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387 research outcomes, page 1 of 39
  • publication . Article . 2018
    Open Access
    Authors:
    V. G. Nechaev; A. S. Zagorodny; A. I. Dobrikov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    The article is devoted to investigation of microwave power converter temperature dependence caused by changes in the current-voltage characteristic of diodes. The analytical expressions are given for such diode parameters as junction resistance and diode saturation curr...

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  • publication . Article . 2016
    Open Access Russian
    Authors:
    H. G. Arzumanyan; H. A. Gomtsyan; O. J. Sevoyan;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The methods of the high speed data processing and transmission systems, operating with large number of analog and digital sensors are investigated. Real time clock (RTC) device uses as system time generator for nonstop synchronous work. RTC is calibrated using the GPS s...

  • publication . Article . 2019
    Open Access Russian
    Authors:
    Panchenko, Valery A.; Telegin, Viktor A.; Romanova, Natalia Yu.;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    Introduction. It was previously reported that small-scale irregularities (SSI) in the polar ionosphere are elongated along the magnetic field and anisotropic in its cross-field direction. At the same time, the largest of the SSI cross-field axes tends to orient along th...

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  • publication . Article . 2015
    Open Access Russian
    Authors:
    A. D. Grigoriev; B. O. Djalilov;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    First results of the development of a tunable antenna for cellular phones operating in the standard LTE are presented. The antenna consists of high- and low-frequency branches, the latter one is tuned by digital-controlled capacitor. Computer simulation of the antenna w...

  • publication . Article . 2016
    Open Access Russian
    Authors:
    A. V. Tumarkin; S. V. Razumov; A. G. Gagarin; A. M. Cherniavskii; N. A. Yalymov; M. V. Zlygostov; A. A. Poteshkina; Y. A. Uvarenkova; V. I. Ivanova;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    Structural and radio frequency (RF) dielectric properties of thin films of ferroelectric solid solutions BaZrxTi1-xO3 and BaSnxTi1-xO3 obtained by RF magnetron sputtering of ceramic targets on Pt/ r-cut of Al2O3 sapphire substrate are investigated. A high tunability of ...

  • publication . Article . 2019
    Open Access
    Authors:
    L. A. Aronov; V. N. Ushakov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    Introduction. Among acousto-optic spectrum analyzers with spatial integration, schemes based on optical interferometers provide the largest dynamic range. Nevertheless, they form the signal amplitude spectrum on a certain spatial carrier. Formation of quadrature compone...

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  • publication . Article . 2020
    Open Access
    Authors:
    A. S. Podstrigaev; A. V. Smolyakov; I. V. Maslov;
    Persistent Identifiers
    Publisher: St. Petersburg Electrotechnical University LETI

    Introduction. Simultaneous operation of numerous sources of radio emission form complex signal environment. Different devices with the common name “wideband analyzers” (WBA) are widely used to analyze and to control such environment. There is currently a need for develo...

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  • publication . Article . 2018
    Open Access Russian
    Authors:
    A. A. Bludov; G. A. Gorbatovskij; V. S. Pavlov; A. F. Suvorov;
    Persistent Identifiers
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    The article proposes a solution of a problem of polarization error compensation for radar object direction finding by means of conical scan method. The solution is considered at signal processing level that makes possible to avoid polarization limitations in antennas en...

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  • publication . Article . 2015
    Open Access Russian
    Authors:
    G. N. Tsitsikyan; S. S. Vandyshev; Y. D. Baranov;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    Expressions for an assessment of efficiency of the damping filters of the third order in power networks are received. On the basis of these expressions graphic dependences at various parameters of filters are given.

  • publication . Article . 2015
    Open Access Russian
    Authors:
    R. R. Abdullin; S. N. Shabunin;
    Publisher: Saint Petersburg Electrotechnical University "LETI"

    A leaky-wave antenna based on the partially-filled rectangular waveguide with transverse slots is investigated. Using tensor Green’s functions for antenna radiation analysis is suggested. A transcendental equation for a complex wavenumber obtained by matching magnetic f...

387 research outcomes, page 1 of 39