Research on Response Frequency Tuning of Terahertz Focal Plane Arrays Detector

This paper proposes a resonant frequency tuning method for FPAs detector by attaching extra frequency adjustment compensation plates. Thickness optimized SiC-plates are introduced to tune the response frequency of GaN HEMT based FPAs detector. Through theoretical analysis, full-wave simulation and experimental measurement, it is verified the proposed method can effectively regulate the resonant frequency and bring it back to the design target, so as to improve the performance of the detector.