Browsing 2013/2 by Issue Date

Now showing items 1-20 of 31

  • 1.5V fully programmable CMOS Membership Function Generator Circuit with proportional DC-voltage control 

    Muniz-Montero, Carlos; Sanchez-Gaspariano, Luis A.; Rocha-Perez, Jose M.; Molinar-Solis, Jesus E.; Sanchez-Lopez, Carlos (Společnost pro radioelektronické inženýrství, 2013-06)
    A Membership Function Generator Circuit (MFGC) with bias supply of 1.5 Volts and independent DC-voltage programmable functionalities is presented. The realization is based on a programmable differential current mirror and ...

  • An Ultra-Low-Power Oscillator with Temperature and Process Compensation for UHF RFID Transponder 

    Wang, Yao; Liu, Jiaxin; Xie, Liangbo; Wen, Guangjun (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper presents a 1.28MHz ultra-low-power oscillator with temperature and process compensation. It is very suitable for clock generation circuits used in ultra-high-frequency (UHF) radio-frequency identification (RFID) ...

  • A 300 GHz "Always-in-Focus" Focusing System for Target Detection 

    Montero-de-Paz, Javier; Enrique Garcia-Munoz, Luis; Segovia-Vargas, Daniel (Společnost pro radioelektronické inženýrství, 2013-06)
    A focusing system for a 300 GHz radar with 5 m target distance and 10 mm diameter spot size resolution is proposed. The focusing system is based on a Gaussian telescope scheme and its main parameters have been de¬signed ...

  • Novel CCII-based Field Programmable Analog Array and its Application to a Sixth-Order Butterworth LPF 

    Mahmoud, Soliman; Soliman, Eman (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, a field programmable analog array (FPAA) is proposed. The proposed FPAA consists of seven configurable analog blocks (CABs) arranged in a hexagonal lattice such that the CABs are directly connected to each ...

  • Single-input Multiple-output Tunable Log-domain Current-mode Universal Filter 

    Prommee, Pipat; Dejhan, Kobchai (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper describes the design of a current-mode single-input multiple-output (SIMO) universal filter based on the log-domain filtering concept. The circuit is a direct realization of a first-order differential equation ...

  • Research on 2×2 MIMO Channel with Truncated Laplacian Azimuth Power Spectrum 

    Wu, Qing; Yang, Xue-Song; Zhang, Yi-Teng (Společnost pro radioelektronické inženýrství, 2013-06)
    Multiple-input multiple-output (MIMO) Rayleigh fading channel with truncated Laplacian azimuth power spectrum (APS) is studied. By using the power correlation matrix of MIMO channel model and the modified Jakes simulator, ...

  • A tunable Butterworth low-pass filter with digitally controlled DDCC 

    Hwang, Yuh-Shyan; Liu, An; Wang, San-Fu; Yang, Ssu-Che; Chen, Jiann-Jong (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper presents a 6th-order tunable Butterworth low-pass active filter with Digitally Controlled Differential Difference Current Conveyor (DDCC). This active filter is synthesized using the systematic method of ...

  • A Survey of Non-conventional Techniques for Low-voltage Low-power Analog Circuit Design 

    Khateb, Fabian; Dabbous, Salma Bay Abo; Vlassis, Spyridon (Společnost pro radioelektronické inženýrství, 2013-06)
    Designing integrated circuits able to work under low-voltage (LV) low-power (LP) condition is currently undergoing a very considerable boom. Reducing voltage supply and power consumption of integrated circuits is crucial ...

  • Compressed Sensing based Dynamic PSD Map Construction in Cognitive Radio Networks 

    Afshar Jahanshahi, Javad; Eslami, Mohammad; Ghorashi, Seyed Ali (Společnost pro radioelektronické inženýrství, 2013-06)
    In the context of spectrum sensing in cognitive radio networks, collaborative spectrum sensing has been proposed as a way to overcome multipath and shadowing, and hence increasing the reliability of the sensing. Due to the ...

  • DTMOS-Based 0.4V Ultra Low-Voltage Low-Power VDTA Design and Its Application to EEG Data Processing 

    Uygur, Attila; Kuntman, Hakan (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, an ultra low-voltage, ultra low-power voltage differencing transconductance amplifier (VDTA) is proposed. DTMOS (Dynamic Threshold Voltage MOS) transistors are employed in the design to effectively use the ...

  • Analyses of 100 Gbps Coherent System Performances 

    Skoda, Pavel; Radil, Jan; Vojtech, Josef; Hula, Miloslav (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper presents the results of laboratory and field testing of coherent 100 Gbps system with DP-QPSK modulation. Several measurements were performed including power budget, nonlinear threshold, spectrum filtration, ...

  • A Study of Differences in Calculated Capacity when Using Single-, Mixed- or Multiple-Bounce GSCM Schemes 

    Zentner, Radovan; Katalinic Mucalo, Ana; Nad, Robert (Společnost pro radioelektronické inženýrství, 2013-06)
    The paper looks for differences in MIMO system capacity when using either single-, mixed-, or multiple-bounce geometry based stochastic channel models (GSCMs). The investigation considers Saleh-Valenzuela temporal indoor ...

  • A BIC Based Initial Training Set Selection Algorithm for Active Learning and Its Application in Audio Detection 

    Leng, Yan; Qi, Guang-hui; Xu, Xin-yan (Společnost pro radioelektronické inženýrství, 2013-06)
    To construct a classification system or a detection system, large amounts of labeled samples are needed. However, manual labeling is dull and time consuming, so researchers have proposed the active learning technology. The ...

  • Design of Dual-band Branch-Line Coupler Based on Shunt Open-Circuit DCRLH Cells 

    Lu, Ke; Wang, Guang-ming; Tian, Bo (Společnost pro radioelektronické inženýrství, 2013-06)
    In this article, the shunt open-circuit dual composite right/left-handed (DCRLH) cell is initially proposed and one dual-band branch-line coupler based on the proposed cells is designed. It is found that, compared with ...

  • Contrast Enhancement in Poor Visibility Conditions Using Guided Filtering 

    Chowdhry, Danish Ali; Siddiqui, Adil Masood; Touqir, Imran (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, extraction of atmospheric veil is proposed to enhance the contrast of the images captured under poor visibility conditions. The method based on guided filtering can accurately recover hidden edges, maintain ...

  • Innovative Method of the Power Analysis 

    Martinasek, Zdenek; Zeman, Vaclav (Společnost pro radioelektronické inženýrství, 2013-06)
    This paper describes an innovative method of the power analysis which presents the typical example of successful attacks against trusted cryptographic devices such as RFID (Radio-Frequency IDentifications) and contact smart ...

  • Novel Low Voltage CMOS Current Controlled Floating Resistor Using Differential Pair 

    Tekin, Sezai Alper; Ercan, Hamdi; Alci, Mustafa (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, a low voltage CMOS current controlled floating resistor which is convenient for integrated circuit implementation is designed by using differential pair. The proposed resistor has a simple circuit structure ...

  • SPICE model of memristive devices with threshold 

    Pershin, Yuriy V.; Di Ventra, Massimiliano (Společnost pro radioelektronické inženýrství, 2013-06)
    Although memristive devices with threshold voltages are the norm rather than the exception in experimentally realizable systems, their SPICE programming is not yet common. Here, we show how to implement such systems in the ...

  • Analysis of ITU-R Performance and Characterization of Ku Band Satellite Downlink Signals during Rainy Season over Chennai Region of India 

    Suresh, Sanjeev; Madhan, M. Ganesh; Sivaraj, Maharaj; Parasuraman, S. (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper, we present the analysis of Ku band Satellite signal reception during rainy season over Chennai region, India (Latitude: 12° 56' 60 N, Longitude: 80° 7' 60 E). We also examine the effectiveness of International ...

  • A Comparison of the Machine Learning Algorithm for Evaporation Duct Estimation 

    Yang, Chao (Společnost pro radioelektronické inženýrství, 2013-06)
    In this research, a comparison of the relevance vector machine (RVM), least square support vector machine (LSSVM) and the radial basis function neural network (RBFNN) for evaporation duct estimation are presented. The ...