A 196-to-254-GHz Slot-Array Coupled Detector Using Process-Invariant Pseudo Resistor Technique

2026-06-30 Hits:

Affiliation of Author(s):University of Electronic Science and Technology of China (UESTC)

Journal:IEEE Microwave and Wireless Technology Letters (MWTL)

Place of Publication:USA

Key Words:Pseudo resistor (PR), slot array coupler (SAC), terahertz (THz) detector, variable gain amplifier

Abstract:This letter presents a compact slot-array coupled terahertz (THz) detector achieving a high baseband responsivity of 10 MV/W. The core circuit of the THz detector is based on the principle of square-law detection and realized by a common-source structure. In order to reduce the impact of process variation, a novel bias scheme for pseudo resistor (PR) is proposed to stabilize the baseband bandwidth. A slot-array coupler is employed to extract the THz signal from waveguide for measurement requirement. Fabricated in a 65-nm CMOS process, the proposed detector demonstrates effective detection.

Note:https://ieeexplore.ieee.org/document/10976250

All the Authors:Peilin Lv,Huihua Liu,Yunqiu Wu,Cheng Wang,Qingsong Bai,Shang Ma,Jianhao Hu

First Author:Qingfan Zeng

Indexed by:Journal

Correspondence Author:Yiming Yu,Kai Kang

Document Code:10.1109/LMWT.2025.3558285

Discipline:Engineering

First-Level Discipline:Electronic science and technology

Volume:35

Issue:7

Page Number:1057-1060

Translation or Not:no

Date of Publication:2025-07-01

Date of Publication:2025-07-01