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Information × Registration Number 0215U003758, 0113U001534 , R & D reports Title Development of spatially-advanced circuits of amplification and conversion of signals based on highly efficiency active devices popup.stage_title Head Vladimir G. Krizhanovski, Registration Date 23-03-2015 Organization Donetsk National University popup.description2 The analysis of discontinuity in the form of two interacting rectangular slot resonators in the microstrip line ground plane by transverse resonance method was performed. The discontinuity in the form of a symmetric H-shaped slot resonator with a longitudinal arrangement in the ground plane of a microstrip line was analyzed. On the basis of the step discontinuities analysis algorithm in the microstrip transmission line a broadband quarter-wave step transition from Chebyshev characteristic was designed, that matched microstrip transmission line with a characteristic impedance ratio R = 2.1. Analyzed the influence of the level of the input signal to the gate of the FET and the elements of the output circuit of the power amplifier on the spectral composition of the currents and voltages of saturated class F power amplifier. The method of load circuit design for microwave class F power amplifier with the addition of the third and fifth harmonic voltage was developed, which can compensate for the negative effect of the output capacitance and the inductance of the amplifier transistor. The Class E amplifier frequency model mode with drain modulation was built to describe the passage through the LF signal. A new design of a powerful class E oscillator having a band frequency tuning constant power output and constant high efficiency, which was not observed in existing designs. Method of measuring the characteristics of the instability of the oscillator in the time domain was developed and tested. Product Description popup.authors Єфимович Андрій Павлович Крижановський Володимир Володимирович Макаров Денис Григорович Рассохіна Юлія Валентинівна Чернов Дмитро Вікторович Чупіс Ганна Сергіївна popup.nrat_date 2020-04-02 Close