.Finally,the radiation characteristics of the on-chip monopole antenna loaded with snowflake dehole and hexagonal AMC structure are studied.After loading the AMC structure,the bandwidth of the antenna is extended by 31.3GHz,and the actual gain is improved by 0.7dB.