RTD太赫兹探测器与片上天线的匹配技术

Matching technology of resonant tunneling diode terahertz detector and on-chip antenna

摘要:

高信息传输速率和大带宽容量的太赫兹通信被认为是实现6G的关键技术，这需要高效、稳定和紧凑的太赫兹源和探测器。为提升探测性能，研究了一种共振隧穿二极管(RTD)与缝隙天线片上集成的准光式太赫兹探测器。针对电路的高频损耗和寄生效应问题，采用协同考虑阻抗匹配因子和天线辐射效率的设计准则，设计了0.67 THz的小偏压RTD偏馈式探测器。采用高频结构仿真器(HFSS)和先进设计系统(ADS)软件联合仿真表征其探测性能，当输入功率为-30 dBm时，该探测器在0.67 THz的电流灵敏度达2.349 A/W，相比微波段采用阻抗匹配因子最大的设计准则，灵敏度提升了28.01%。

Abstract:

Terahertz communication with high information transmission rate and large bandwidth capacity is considered as a key technology to achieve 6G communication, which requires efficient, stable and compact terahertz sources and detectors. In order to improve the detection performance, the quasi-optical terahertz detector based on integration of Resonant Tunneling Diode(RTD) and on-chip slot antenna is studied. Aiming at the problems of increased loss and parasitic effects of the circuit at high frequencies, a design criterion that jointly considers impedance match factor and antenna radiation efficiency is proposed, and a RTD detector at a small bias voltage is designed at 0.67 THz. The detection performance is characterized by co-simulating of High Frequency Structure Simulator(HFSS) and Advanced Design System(ADS). The current sensitivity of the detector at 0.67 THz is about 2.349 A/W at the input power of -30 dBm. Compared with the design scheme of maximizing impedance match factor at microwave frequencies, the sensitivity is increased by 28.01%.