Yu-Ming Wu

Yu-Ming Wu
Beijing Institute of Technology | BIT · School of Information and Electronics

Doctor of Engineering

About

43
Publications
6,317
Reads
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317
Citations
Introduction
My research interests include characterization, design, and fabrication of electromagnetic meta-material/metasurface and advanced functional devices for optical/Terahertz/microwave frequency applications, flexible printed antenna and electronic devices for wearable and medical applications.
Additional affiliations
August 2013 - July 2018
Beijing Institute of Technology
Position
  • Lecturer
Description
  • Beijing Key Laboratory of Terahertz and Millimeter Wave Technology, Master Supervisor
October 2011 - December 2011
Université de Lille
Position
  • Overseas Attachment
Description
  • Nano Antenna Project. Dr. Wu worked in OPTO and BioMEMES Research Groups at Institute of Electronic, Microelectronic, and Nanotechnogy (IEMN), University of Lille 1, France as an Overseas Attachment Staff.
February 2011 - May 2013
Nanyang Technological University
Position
  • Research Associate
Description
  • Nanoelectronics Lab 1, School of Electrical & Electronic Engineering, College of Engineering Singapore-France Bilateral Project: Nanoantenna and Array partners include NTU, L2E@UPMC, CNRS, IEMN, CINTRA, & THALES Staff-in-Charge of the RF measurement room in CNRS-International-NTU-Thales Research Alliance (CINTRA) Laboratory at NTU: booking, training and authorizing users, on-chip measurement
Education
August 2006 - March 2011
National University of Singapore
Field of study
  • RF and Microwave
September 2002 - July 2006
Harbin Institute of Technology
Field of study
  • Communication Engineering

Publications

Publications (43)
Article
Full-text available
In this work, a design of bandpass filter (BPF) comprised of asymmetrical differential inductor and air-bridge enhanced capacitor is developed using GaAs-based integrated passive device (IPD) fabrication techniques. The Q-factor can be improved by the asymmetrical differential inductor and differential structure, providing relative less loss for th...
Conference Paper
In this paper, two kinds of highly efficient Luneburg lens reflectors have been theoretically characterized including cross- and box-type. By adding a metallic reflecting face, the greater RCS and good wide-angle response have been achieved.
Conference Paper
In this paper, a review of recent progress on holographic metasurface is presented, including the basic theory of holography, the connection between holographic application and metasurface, and possible developing trends in this area.
Article
We propose a high-performance porous metal-insulator-metal-type capacitive humidity sensor based on a functional polymer mixed with TiO 2 microparticles subjected to inductively coupled plasma (ICP) and reactive-ion etching (RIE) treatments. The humidity sensor is composed of a porous top electrode, a TiO 2-containing functional polymer humidity-se...
Article
In this paper, a planar Ku-band Luneburg lens is designed, fabricated, and measured. Based on the high impedance surface (HIS), metamaterial units are designed and arranged in an array with gradient equivalent refractive index to achieve good wave focusing effects in the Ku band. The proposed twodimensional (2D) lens is superior at its compact size...
Article
A terahertz (THz) waveguide-fed circularly polarized double-fan-shaped slot antenna (DFSSA) based on silicon micromachining technology is proposed. The antenna is fed by a WR1.9 waveguide. Optimized rotation angle of the double-fan-shaped slot can realize left-hand circular polarization (LHCP) or right-hand circular polarization (RHCP). The measure...
Article
Antipodal curvedly tapered slot antennas (ACTSAs) with different slot profiles are investigated to achieve the optimum circular polarization performance. The profiles of the tapered slots can be determined by different curves, such as linear, exponential, and logarithmic curves. Therefore, the corresponding waveguide-fed circularly polarized (CP) a...
Article
Full-text available
A dual-band bandpass filter at X-band is proposed using composite metamaterial resonator consisting of an outer square closed-ring resonator (SCRR) and two inner electric inductance–capacitance (ELC) resonators. Numerical simulation and microwave measurement reveal that the filter exhibits two passbands centered at 8.76 GHz and 11.04 GHz, with 3 dB...
Article
Full-text available
We present the design, simulation, and measurement of a polarization-independent and angle-insensitive metamaterial absorber (MA) in X-band. Since the unit cell of the MA consists of four subwavelength split-ring resonators with 4-fold symmetric rotation, the MA is insensitive to the variation of both polarization and incident angle of the planar e...
Conference Paper
Compared to other conventional reflectors, better Radar Cross-Section (RCS) can be efficiently produced by the Luneburg Lens reflector. In this paper, a compact Ku-band Luneburg Lens reflector composed of metamaterial-based unit cells has been designed, simulated and characterized. By adjusting the dimension of the unit cell, almost continuously va...
Article
A uniplanar compact metamaterial-inspired triple-band dipole antenna is designed and proposed for wireless local area network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) applications. By introducing two pairs of complementary capacitively loaded loop (CCLL) slots into a uniplanar bow-tie antenna, two notched bands can be gene...
Article
As the simple structure, Monopole antenna has been widely used in various communication systems. However, the narrow bandwidth of the monopole antenna always restricted their applications. The article presents a method to improve the bandwidth of the monopole antenna with graded multi-layer metal slabs. The measured results of the proposed monopole...
Article
A waveguide-fed circularly polarized corrugated antipodal tapered slot antenna (ATSA) working in the Ka band (26.5∼40 GHz) is proposed in this paper. The exponential tapering shape is adopted to maintain the consistency of the antenna's beam-width. In addition, the corrugation structure along the edges of ATSA is particularly designed to improve th...
Article
A front end of 8mm polarimetric microwave radiometer is presented in this paper. Simulations and measurements have shown that it has a good performance. The actual measured results show that it has an impedance bandwidth of VSWR<1.25 over 35GHz-39GHz, within which the two ports isolation is lower than -39dB, the gain of it is larger than 21.6dBi an...
Article
A terahertz (THz) micromachined waveguide bandpass filter based on metallic two-dimensional (2D) electromagnetic crystal (EMXT) with a square lattice is proposed. The filter structure with three dual-mode circular cavities and two rectangular waveguides is obtained by removing and optimising the EMXT unit cells in a 15 × 20 cells array. This filter...
Conference Paper
A coplanar bow-tie antenna with triple-band operation for WLAN and WiMAX application is presented. The dual band-notched characteristic is realized by etching a U-shaped slot and a capacitively-loaded-loop (CLL)-shaped slot in the radiation patch. A triple band antenna, covering 2.24-2.70, 3.24-4.24, 4.84-6.00GHz, can be achieved through adjusting...
Conference Paper
This paper proposes a design for low profile, compact, circularly polarized double-layer horn antenna integrated with the planar corrugated polarizer with high gain and low cross polarization for THz applications. In particular, the novel polarizer with the planar corrugates is introduced to make the horn antenna circularly polarized. Based on such...
Conference Paper
In this paper, a novel printed antenna on the flexible substrate working at Gigahertz frequency is proposed based on the conductive carbon nanotube (CNT) ink. By advanced fabricating technique, the CNT ink is especially prepared and characterized so that a low-cost fabrication process has been developed for such a CNT printed antenna. The electroma...
Conference Paper
Based on the finite integration technique, the optical resonant properties of single and couple nanoparticles of many shapes have been comprehensively investigated. Characterized by the surface plasmon resonance, these structures are proven to be nanoantennas operating in the optical range. Their optical properties are found to be dependent on vari...
Article
An analytical solution is presented for the electromagnetic scattering from an infinite-length metallic carbon nanotube and a carbon nanotube bundle. The scattering field and scattering cross section are predicted using a modal technique based on a Bessel and Hankel function for the electric line source and a quantum conductance function for the ca...
Article
Based on the dielectric property of carbon nanotube film, the surface plasmon ploariton propagation and localization phenomena on the carbon nanotube film are investigated using THz time-domain spectroscopy technique. The simulation results show that in the gate period of 168 um, the resonance peaks of surface plasmon mode are at 0.99 THz and 1.95...
Article
80% in the visible spectra range and the transmission normalized to the hole area can even be almost 100 times stronger than the intensity per unit area of the incident light. The great enhancement is sufficient to attract the special attention of scientists. They also present that these periodic circle annular apertures are mainly responsible from...
Article
Based on the theory of simple tight-binding, the electronic energy structure of carbon nanotubes has been obtained under the quantitative periodic boundary condition of the carbon nanotubes. Terahertz radiation emitted by carbon nanotubes was demonstrated theoretically by adopting the reported experimental results of the interaction between electro...
Article
A new carbon nanotube antenna to generate terahertz waves is proposed. The typical properties of terahertz radiation from carbon nanotube dipole antennas have been investigated based on finite integral methods. The terahertz pulses emitted from carbon nanotubes and the terahertz amplitude spectrum have been analysed for carbon nanotubes with a leng...
Article
Full-text available
In this paper, the optical bow-tie shaped aperture nanoantenna excited by a plane wave is numerically investigated based on the finite integration technique (FIT) where both near-field resonant properties, and far-field radiation characteristics are studied. Different from conventional metallic antennas used in the radio frequency range, gold apert...
Article
This paper investigates the radiation characteristics of metal single-walled zig-zag carbon nanotubes as a dipole antenna at terahertz wave range. The current distribution, input impedance and mutual impedance are calculated for various geometrical parameters of vertically-aligned carbon nanotubes. The numerical results demonstrate the properties o...
Conference Paper
In this paper, an investigation on the topic of the bow-tie nanoantenna for optical application is carried out. Based on the broad band calculations in the visible and near infrared range of the optical spectrum implemented through the finite integration technique, we focus our study on such nanoantenna's near-field optical properties. It is found...
Conference Paper
In this paper, the nanometer scale bow-tie antenna and its geometrically complementary bow-tie shaped aperture antenna are proposed and discussed focusing on their optical resonance characteristics. To demonstrate such structures, the finite integration technique is developed in broad band calculations especially in the visible and infrared region....
Conference Paper
Full-text available
In this paper, novel RF distributed MEMS transmission line (DMTL) phase shifters based on rectangular and arched bridge-like coplanar waveguides (rec-BCPW and arc-BCPW) structure are proposed and the comparison of their configuration and RF performance is also presented. A CST software is used for the modeling, simulation and optimization from 30 t...
Conference Paper
Full-text available
In this paper, a novel transparent thin film based on carbon nanotube (CNT) technology for radio frequency (RF) electromagnetic shielding is presented. The thin film, which is assumed to be infinite in length and width and tens to hundreds nanometers in thickness, consists of two layers of CNTs perpendicular to each other with a distance of hundred...
Conference Paper
Full-text available
A new carbon nanotube-based antenna for terahertz application is proposed. The wave velocity and propagation constant of single-walled carbon nanotube bundle dipole antenna is analyzed based on the compact equivalent circuit model of single walled carbon nanotube bundle. The results show that the slower wave velocity of a bundle antenna means that...
Article
A characteristic analysis method for finite difference time domain (FDTD) based on frequency response is presented. By this method, the characteristic of FDTD can be mapped into the characteristic of frequency response of a system. So FDTD can be studied through the system. In this paper, we deduce the frequency response of the system with respect...
Conference Paper
The operating principle of the RF MEMS phase shifter is described. A novel design concept for dual-frequency RF MEMS phase shifter is proposed. By using network theory and CST microwave studio simulation tool, the proposed RF MEMS phase shifter is modelled. Simulation results show that the proposed model has the return loss less than -10dB and the...
Conference Paper
Full-text available
In this paper, light scattering by a chain of nanoparticles of different shapes including spheres and ellipsoids is investigated. Characterized by surface plasmon resonances of metallic nanoparticles, these structures could behave like nanoantenna and they have potential practical applications in the microscopy, spectroscopy, and optoelectronic dev...
Conference Paper
Full-text available
The phase center of ultra-wide band (UWB) antenna acts a lot to the performance in the time domain [1]. Usually, the width of transmitted impulse is about several hundreds of nanoseconds, so even fine phase center drift will influence the phase of far field much and lead to the waveform dispersion in the time domain [2-3] if we recognize the far f...
Article
Full-text available
This paper presents a cascode-pair distributed amplifier design approach using 0.25 μm GaAs-based PHEMT MMIC technology, which covers 2–32 GHz. Electromagnetic simulation results show that this amplifier achieves 18 dB gain from 2 to 32 GHz and ±0.5 dB gain flatness over the band. The reflected coefficients at the input and output ports are below −...
Article
The paper presents a model which describes the stage circuit of Distributed MEMS Transmission Line (DMTL) phase shifter at Ka band and an approach for DMTL design utilizing the saw-shaped coplanar waveg- uide(CPW). The result of circuit simulation and full wave analysis prove that the model is in good agreement with theoretical analysis. The model...
Article
It is the first time this paper investigates the fundamental characteristics of the loop antenna formed single-walled carbon nanotubes from 1.010 terahertz frequency region using finite integral methods. The armchair single-walled carbon nanotubes can be considered due to their metallic conducting. The surface current dense, electric field and mag...
Article
In this paper, the present research progress on nanoantennas are described and reviewed. Based on the discussions of different configurations of nanophase material, their potential applications of nanoantenna working in the optical region are presented and compared. From the study of the specified material's properties and the theoretical analysis...

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