A5101687670- Photonic and Optical Devices
- Microwave Engineering and Waveguides
- Advancements in PLL and VCO Technologies
- Radio Frequency Integrated Circuit Design
- Mechanical and Optical Resonators
- Advanced Wireless Communication Technologies
- Indoor and Outdoor Localization Technologies
- Advanced Fiber Laser Technologies
- Analytical Chemistry and Sensors
- UAV Applications and Optimization
- Advanced MIMO Systems Optimization
- Optical Coatings and Gratings
- Advanced Photonic Communication Systems
- Enzyme Structure and Function
- Advanced Antenna and Metasurface Technologies
- Video Coding and Compression Technologies
- Advanced Steganography and Watermarking Techniques
- Digital Media Forensic Detection
- Antenna Design and Analysis
- Semiconductor materials and interfaces
- Non-Invasive Vital Sign Monitoring
- Advanced Fiber Optic Sensors
- Gait Recognition and Analysis
- Protein Structure and Dynamics
- Silicon and Solar Cell Technologies
National Chung Cheng University
2023-2024
University of Maryland, College Park
2023
National Taiwan University of Science and Technology
2023
National Chi Nan University
2008-2009
National Yang Ming Chiao Tung University
2008
In this work, we present a polarization-independent arrayed waveguide grating (AWG) spectrometer. By splitting the two orthogonal polarization portions in fiber system, then processing and merging these with an on-chip multi-input AWG, can demultiplex arbitrary polarized signal. Under case where powers of polarizations are close (50% TE/50% TM), spectrometer divides signal into eight channels insertion loss 2.2 dB resolving power 2800. We also discuss relationship between channel profile...
In this work, we present a polarization-independent arrayed waveguide grating (AWG) spectrometer. By splitting the two orthogonal polarization portions in fiber system, then processing and merging these with an on-chip multi-input AWG, can demultiplex arbitrary polarized signal. Under case where powers of polarizations are close (50% TE/50% TM), spectrometer divides signal into eight channels insertion loss 2.2 dB resolving power 2800. We also discuss relationship between channel profile...
Fall detection has become a popular research topic in recent years due to the fact that falls can cause serious injuries. Most existing fall systems rely on wearable devices or image recognition technology. However, these approaches possess limitations. For instance, most people take off during showers, while cameras with raise privacy concerns. To overcome challenges, this study proposes novel approach using 60-GHz radar develop system. We collected raw data from frequency-modulated...
Abstract Recently, we have developed a method (Shih et al., Proteins: Structure, Function, and Bioinformatics 2007;68: 34–38) to compute correlation of fluctuations proteins. This method, referred as the protein fixed‐point (PFP) model, is based on positional vectors atoms issuing from fixed point, which point least in One corollary this model that lying same shell centered at will thermal fluctuations. In practice, provides convenient way average dynamical properties proteins directly...
A low-power and wide-locking-range 55.8-GHz (V-band) injection-locked frequency-divider (ILFD) using standard 0.13 mum CMOS technology is reported. To enhance locking range, a shunt inductor was introduced in the source node of cross-coupled pair to maximize equivalent load impedance tail transistor, i.e. internal power, over frequency band interest. In addition, inductors capacitors LC-tank were implemented by low-Q micro-stripline high-Q varactors, respectively, further improve range ILFD....
Abstract A low‐power 63‐GHz (V‐band) direct injection‐locked frequency‐divider (ILFD) using standard 0.13‐μm CMOS technology is reported. To reduce power consumption and enhance locking range, a PMOS switch directly coupled to the LC tank (output) of ILFD used replace traditional tail transistor for injection path. This architecture also features very low input capacitance; thus, high operating frequency 63 GHz can be achieved. consumes 5.79 mW with range 1.86 (61.24–63.1 GHz). The chip area...
An arrayed waveguide grating with spiral reusable delay lines (SRDL-AWGs) a resolving power of 111,330 is experimentally demonstrated. The device over 100 times more compact than the traditional AWGs.
Abstract A 58‐GHz (V‐band) CMOS direct injection‐locked frequency‐divider (DILFD) using input‐power‐matching technique for locking‐range enhancement is reported the first time. In an technique, inductive input‐matching‐network added to gate of NMOS switch optimize input‐power‐matching, i.e. maximize internal power, over frequency band interest. This DILFD architecture also features a very low input capacitance; therefore, high operating 58.2 GHz can be achieved. The dissipated 8.45 mW power...
To investigate the deployment methodology of reconfigurable intelligent surface (RIS) in an indoor scenario, a technique incorporating RIS into ray-tracing simulation is studied. In this work, effects deploying environment are thoroughly considered by skillfully embedding simulated radiation field pattern raytracing simulator. Depending on demanded power density distribution target environment, RISs can be configured adjusting electrical characteristics and setups such as incident angles,...
In this paper, we present the design, optimization, and implementation of a sub-wavelength grating (SWG) multi-mode interference coupler (MMI) on silicon nitride photonic integrated circuit (PIC) platform with significantly enhanced bandwidth compared to conventional MMI. We demonstrate extension SWG MMI theory, previously presented for silicon-on-insulator platform, Si3N4/SiO2 platform. Our approach involves an initial parameter optimization non-paired followed by shift paired design that...
Arrayed waveguide gratings with spiral reusable delay lines (SRDL-AWG) are demonstrated as high resolving power, throughput, and highly compact integrated photonics spectrometers. SRDL-AWG a throughput of 22% power 102,920 is experimentally demonstrated.
This paper presents a millimeter-wave antennain-packaged (AiP) transceiver array for multi-user multiple-input-multiple-output (MU-MIMO) wireless communication. AiP beamforming is composed of 1x4 antenna and four CMOS RF front-ends, where the chips are integrated with multilayer-organic substrates. The made by yagi-dipole antennas 90 nm front-ends include a) an up-conversion mixer driver amplifier, b) low-noise amplifier (LNA) down-conversion mixer, c) frequency doubler sub-harmonically...