Zobrazují se záznamy 1-20 z 47630

  • An Acoustic Object Recognition System 

    Turan, J. (Společnost pro radioelektronické inženýrství, 1992-10)
    This paper presents the results of a study on use rapid transform to analysis of acoustic echo signals in an acoustic object recognition system. The echo signals are analysed in the time invariant rapid transform domain ...
  • Signal-Flow Graph Network Analysis 

    Dostal, T.; Mikula, J. (Společnost pro radioelektronické inženýrství, 1992-10)
    A novel type of signal-flow graph is presented creating minimum number of nodes for independent voltages only. The graph will be derived by inspection of the network using special transforming T-graphs. The method is useful ...
  • A New Version of the Microstrip to Waveguide Transition 

    Machac, J. (Společnost pro radioelektronické inženýrství, 1992-10)
    A new version of the microstrip-to-waveguide transition is described and analyzed. It is the E-plane transition, where the stripe probe is substituted by a rectangular patch. The structure is very simple, easily adjustable, ...
  • Calibrating the Six-Port Reflectometer Using a Matched Load And Four Unity-Reflection Standards (Part 1) 

    Bilik, V. (Společnost pro radioelektronické inženýrství, 1992-10)
    An alternative six-port calibration procedure is described using an ideal matched load and four unity reflection standards. Not only offset short or open circuits can be used as the reflection standards but also arbitrary ...
  • Multi-Step Numerical Laplace Inversion 

    Biolek, Dalibor (Společnost pro radioelektronické inženýrství, 1992-10)
    An accurate numerical Laplace inversion algorithm is presented. In comparison with original multi-step inversion method, some improvements are made. The concrete Turbo Pascal routines are introduced.
  • The Waveguide Behaviour of the Ballistic Carriers in Confined Qantum States 

    Urban, F.; Allsopp, D.W.E.; Redhammer, R. (Společnost pro radioelektronické inženýrství, 1992-12)
    Peculiar waveguide properties of quantum waveguides are revealed using a new transfer matrix based approach in the numerical analysis of the quantum well structures. The approach is built on the solution of the 2D Schrodinger ...
  • Calibrating the Six-Port Reflectometer Using a Matched Load And Four Unity-Reflection Standards (Part 2) 

    Bilik, V. (Společnost pro radioelektronické inženýrství, 1992-12)
    A convenient and exact method of using a sliding load to the calibration of the single six-port reflectometer is described. Neither reflection coefficient nor positions of the sliding load settings need be known. Reflection ...
  • Standard Time and Frequency 

    Buzek, O.; Cermak, J. (Společnost pro radioelektronické inženýrství, 1992-12)
    The Institute of Radio Engineering and Electronics of the Czechoslovak Academy of Sciences (IREE), Prague, provides the national primary time a frequency reference for the Czechoslovak metrology. The paper describes main ...
  • The Directional Signal Filtering by Progressive Phasing 

    Novacek, Z. (Společnost pro radioelektronické inženýrství, 1992-12)
    The paper deals with a method of signal filtering in the feed network of a phased array. Two alternative ways of phase control are described here. Both of them enable to set several directions of zero reception independently ...
  • An Adaptive Antenna Array with the Time Multiplexed Signal Processing 

    Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 1992-12)
    An adaptive antenna array with the digital signal processing requires an independent receiver for each antenna element. This fact significantly influences the cost of the system. The presented paper answers the question ...
  • The Testing of Pseudorandom Generators Using Correlation Properties 

    Sebesta, V.; Kilian, P. (Společnost pro radioelektronické inženýrství, 1992-5)
    The statistical properties of a pseudorandom sequence being characterized by the distribution of the values near to the uniform distribution may differ from the expected ones. On doing a quantitative evaluation of the ...
  • Decomposed Implicit Models of Piecewise - Linear Networks 

    Brzobohaty, J.; Pospisil, J. (Společnost pro radioelektronické inženýrství, 1992-5)
    The general matrix form of the implicit description of a piecewise-linear (PWL) network and the symbolic block diagram of the corresponding circuit model are proposed. Their decomposed forms enable us to determine quite ...
  • Utilisation of Symmetry Properites for the Pattern Analysis of Mutually Coupled Patch Radiators 

    Gimersky, M.; Bornemann, J. (Společnost pro radioelektronické inženýrství, 1992-5)
    The influence of mutual coupling effects on the radiation pattern of microstrip antennas is investigated by introducing symmetry properties in the surface current distributions. The standard method of moments is used, which ...
  • WARC: The First and the Last 

    Cesky, T. (Společnost pro radioelektronické inženýrství, 1992-5)
    WARC-92 was the last of its kind. The "Last Big WARC". The process was very difficult and some refer to the conference as consensus by exhaustion, clearly demonstrating one of the reasons for restructuring the ITU. CEPT ...
  • Progressive Image Reconstruction Using Morphological Skeleton 

    Levicky, D.; Chromek, P. (Společnost pro radioelektronické inženýrství, 1992-5)
    This paper presents the results of a study on use of morphological skeleton to represent, progressive transmission and reconstruction of binary images. For images containing blobs and large areas, the skeleton subsets are ...
  • Optoelectrical Method of Measuring the Aircraft Track Velocity Vector 

    Ricny, V.; Mikulec, J. (Společnost pro radioelektronické inženýrství, 1992-5)
    This article deals with new principal and basic algorithm of the optoelectronics measuring method of aircraft track velocity vector using digital processing of video signals of CCD line sensors.
  • RF Power Amplifier Analysis 

    Pelikan, K.; Lokay, M. (Společnost pro radioelektronické inženýrství, 1993-04)
    The special program is presented for the demonstration of RF power transistor amplifiers for the purposes of the high-school education in courses of radio transmitters. The program is written in Turbo Pascal 6. 0 and enables ...
  • TOPNET2. 2- CAD Program for CATV Network Design 

    Hudec, P. (Společnost pro radioelektronické inženýrství, 1993-04)
  • Programme Code for Projecting of WDM Fiber Optic Sensor Systems 

    Turan, J.; Probstner, R. (Společnost pro radioelektronické inženýrství, 1993-04)
    Wavelength division multiplex (WDM) offers a potentially powerful technique for use within optical fibre sensor systems. The paper deals with short description of methodology and a programme code for WDM fiber optic sensor ...
  • Computer Simulation of Light Propagation in Photonic Waveguide Structures 

    Plesingr, J.; Ctyroky, J. (Společnost pro radioelektronické inženýrství, 1993-04)
    An interactive program for simulating light propagation through photonic waveguide structures was developed. From the viewpoint of CAD, two parts of this program are interesting: the channel waveguide editor, and the 3D ...