The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
Wei Wei - One of the best experts on this subject based on the ideXlab platform.
-
DESIGN AND PERFORMANCE EVALUATION OF NARROWBAND RECTANGULA OPTICAL FILTER BASED ON STIMULATED BRILLOUIN SCATTERING IN FIBER
2016Co-Authors: Wei WeiAbstract:We propose a rectangular optical filter based on stimulated Brillouin scattering in fiber with tunable bandwidth from 50 MHz to 4 GHz at 15-MHz tuning resolution. The steep-edged rectangular shape of the filter is precisely controlled utilizing digital feedback revision of the pump light. The Passband Ripple is ~1 dB by nonlinearity management of the pump and using the fiber with a single Brillouin peak. The extinction ratio of the filter is further enhanced using the polarization characteristics of the Brillouin scattering. Based on this filter, we demonstrate a sub-band extraction of a multi-band orthogonal frequency division multiplexing signal, which shows the potential ability of the filter in the fields of optical and microwave signal processing
-
System Performance Evaluation of Stimulated Brillouin Scattering Based Narrowband Rectangular Optical Filter
2014Co-Authors: Wei Wei, Yves Jaouen, Elie Awwad, Michel MorvanAbstract:We propose a narrow band rectangular optical filter based on stimulated Brillouin scattering with flexible bandwidth and ~1-dB Passband Ripple. Only small performance penalty is observed when employing the filter into the OFDM system.
-
System Performance Evaluation of Stimulated Brillouin Scattering Based Narrowband Rectangular Optical Filter
'The Optical Society', 2014Co-Authors: Wei Wei, Yi Lilin, Jaouen Yves, Awwad Elie, Morvan MichelAbstract:International audienceWe propose a narrow band rectangular optical filter based on stimulated Brillouin scattering with flexible bandwidth and ~1-dB Passband Ripple. Only small performance penalty is observed when employing the filter into the OFDM system
-
An ultra-flat rectangular optical filter based on stimulated Brillouin scattering in fibre
2014 The European Conference on Optical Communication (ECOC), 2014Co-Authors: Wei Wei, Yves Jaouen, Yi DongAbstract:We demonstrate a rectangular optical filter based on stimulated Brillouin scattering with bandwidth from 50 MHz to 4 GHz. The Passband Ripple is ~1 dB by nonlinearity management of the pump lines and using fibre with a single Brillouin peak.
Vamsy P. Chodavarapu - One of the best experts on this subject based on the ideXlab platform.
-
ISCAS - All-digital Time-Mode elliptic filters based on the operational simulation of LC ladders
2014 IEEE International Symposium on Circuits and Systems (ISCAS), 2014Co-Authors: Moataz Abdelfattah, Gordon W. Roberts, Vamsy P. ChodavarapuAbstract:Time-Mode Signal Processing (TMSP) techniques are attempting to develop analog signal processing algorithms using primitive digital building blocks such as inverters and NAND/NOR gates. By doing so, the design of such analog circuits can be captured and automated by standard digital design tools and methodologies. In this paper, a method is proposed for designing high-order elliptic filters based on the operational simulation of LC ladder networks using a set of all-digital timemode building blocks (some new, some known). The design of a fifth-order elliptic filter having 1 dB Passband Ripple and 60 dB of stopband attenuation will be used to demonstrate the feasibility of the proposed design method.
Eryk Dutkiewicz - One of the best experts on this subject based on the ideXlab platform.
-
VTC Spring - Design of an Elliptic Filter Using Multiple-Loop Feedback Structure in CMOS Technology for Analogue Signal Processing
2017 IEEE 85th Vehicular Technology Conference (VTC Spring), 2017Co-Authors: Eryk DutkiewiczAbstract:Abstract-Design of high-performance continuous- time filter (CTF) for analogue signal processing is presented in this paper. To demonstrate of using a novel voltage-mode multiple-loop feedback (MLF) approach for CTF design, a 5th-order elliptic lowpass filter (LPF) is implemented in a standard 0.18-µm CMOS technology. The LPF is based on an inverse-follow-the-leader feedback structure with an input distribution network to generate the required transmission zeros. The LPF consumes 35 mA from a single 1.8 V power supply and it has a cut-off frequency of 30 MHz with less than 0.7 dB Passband Ripple and more than 60 dB stopband attenuation. In addition, a 65 dB dynamic range is achieved.
Jose Silva-martinez - One of the best experts on this subject based on the ideXlab platform.
-
A 2.7V, 1.8GHz, 4 th order tunable LC bandpass filter with ± 0.25dB Passband Ripple
2002Co-Authors: Ahmed N. Mohieldin, Edgar Sanchez-sinencio, Jose Silva-martinezAbstract:A low-voltage 4th order RF bandpass filter structure based on a two magnetically-coupled resonators prototype is presented. Each resonator is built using on-chip spiral inductors and accumulation-mode PMOS capacitors to provide center frequency tuning. The proposed architecture is using electric coupling to emulate the effect of the transformer thus providing bandwidth tuning with small Passband Ripple. The filter has been implemented in HP0.5 µm CMOS process and occupies an area of 0.15mm2. It consumes 16mA from a single 2.7V supply at a center frequency of 1.84GHz and a bandwidth of 80MHz while providing a Passband gain of 9dB. The measured output 1 dB compression point, and output noise power spectral density are -40dBm and -161dBm/√Hz, respectively. This results in a 1dB compression dynamic range of 42dB.
-
Design considerations of bandpass LC filters for RF applications
The 2002 45th Midwest Symposium on Circuits and Systems 2002. MWSCAS-2002., 1Co-Authors: Ahmed N. Mohieldin, Edgar Sanchez-sinencio, Jose Silva-martinezAbstract:This paper presents different design considerations of active Q-enhanced LC bandpass filters. An architecture for implementing high order filters is proposed. It uses electric coupling to emulate the effect of the transformer, thus providing bandwidth tuning with small Passband Ripple.
Wan-chi Siu - One of the best experts on this subject based on the ideXlab platform.
-
Empirical formula for designing a class of linear phase FIR single band PCLS filters
Digital Signal Processing, 2013Co-Authors: Bingo Wing-kuen Ling, Ted Chi-wah Kok, Wan-chi Siu, Kok Lay TeoAbstract:This paper presents an empirical formulation relating the filter length, the transition-band bandwidth, the cutoff frequency, the maximum Passband-Ripple magnitude, the maximum stopband-Ripple magnitude and the total Ripple energy of a class of linear phase finite impulse response (FIR) single band peak constrained least squares (PCLS) filters. Design examples are presented to demonstrate applications and accuracies of the presented formula.
-
EUSIPCO - Empirical formula for designing symmetric/anti-symmetric FIR single band PCLS filters
2008Co-Authors: Bingo Wing-kuen Ling, Zhi-wei Chi, Chi-wah Kok, Wan-chi SiuAbstract:An empirical formulation that relates the filter length, the transition bandwidth, the cutoff frequency, the maximum Passband Ripple magnitude, the maximum stopband Ripple magnitude and the total Ripple energy of symmetric/anti-symmetric finite impulse response (FIR) single band peak constrained least squares (PCLS) filters is presented. Design examples are presented to demonstrate the application and accuracy of the presented formula.