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Information × Registration Number 0219U003044, 0117U002363 , R & D reports Title High-efficiency components of radio transmitting systems on the base of class-E amplifiers and oscillators, and 3D integrated circuit. popup.stage_title Head Kryzhanovski Volodymyr, Registration Date 16-01-2019 Organization Donetsk State University popup.description2 The theory of extended class E/F with flat drain voltage waveform was built; two class E/F amplifiers based on GaN HEMT CGH40025F was calculated, simulated and investigated at frequency 2.14 GHz with output network based on complex shape slot resonators (DGS structures in the form of H-shaped and dumb-bell slot resonators) and step discontinuities in microstrip transmission line, which fulfill the matching function at main frequency and the manipulation of higher harmonic simultaneously. The experimental comparative investigations of class E,E/F3 and EF were conducted, which allow obtain the such an operation mode of class E/F3 that demonstrates high energetic characteristics with relatively low peak voltage at drain. The new construction of power amplifier which operating mode combines the class E switching mode and inverse class F mode was presented. The technique of boundary problems solution was improved using transverse resonance for resonators based on 3D planar structures with discontinuity which components are placed in two planes simultaneously; the 2D eigen functions of magnetic end electric vector potentials were built in the form of series expansion by orthogonal Chebyshev polynomials of the first and second kind to describe current density in strip transmission line with step discontinuity. On the base of built algorithms, the analysis of distributed double-layered discontinuities in three-layered planar structures was conducted using more effective basis functions for 3D boundary problems algebraization. Product Description popup.authors Комаров В.Ф. Крижановський Володимир Григорович Макаров Д.Г. Рассохіна Ю.В. Чернов Д.В. popup.nrat_date 2020-04-02 Close