A5102929760- Antenna Design and Analysis
- Advancements in PLL and VCO Technologies
- Photonic and Optical Devices
- Microwave Engineering and Waveguides
- Optical Network Technologies
- Particle Accelerators and Free-Electron Lasers
- Analog and Mixed-Signal Circuit Design
- Superconducting Materials and Applications
- Advanced Antenna and Metasurface Technologies
- Particle accelerators and beam dynamics
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Electromagnetic Compatibility and Noise Suppression
- Advanced Photonic Communication Systems
- Radio Frequency Integrated Circuit Design
- Antenna Design and Optimization
- Conducting polymers and applications
- Advanced Measurement and Detection Methods
- Electronic Packaging and Soldering Technologies
- Advanced Control Systems Design
- Chalcogenide Semiconductor Thin Films
- Distributed and Parallel Computing Systems
- Magnetic Bearings and Levitation Dynamics
- Organic Electronics and Photovoltaics
- Advanced Adaptive Filtering Techniques
National Central University
2004-2025
Huawei Technologies (United Kingdom)
2021
National Changhua University of Education
2016-2017
National Sun Yat-sen University
2012-2013
National Formosa University
2010
National Chung Hsing University
2007-2010
Advanced Semiconductor Engineering (Taiwan)
2004-2005
A design for arrays with beam-steering capability in the azimuthal plane is described. The array a four-sector antenna configuration, and each sector element can generate unidirectional radiation circular polarization (CP). reconfigurable 1×4 power divider broadband operation designed used to excite elements. By controlling PIN diodes, offer 11 states four outputs, state corresponding one CP pattern of array. Prototypes tunable are, respectively, constructed, experimental results integrated...
Hole-transporting layer (HTL) is one of the key components in a regular perovskite solar cell (r-PSC), which has function extracting photon-excited holes from absorber and then transporting them to electrode. The most commonly used HTL r-PSC LiTFSI tBP-doped spiro-OMeTAD. inevitable instability induced by deliquescent inorganic salt (LiTFSI), migration small lithium ions, necessary oxidation process air hinder commercialization this technology. In paper, new undoped D–A copolymer (P15) as...
Small-radius microring resonators with large free spectral range (FSR) are of great interest for optical communication and interconnect applications. The resonator loss a waveguide-coupled ring resonator, if the gap width between bus waveguide is extremely small, can be significantly influenced by coupling which corresponds to operated in strong regime. This effect particularly prominent small radius microrings. We have studied respect on both experimentally theoretically, using...
This paper presents the realization of a microbrushless dc motor (MBDCM) feedback system based on real-coded structural genetic algorithm (RSGA), which combines advantages conventional real algorithms and structured for optimal control design. In RSGA, dynamic crossover mutation probability adjusting method mimicking characteristics Butterworth filters is proposed to enhance search performance. A SinCos encoder with line drive 128 sin/cos signals per revolution implemented achieve precise...
A high-speed wide-range all-digital delay-locked loop (ADDLL) suitable for double data rate (DDR1)–DDR5 applications is proposed. The proposed architecture combines the advantages of synchronous mirror delay and (DLL), which can solve dynamic tracking problem without requiring a long locking time. In addition, operating range aforementioned extended through harmonic detection autocalibration technologies. For verification, an experimental chip was fabricated using 90-nm standard CMOS process...
In this paper, we will implement a 4/2 PAM transmitter of the high-speed data serial link over cable and demonstrate new development pre-emphasis circuit. The overall circuit is implemented in TSMC 0.18/spl mu/m P6M 1.8V CMOS process. performance transceiver can reach 20/10 Gbps 1-5 meter long cable.
This paper presents an all-digital delay-locked loop (ADDLL) with wide operating range for double data rate synchronous dynamic random access memory (DDR SDRAM) application. To avoid the quadrature phase error caused by harmonic lock, proposed auto-calibrated edge detector (ACED) utilizes novel lock detection technique and auto-calibration to extend range. verify, circuit was fabricated using 90-nm standard CMOS process a 1-V supply voltage. The core area is 0.089 mm <sup...
A design for beamwidth reconfigurable antennas is described. The antenna structure mainly composed of dual coplanar slotted-patch fed with a power divider, metallic reflector, and several PIN diodes. By controlling the states diodes, operation can be switched between slot mode monopole mode, two modes respectively generate unidirectional radiations narrow wide beamwidth. Accordingly, prototype constructed, experimental results show that operating 2.15 2.53 GHz offer broadside H-plane half...
This paper proposes a real structured genetic algorithm (RSGA) to design class of infinite-impulse response (IIR) digital filters. The method combines the (RGA) with (SGA) obtain an optimal IIR filter by minimizing filter's order and absolute sum error both passband stopband. With proposed chromosome scheme, system structure numerical parametric variables can be simultaneously optimized. Numerical experiments show that our RSGA yields better than existing GA-based method.
A design for beam steering antenna arrays is described. The radiating element of the array mainly composed dual coplanar slotted-patch antennas, a metallic reflector, and several PIN diodes embedded in slots. By controlling states diodes, operation antennas can be switched among three modes. These modes generate radiation beams respectively directed to ϕ = 0°, 40°, −40° H-plane. On basis pattern reconfigurable element, three-sector triangular operated at 2.2 GHz developed. measured results...
Taiwan Photon Source (TPS) is a new 3-GeV ring under construction at NSRRC in Taiwan. There are hundreds of magnets placed on girders that must be aligned correctly to keep the electronic beam desire orbit. Due reasons manpower, set up time, accuracy adjustment, deformation floor, and limited space, an auto-alignment girder control system was designed meet this requirement. The autoalignment test completed with one double-bend cell NSRRC. Auto-alignment process will tested some sections...
We have carried out a detailed study of gap induced radiation loss effect in micro-ring resonator. Our data show that small-gap dominates the total ring as is less than 225 nm for TM mode.
We demonstrate a highly compact Silicon microring filter with radius of 1.75µm. The exhibits free spectral range over 50nm and propagation loss 0.034dB/per-turn at TE like mode 0.72dB/per-turn TM mode. wide FSR can accommodate the whole C band for WDM application.
2012 International Conference on Solid State Devices and Materials,Undercut GaAs/In0.5Ga0.5P High-Speed Laser Power Converter for Simultaneous 10 Gbit/sec Data Detection Efficient dc Electrical Generation
Two wideband self-decoupled dual antennas for the fifth-generation (5G) multiple-input, multiple-output (MIMO) operation in a smartphone are presented. The composed of differential mode (DM) antenna and common (CM) antenna. They integrated into same radiator size reduction. Their feeding positions arranged asymmetrically on radiator, high isolation low envelope correlation coefficients (ECCs) can be obtained without need an external decoupled structure. For first example, rectangular have 5...
A frequency reconfigurable four-way power divider with the sequential phase outputs of 0°, 90°, 180°, and 270° is proposed. The composed three compact couplers, including dual quasi-lumped quadrature couplers one reduced-size branch-line hybrid coupler; in addition, several varactor diodes are involved designs couplers. By controlling reverse voltages varactors, operation can be reconfigured, four have same amplitude differences 90° at each frequency. prototype proposed implemented, measured...
A synchronous and highly accurate all-digital duty-cycle corrector (ADDCC), which uses simplified dual-loop architecture, is presented in this paper. To explain the operational principle, a detailed circuit description formula derivation are provided. verify proposed design, chip was fabricated through 0.18-µm standard complementary metal oxide semiconductor process with core area of 0.091 mm2. The measurement results indicate that ADDCC can operate between 300 600 MHz an input range 40–60%,...