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Zobrazují se záznamy 1-20 z 10780

  • 

    Tvrdík, Lukáš
    Žárovzdorné materiály mají nezastupitelné místo ve všech průmyslových oborech, kde je zapotřebí použití vysokých teplot. Tato práce je zaměřena na použití metakaolinu v žárovzdorných materiálech, které umožňují provozování ...

  • 

    Kika, Ondřej
    Disertační práce nazvaná Kmitání štíhlých mostních konstrukcí se zabývá porovnáním odezev konstrukcí lávek na různé zatěžovací modely chodců. Konkrétně v praxi běžně používaný model, kde jsou účinky chodců nahrazeny silami ...

  • A 0.18µm CMOS DDCCII for Portable LV-LP Filters 

    Stornelli, V.; Ferri, G. (Společnost pro radioelektronické inženýrství, 2013-06)
    In this paper a current mode very low voltage (LV) (1V) and low power (LP) (21 µW) differential difference second generation current conveyor (CCII) is presented. The circuit is developed by applying the current sensing ...

  • 0.5V 3rd-order Tunable gm-C Filter 

    Arya, R.; Souliotis, G.; Vlassis, S.; Psychalinos, C. (Společnost pro radioelektronické inženýrství, 2013-04)
    This paper proposes a 3rd-order gm-C filter that operates with the extremely low voltage supply of 0.5V. The employed transconductor is capable for operating in an extremely low voltage power supply environment. A benefit ...

  • A 0.8 V T Network-Based 2.6 GHz Downconverter RFIC 

    Wu, J.-M.; Liou, C.-K.; Chuang, C.-J.; Kuo, Y. (Společnost pro radioelektronické inženýrství, 2012-04)
    A 2.6 GHz downconverter RFIC is designed and implemented using a 0.18 μm CMOS standard process. An important goal of the design is to achieve the high linearity that is required in WiMAX systems with a low supply voltage. ...

  • A 1.2 V and 69 mW 60 GHz Multi-channel Tunable CMOS Receiver Design 

    Oncu, A. (Společnost pro radioelektronické inženýrství, 2015-04)
    A multi-channel receiver operating between 56 GHz and 70 GHz for coverage of different 60 GHz bands worldwide is implemented with a 90 nm Complementary Metal-Oxide Semiconductor (CMOS) process. The receiver containing an ...

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

    Muñiz-Montero, C.; Sanchez-Gaspariano, L. A.; Rocha-Perez, J. M.; Molinar-Solis, J. E.; Sanchez-Lopez, C. (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 ...

  • 1200 W flyback switching power supply with silicon carbide semiconductors 

    Martiš, J. (Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií, 2015)
    This paper shows how a recent advancement in power semiconductor technology and some improvements can allow the flyback switching power supply to operate effectively at high output powers. The switching frequency can be ...

  • A 159 μW, Fourth Order, Feedforward, Mutli-bit Sigma Delta Modulator for 100 kHz Bandwidth Image Sensors in 65-nm CMOS Process 

    Bashir, M.; Rao Patri, S.; Krishna Prasad, K. S. R. (Společnost pro radioelektronické inženýrství, 2018-06)
    A fourth-order, three-stage, feedforward cascade sigma-delta modulator (ƩΔM) for CMOS image sensor applications is realized in low leakage, high threshold voltage 65 nm CMOS standard process. A top down CAD methodology is ...

  • 2-D DOA Estimation of LFM Signals Based on Dechirping Algorithm and Uniform Circle Array 

    Cui, K. B.; Wu, W. W.; Chen, X.; Huang, J. J.; Yuan, N. C. (Společnost pro radioelektronické inženýrství, 2017-04)
    Based on Dechirping algorithm and uniform circle array(UCA), a new 2-D direction of arrival (DOA) estimation algorithm of linear frequency modulation (LFM) signals is proposed in this paper. The algorithm uses the thought ...

  • 2-D Motion Estimation of Video Sequences with Influnce of Zero-Mean Gaussian Noise 

    Usama, S.; Simak, B.; Klima, M. (Společnost pro radioelektronické inženýrství, 1999-12)
    This paper presents the performance of four motion estimation algorithms with present of zero-mean Gaussian noise. The performance of full search (FS) algorithm, three-step search (TSS) algorithm, new three-step search ...

  • A 28-nm 32Kb SRAM For Low-VMIN Applications Using Write and Read Assist Techniques 

    Kumar, S.; Saha, K.; Gupta, H. (Společnost pro radioelektronické inženýrství, 2017-09)
    In this paper new write and read assist techniques, reduced coupling signal negative bitline (RCS-NBL) and low power disturbance noise reduction (LP-DNR) of 6T static random-access memory (SRAM) to improve its minimal ...

  • 2D a 3D simulace elektrických polí VN zdroje 

    Kováč, Martin
    V diplomovej práci sa autor zaoberá problematikou simulácii elektromagnetických polí ako aj ich použitím v elektrotechnickej praxi pri návrhu elektrotechnických zariadení. V prvej časti práce je pojednávané o 3 programoch ...

  • 2D DOA Estimation of UCA Correlative Interferometer Based on One Dimensional Sorting Lookup Table-Two Dimensional Linear Interpolation Algorithm 

    Cui, K. B.; Wu, W. W.; Huang, J. J.; Chen, X.; Yuan, N. C. (Společnost pro radioelektronické inženýrství, 2017-06)
    In order to improve the direction-finding efficiency of the correlative interferometer and reduce the size of the lookup table, this paper proposes the one dimensional sorting lookup table-two dimensional linear interpolation ...

  • 2D Iterative MAP Detection: Principles and Applications in Image Restoration 

    Kekrt, D.; Lukes, T.; Klima, M.; Fliegel, K. (Společnost pro radioelektronické inženýrství, 2014-06)
    The paper provides a theoretical framework for the two-dimensional iterative maximum a posteriori detection. This generalization is based on the concept of detection algorithms BCJR and SOVA, i.e., the classical (one-dimensional) ...

  • 2D Model of Capillary Transport of Water in Aerated Concrete 

    Šikula, Ondřej; Mohapl, Martin (Trans Tech Publications, 2013-01-08)
    Saturation degree of aerated concrete strongly affects not only all its thermal-technica properties, but regarding to the risk of freezing, also the strength properties. The aim of this paper is to discuss existing approaches ...

  • 3-D Center-Weighted Vector Directional Filters for Noisy Color Sequences 

    Lukac, R. (Společnost pro radioelektronické inženýrství, 2002-09)
    This paper focuses on a noise filtering in color image sequences, where a new class of center-weighted vector directional filters is provided. According to high dimensionality of color image sequences, where besides the ...

  • 3-D Microwave Imaging for Breast Cancer 

    Cheng, G. G.; Zhu, Y.; Grzesik, J. (Společnost pro radioelektronické inženýrství, 2012-12)
    We introduce a novel microwave imaging technique for breast cancer detection. Our approach provides a one-pass inverse image solution, which is completely new and unprecedented, unrelated to tomography or radar-based ...

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

    Montero-de-Paz, J.; Garcia-Muñoz, L. E.; Segovia-Vargas, D. (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 ...

  • 35-GHz Wideband Vertical Off-Center-Fed Dipole and Its Array in LTCC Technology 

    Du, M.; Xu, J.; Ding, X.; Cao, J. P.; Deng, J. H.; Dong, Y. L. (Společnost pro radioelektronické inženýrství, 2018-04)
    A 35-GHz wideband low-temperature co-fired ceramic (LTCC) vertical off-center-fed dipole antenna and its 2×2 array are presented. The widened bandwidth of the dipole antenna is achieved by paralleling a ring-shaped stub ...