Affiliation:
1. State Key Laboratory of Complex Electromagnetic Environmental Effects on Electronics and Information System, Luoyang 471003, China
2. School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China
3. School of Microelectronics, Tianjin University, Tianjin 300072, China
4. Qingdao Institute for Ocean Technology, Tianjin University, Qingdao 266200, China
Abstract
Multiband terahertz (THz) detectors show great application potential in imaging, spectroscopy, and sensing fields. Thermal detectors have become a promising choice because they could sense THz radiations on the whole spectrum. This paper demonstrates the operation principle, module designs with in-depth theoretical analysis, and experimental validation of a room-temperature CMOS monolithic resonant triple-band THz thermal detector. The detector, which consists of a compact triple-band octagonal ring antenna and a sensitive proportional to absolute temperature (PTAT) sensor, has virtues of room-temperature operation, low cost, easy integration, and mass production. Good experimental results are obtained at 0.91 THz, 2.58 THz, and 4.2 THz with maximum responsivities of 32.6 V/W, 43.2 V/W, and 40 V/W, respectively, as well as NEPs of 1.28 μW/Hz0.5, 2.19 μW/Hz0.5, and 2.37 μW/Hz0.5, respectively, providing great potential for multiband THz sensing and imaging systems.
Funder
State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System
China Postdoctoral Science Foundation
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering
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