Mau-Chung Frank Chang
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View article: Water Hunting Advanced Terahertz Spectrometer on an Ultra-Small Platform (WHATSUP)
Water Hunting Advanced Terahertz Spectrometer on an Ultra-Small Platform (WHATSUP) Open
The search for extraterrestrial bio-signatures and the origin of Earth’s water remain two of the most compelling questions in planetary science. While no direct evidence of life beyond Earth has been found, water is a key prerequisite for …
View article: Optimization of NoN-melt-back-etching and selectivity for selective area growth of GaN drain on Si (100) substrate
Optimization of NoN-melt-back-etching and selectivity for selective area growth of GaN drain on Si (100) substrate Open
This work explores the dual-step epitaxial GaN (DSE-GaN) process for the selective area growth of GaN drains on Si (100) substrates, addressing critical challenges in melt-back etching and regrowth selectivity. The DSE-GaN process combines…
View article: Strained-channel Si n-MOSFET with GaN-drain via dual-step selective epitaxy for mobility enhancement on Si(100) substrate
Strained-channel Si n-MOSFET with GaN-drain via dual-step selective epitaxy for mobility enhancement on Si(100) substrate Open
This work explores the integration of strained-channel silicon n-MOSFET with GaN drain using the dual-step selective area epitaxial growth of GaN process, enabling CMOS-compatible, fully selective GaN growth with an excellent GaN/Si interf…
View article: SAT-Accel: A Modern SAT Solver on a FPGA
SAT-Accel: A Modern SAT Solver on a FPGA Open
View article: A Review of Circuits and Systems for Advanced Sub-THz Transceivers in Wireless Communication
A Review of Circuits and Systems for Advanced Sub-THz Transceivers in Wireless Communication Open
Sub-terahertz (sub-THz) frequencies (100–300 GHz) are gaining prominence in the development of next-generation wireless communication systems, promising ultra-high data rates and wide bandwidths essential for applications like 6G networks …
View article: Beyond Turn-taking: Introducing Text-based Overlap into Human-LLM Interactions
Beyond Turn-taking: Introducing Text-based Overlap into Human-LLM Interactions Open
Traditional text-based human-AI interactions often adhere to a strict turn-taking approach. In this research, we propose a novel approach that incorporates overlapping messages, mirroring natural human conversations. Through a formative st…
View article: Multiphysics Modeling on Photoconductive Antennas for Terahertz Applications
Multiphysics Modeling on Photoconductive Antennas for Terahertz Applications Open
Terahertz lies at the juncture between RF and optical electromagnetism, serving as a transition from mm-Wave to infrared photonics. Terahertz technology has been used for industrial quality control, security imaging, and high-speed communi…
View article: A UAV Based CMOS Ku-Band Metasurface FMCW Radar System for Low-Altitude Snowpack Sensing
A UAV Based CMOS Ku-Band Metasurface FMCW Radar System for Low-Altitude Snowpack Sensing Open
This article presents development of a UAV based frequency modulated continuous wave (FMCW) radar system for remotely sensing the water contained within snowpacks. To make the radar system compatible with the payload requirements of small …
View article: Dual-band Fourier-transform Millimeter-wave Spectrometry for In Situ Gas Sensing
Dual-band Fourier-transform Millimeter-wave Spectrometry for In Situ Gas Sensing Open
The exploration of icy body composition in the solar system has often involved spectroscopic measurements of volatiles detected with remote sensing, such measurements portray materials naturally expelled from the surface that enter the exo…
View article: CMOS System-on-Chip Spectrometer Processors for Spaceborne Microwave-to-THz Earth and Planetary Science and Radioastronomy
CMOS System-on-Chip Spectrometer Processors for Spaceborne Microwave-to-THz Earth and Planetary Science and Radioastronomy Open
This article presents development of CMOS system-on-chip spectrometer processor for Spaceborne Earth Science, Planetary Science and Astronomy. The developed chip is intended for use in rotational emission spectroscopy observations from mic…
View article: TopSort: A High-Performance Two-Phase Sorting Accelerator Optimized on HBM-based FPGAs
TopSort: A High-Performance Two-Phase Sorting Accelerator Optimized on HBM-based FPGAs Open
The emergence of high-bandwidth memory (HBM) brings new opportunities to boost the performance of sorting acceleration on FPGAs, which was conventionally bounded by the available off-chip memory bandwidth. However, it is nontrivial for des…
View article: Characterization of Programmable Charge-Trap Transistors (CTTs) in Standard 28-nm CMOS for Nonvolatile Memory and Analog Arithmetic Applications
Characterization of Programmable Charge-Trap Transistors (CTTs) in Standard 28-nm CMOS for Nonvolatile Memory and Analog Arithmetic Applications Open
In this article, we characterized the charge trapping and detrapping behaviors of charge-trap transistors (CTTs) in standard 28-nm CMOS technology and formulated its programmable threshold voltage (). Both thin-oxide and thick-oxide CTT de…
View article: Sub-Orbital Flight Demonstration of a 183/540–600 GHz Hybrid CMOS-InP and CMOS-Schottky-MEMS Limb-Sounder
Sub-Orbital Flight Demonstration of a 183/540–600 GHz Hybrid CMOS-InP and CMOS-Schottky-MEMS Limb-Sounder Open
This paper presents an overview of a sub-orbital flight demonstration with a 183 GHz and 540–600 GHz limb-sounding instrument aboard a stratospheric ballooncraft. The 183 GHz band provides soundings of stratospheric H 2 O and is implemente…
View article: A 7.5-mW 10-Gb/s 16-QAM wireline transceiver with carrier synchronization and threshold calibration for mobile inter-chip communications in 16-nm FinFET
A 7.5-mW 10-Gb/s 16-QAM wireline transceiver with carrier synchronization and threshold calibration for mobile inter-chip communications in 16-nm FinFET Open
A compact energy-efficient 16-QAM wireline transceiver with carrier synchronization and threshold calibration is proposed to leverage high-density fine-pitch interconnects. Utilizing frequency-division multiplexing, the transceiver transfe…
View article: DEMONSTRATION OF A 180 GHZ FULL CMOS SPECTRALLY DISPERSED HETERODYNE RADIOMETER WITH InP LNA FOR REMOTE SENSING
DEMONSTRATION OF A 180 GHZ FULL CMOS SPECTRALLY DISPERSED HETERODYNE RADIOMETER WITH InP LNA FOR REMOTE SENSING Open
Widespread deployment (both ground-based and spaceborne) of millimeter/submillimeter radiometers for composition specific atmospheric retrievals has been hindered by the cost, complexity, and power requirements traditionally associated wit…
View article: 2018 IEEE Educational Activities Board Awards
2018 IEEE Educational Activities Board Awards Open
THE 2018 IEEE Educational Activities Board (EAB), chaired by IEEE Educational Activities Vice President Witold Kinsner, upon the recommendation of the EAB Awards and Recognition Committee (ARC) has named the recipients of the 2018 IEEE EAB…
View article: PULSE-ECHO MILLIMETER WAVE IN SITU SENSOR WITH 65 nm CMOS TRANSMITTER AND HETERODYNE RECEIVER ELECTRONICS
PULSE-ECHO MILLIMETER WAVE IN SITU SENSOR WITH 65 nm CMOS TRANSMITTER AND HETERODYNE RECEIVER ELECTRONICS Open
\\begin{wrapfigure}{l}{0pt} \n\n\\includegraphics[scale=0.2]{Specchip_ISMS2018_DJN.eps} \n\n\\end{wrapfigure}\n\n\n\nCavity enhanced pure rotational spectroscopy has long been a potent laboratory tool for the elucidation of structure and d…
View article: Evaluating the Performance of Augmented Reality in Displaying 3D Holographic Models Derived from MR Techniques
Evaluating the Performance of Augmented Reality in Displaying 3D Holographic Models Derived from MR Techniques Open
Objective: The primary objective of this study is to investigate the performance of augmented reality (AR) in representing and displaying 3D holographic models derived from 3D MR acquisitions. In addition, the existing picture archiving an…
View article: Millimeter-Wave Field Experiments with Many Antenna Configurations for Indoor Multipath Environments
Millimeter-Wave Field Experiments with Many Antenna Configurations for Indoor Multipath Environments Open
Next-generation wireless networks, such as 5G networks, will use millimeter waves (mmWaves) operating at 28 GHz, 38 GHz, 60 GHz, or higher frequencies to deliver unprecedentedly high data rates, e.g., 10 gigabits per second. Due to high at…
View article: An Analog Neural Network Computing Engine using CMOS-Compatible Charge-Trap-Transistor (CTT)
An Analog Neural Network Computing Engine using CMOS-Compatible Charge-Trap-Transistor (CTT) Open
An analog neural network computing engine based on CMOS-compatible charge-trap transistor (CTT) is proposed in this paper. CTT devices are used as analog multipliers. Compared to digital multipliers, CTT-based analog multiplier shows signi…
View article: A Streaming Accelerator for Deep Convolutional Neural Networks with Image and Feature Decomposition for Resource-limited System Applications
A Streaming Accelerator for Deep Convolutional Neural Networks with Image and Feature Decomposition for Resource-limited System Applications Open
Deep convolutional neural networks (CNN) are widely used in modern artificial intelligence (AI) and smart vision systems but also limited by computation latency, throughput, and energy efficiency on a resource-limited scenario, such as mob…
View article: A Reconfigurable Streaming Deep Convolutional Neural Network Accelerator for Internet of Things
A Reconfigurable Streaming Deep Convolutional Neural Network Accelerator for Internet of Things Open
Convolutional neural network (CNN) offers significant accuracy in image detection. To implement image detection using CNN in the internet of things (IoT) devices, a streaming hardware accelerator is proposed. The proposed accelerator optim…