Browsing 2016/1 by Issue Date

Now showing items 21-28 of 28

  • Single Tree Vegetation Depth Estimation Tool for Satellite Services Link Design 

    Hasirci, Z.; Cavdar, I. H.; Ozturk, M. (Společnost pro radioelektronické inženýrství, 2016-04)
    Attenuation caused by tree shadowing is an important factor for describing the propagation channel of satellite services. Thus, vegetation effects should be determined by experimental studies or empirical formulations. In ...

  • Off-set Filtering Effect in SOA Based Optical Access Network 

    Udvary, E. (Společnost pro radioelektronické inženýrství, 2016-04)
    In-line and reflective semiconductor optical amplifiers (SOA and RSOA) can be effectively utilized as external optical intensity modulators. However the limited modulation bandwidth affects the application possibilities, ...

  • On the Application of the Incomplete QR Algorithm to the Analysis of Microstrip Antennas 

    Gluchowski, P.; Kucharski, A. A. (Společnost pro radioelektronické inženýrství, 2016-04)
    In this paper, we provide some insight into the usage of fast, iterative, method-of-moments (MoM) solution of integral equations (IE) describing antennas and other metallic structures immersed in a planar multilayered ...

  • A High-gain and Low-scattering Waveguide Slot Antenna of Artificial Magnetic Conductor Octagonal Ring Arrangement 

    Liu, X.; Gao, J.; Cao, X. Y.; Zhao, Y.; Li, W.Q.; Li, S.J.; Li, N. (Společnost pro radioelektronické inženýrství, 2016-04)
    A novel design of high-gain and low-scattering waveguide slot antenna is proposed in this paper. Firstly the scattering pattern of artificial magnetic conductor (AMC) composite surface is estimated by array factor analysis ...

  • Small Square Reconfigurable Antenna with Switchable Single/Tri-Band Functions 

    Borhani Kakhki, M.; Rezaei, P.; Sharbati, V.; Fakharian, M. M. (Společnost pro radioelektronické inženýrství, 2016-04)
    A novel frequency reconfigurable slot antenna for suitable switchable radiations at WLAN and a tri-band at Bluetooth, WiMAX and upper WLAN applications is designed and fabricated. Switchable frequency responses are achieved ...

  • Optimum Functions for Radial Wires of Monopole Antennas with Arbitrary Elevation Angles 

    Fartookzadeh, M.; Mohseni Armaki, S. H.; Razavi, S. M. J.; Rashed-Mohassel, J. (Společnost pro radioelektronické inženýrství, 2016-04)
    Monopole antennas on the earth usually use ground screen with simple radial wires to improve their radiation performance. The number of radials,N, is usually considered a constant in the screen. This paper studies the ...

  • Analysis and Comparison of new Downlink Technologies for Earth Observation Satellites 

    Henniger, H.; Seyfarth, S.; Diedrich, E. (Společnost pro radioelektronické inženýrství, 2016-04)
    New generation of Earth observation sensors are creating an increasing amount of data which has to be delivered from space-to-ground. Additionally, many applications require timely availability of this sensor data. As new ...

  • An Introduction to the Source Concept for Antennas 

    Hazdra, P.; Capek, M.; Masek, M.; T. Lonsky (Společnost pro radioelektronické inženýrství, 2016-04)
    Antenna parameters particularly relevant to electrically small antenna design are reviewed in this paper. Source current definitions are accentuated leading to the introduction of the source concept which advantageously ...