Now showing items 1-20 of 30

  • On Segmented Predistortion for Linearization of RF Power Amplifiers 

    Baudoin, G. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper presents a general survey of digital predistortion (DPD) techniques with segmentation. A comparison of global DPD with two segmented approaches namely Vector-Switched DPD and Decomposed Vector Rotation DPD is ...
  • Residue-Pole Methods for Variability Analysis of S-parameters of Microwave Devices with 3D FEM and Mesh Deformation 

    Rufuie, M. R.; Lamecki, A.; Sypek, P.; Mrozowski, M. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper presents a new approach for variability analysis of microwave devices with a high dimension of uncertain parameters. The proposed technique is based on modeling an approximation of system by its poles and residues ...
  • Microwave Components Realized by Additive Manufacturing Techniques 

    Tomassoni, C.; Bozzi, M. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper presents an overview of the use of additive manufacturing (AM) technologies for the implementation of microwave components. Two major technological solutions, based on the AM of plastic materials, are discussed: ...
  • XGB Model : Research on Evaporation Duct Height Prediction Based on XGBoost Algorithm 

    Zhao, W. P.; Li, J.; Zhao, J.; Zhao, D.; Lu, J.; Wang, X. (Společnost pro radioelektronické inženýrství, 2020-04)
    Evaporation duct is a specific atmospheric structure at sea, which has an important influence on the propagation path of electromagnetic waves (EW). Considering the limit of existing evaporation duct height (EDH) prediction ...
  • Smart-Mesh Strategy in DGTD Method for Partially Filled Cavity with Uncertain Interface Parameters 

    Li, H.P.; Hussain, I.; Wang, Y.; Cao, Q. S. (Společnost pro radioelektronické inženýrství, 2020-04)
    To achieve high quality localization of nodes, a smart-mesh strategy is employed in the discontinuous Galerkin time-domain (DGTD) simulation. The strategy is able to adjust adaptively the nodes defined on the unstructured ...
  • Practically Feasible Closed-Loop Digital Predistortion for VCSEL-MMF-Based Radio-over-Fiber links 

    Hadi, M. U.; Nanni, J.; Venard, O.; Baudoin, G.; Polleux, J. L.; Tartarini, G. (Společnost pro radioelektronické inženýrství, 2020-04)
    The article demonstrates a novel Digital Predistortion (DPD) architecture for Mobile Front Haul links for the advanced Long-Term Evolution (LTE) and upcoming 5G networks. Precisely, the use of a feedback approximation ...
  • Ku-Band High Performance Monopulse Microstrip Array Antenna Based on Waveguide Coupling Slot Array Feeding Network 

    Zou, L.; Wang, X. T.; Wang, W.; Du, W. Y. (Společnost pro radioelektronické inženýrství, 2020-04)
    A high gain low sidelobe monopulse microstrip array antenna for Ku-band frequency modulated conti-nuous wave (FMCW) radar application is proposed. The design consists of microstrip array radiation front-end and waveguide ...
  • A Wide and Tri-band Flexible Antennas with Independently Controllable Notch Bands for Sub-6-GHz Communication System 

    Zaidi, A.; Awan, W. A.; Hussain, N.; Baghdad, A. (Společnost pro radioelektronické inženýrství, 2020-04)
    A wide-band and tri-band flexible antenna for fifth-generation (5G) sub-6-GHz communication systems is investigated in this paper. The proposed wideband antenna covers the 5G new radio (NR) mid-band, ranging from 2.8 to ...
  • A Compact SIW Power Divider for Dual-Band Applications 

    Barik, R. K.; Cheng, Q. S.; Pradhan, N. C.; Subramanian, K. S. (Společnost pro radioelektronické inženýrství, 2020-04)
    In this paper, a novel design of highly compact power divider employing substrate-integrated waveguide (SIW) is proposed for dual-band applications. The double-ring asymmetric complimentary split-ring resonators (CSRRs) ...
  • A Frequency and Polarization Agile Disc Monopole Wearable Antenna for Medical Applications 

    Saha, P.; Mitra, D.; Parui, S. K. (Společnost pro radioelektronické inženýrství, 2020-04)
    A combined frequency and polarization reconfigurable textile based wearable disc monopole antenna is proposed in this paper. The antenna consists of a disc monopole as the radiator and four PIN diodes for realizing the ...
  • Circularly Polarized Printed Helix Antenna for L- and S-Bands Applications 

    Siahcheshm, A.; Nourinia, J.; Ghobadi, Ch.; Shokri, M. (Společnost pro radioelektronické inženýrství, 2020-04)
    The first aim of this work is to design a new geometry of printed helix antennas in a simple structure that only uses planar FR4 substrates, unlike conventional wire helix antennas. The main body of helix comprises four ...
  • Isosceles Triangular Resonator Based Compact Triple Band Quad Element Multi Terminal Antenna 

    Islam, Sk. N.; Das, S. (Společnost pro radioelektronické inženýrství, 2020-04)
    A triple band quad element multi-input-multi-output (MIMO) antenna is proposed for Bluetooth (2.4 GHz), WLAN (2.5/4.9 GHz) and LTE (3.7 GHz) applications. A compact triangular ring-shaped structure is used as an antenna ...
  • Method for Phase Noise Impact Compensation in 60 GHz OFDM Receivers 

    Lomayev, A.; Kravtsov, V.; Genossar, M.; Maltsev, A.; Khoryaev, A. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper presents a method for phase noise impact compensation in 60 GHz OFDM receivers and provides the results of performance evaluation using OFDM PHY parameters defined in the IEEE 802.11ay standard. It is shown that ...
  • Takacs Model of Hysteresis in Mathematical Modeling of Memristors 

    Dautovic, S.; Samardzic, N.; Juhas, A. (Společnost pro radioelektronické inženýrství, 2020-04)
    In this paper, the mathematical modeling of memristor via Takacs model of hysteresis is presented along with a modification of this model tailored to describe the asymmetric hysteresis loop and first order reversal curves. ...
  • Experimental Tests and Performance Evaluation of a VHF Data Transceiver Prototype for Operation in the Antarctic Regions 

    Prieto, M.; de Pablo, M. A.; Ramos, M.; Jimenez, J. J. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper presents the study and implementation results of a point to point radio data link carried out by the PERMASNOW project Research Team in the Gabriel de Castilla (GdC) Spanish Antarctic Station (Deception Island, ...
  • Speech Bandwidth Extension Using DWT-FFT-Based Data Hiding 

    Kurada, P.; Maruvada, S.; Sanagapallea, K. R. (Společnost pro radioelektronické inženýrství, 2020-04)
    A novel transform-domain speech bandwidth extension algorithm is proposed to transmit information about the missing speech frequencies over a hidden channel, i.e., the related encoded spectral envelope parameters are hidden ...
  • A Novel Mega-stable Chaotic Circuit 

    Pham, V. T.; Ali, D. S.; Al-Saidi, N. M. G.; Rajagopal, K.; Alsaadi, F. E.; Jafari, S. (Společnost pro radioelektronické inženýrství, 2020-04)
    In recent years designing new multistable chaotic oscillators has been of noticeable interest. A multistable system is a double-edged sword which can have many benefits in some applications while in some other situations ...
  • Surrogate Model Assisted Design of CSRR Structure using Genetic Algorithm for Microstrip Antenna Application 

    Sarmah , K.; Goswami, S.; Baruah, S. (Společnost pro radioelektronické inženýrství, 2020-04)
    Soft-computational approaches have enabled quicker and more efficient means for antenna design. In the present work, a genetic algorithm (GA) based method is reported for the design of complementary split ring resonator ...
  • Analyzing the Resonance Resultant from the Capacitive Effects in Bulk Current Injection Probe 

    Mashriki, I. M.; Razavi, S. M. J.; Armaki, S. H. M. (Společnost pro radioelektronické inženýrství, 2020-04)
    In this paper, the effect of the slot distance, existed between the two parts of BCI-probe shield, on its performance is studied, therefore, two ferrite materials with the same size and different characteristics are used ...
  • A Novel Design of Single Branch Wideband Rectifier for Low-Power Application 

    Wu, S.; Wang, J.; Liu, J.; Cheng, D. Y; Wu, Y. B.; Li, R. F.; Li, M. Q. (Společnost pro radioelektronické inženýrství, 2020-04)
    This paper proposes a novel design of single branch wideband rectifier working at low input power level. Both the impedance tuning part and a dual-band matching network are adopted for wideband impedance matching. Theoretical ...