https://scholar.dgist.ac.kr/handle/20.500.11750/46317 Sat, 04 Apr 2026 15:18:04 GMT 2026-04-04T15:18:04Z https://scholar.dgist.ac.kr/handle/20.500.11750/57859 Title: A 97dB-PSRR 178.4dB-FOMDR Calibration-Free VCO−ΔΣ ADC Using a PVT-Insensitive Frequency-Locked Differential Regulation Scheme for Multi-Channel ExG Acquisition Author(s): Lee, Sehwan; Seol, Taeryoung; Kim, Geunha; Song, Minyoung; Kim, Gain; Yoon, Jong-Hyeok; George, Arup K.; Lee, Junghyup Abstract: This paper proposes a 97dB-PSRR, 178.4dB-FOMDR calibration-free 16-channel VCO-ΔΣ ADC system using a PVT-insensitive frequency-locked differential regulation (FLDR) scheme suitable for wireless ExG Acquisition. Thanks to the FLDR, the SNDR degradation in all 16 channels is less than 1dB over 1.4-2V supply and 20-60°C temperature ranges. Implemented in a 0.18μm standard CMOS process, the proposed system consumes 172μW from a 1.4V supply and occupies 2.7mm2 active area, while a single channel consumes 4.2μW and 0.12mm2, respectively. © 2024 IEEE. Mon, 17 Jun 2024 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/57859 2024-06-17T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/57275 Title: BEE-SLAM: A 65nm 17.96 TOPS/W 97.55%-Sparse-Activity Hybrid Mixed-Signal/Digital Multi-Agent Neuromorphic SLAM Accelerator for Swarm Robotics Author(s): Lee, Jaehyun; Choi, Dong-gu; Song, Minyoung; Kim, Gain; Yoon, Jong-Hyeok Abstract: Multi-agent (MA) AI holds great promise for enhancing edge devices with limited computing resources [1]. In particular, MA simultaneous localization and mapping (SLAM) is actively under investigation to improve map accuracy in swarm robotics. Conventional keyframe-based SLAM, leveraging landmarks [2]-[4], provides the appropriate map accuracy but is unsuitable for MA SLAM on decentralized edge devices due to computational complexity. The neuromorphic SLAM is a candidate for MA SLAM owing to its low complexity in singleagent operation [5]. However, this method is still infeasible in MA SLAM due to the drastic increase of complexity in MA map correction. As such, several challenges need to be addressed via circuit-algorithm co-design in deploying MA SLAM to edge devices. In this paper, we present the BEE-SLAM accelerator, inspired by bee communication, featuring hybrid mixed-signal/digital biomimetic circuits and MA map error correction (MAEC), achieving the energy efficiency of 17.96 TOPS/W in outdoor MA SLAM operation. © 2024 IEEE. Mon, 22 Apr 2024 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/57275 2024-04-22T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/47934 Title: A UWB Pulse with Precursor for ToA Measurement Author(s): Marshall, Chris; Allebes, Erwin; Sheikh, Alireza; Song, Minyoung; El Soussi, Mohieddine; Winkel, Nick Abstract: The leading edge of a transmitted pulse shape plays an important role in the estimation of the Time of Arrival (ToA) of the pulse by a receiver. This is particularly the case for indoor, multipath environments, in which the trailing edge and to some extent the peak of the pulse may well be corrupted by following multipath components. It is therefore proposed that an asymmetric Ultra-Wide Band (UWB) pulse shape is used with a steep leading edge, generated by a modest precursor pulse with the opposite carrier phase to improve close-in multipath robustness. An integrated circuit implementation and experiments show such a pulse can meet the spectrum mask and improve the ToA measurement performance. © 2023 IEEE. Sun, 24 Sep 2023 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/47934 2023-09-24T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/46371 Title: Design of a Miniature Smart Pill Antenna Author(s): Visser, Hubregt J.; Huismans, Esmee; Song, Minyoung; Liu, Yao-Hong Abstract: A design process for miniature implant antennas is applied to design a 3.4 x 10 mm2antenna operating in MedBand (401 - 406 MHz). First experiments with a simplified prototype antenna indicate the correctness of the approach, as well as the practical applicability, through the found values for the realized gain. © 2022 European Microwave Association. Mon, 05 Apr 2021 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/46371 2021-04-05T15:00:00Z