THEORETICAL STUDY OF THE FREQUENCY MULTIPLIER BASED ON IRREGULAR QUARTER-WAVELENGTH MICROSTRIP RESONATOR WITH THIN MAGNETIC FILM

Belyaev, B. A.; Izotov, A. V.; Leksikov, An. A.; Solovev, P. N.; Tyurnev, V. V. Russian Physics Journal. DOI https://doi.org/10.1007/s11182-021-02191-y

The characteristics of a frequency doubler on a resonant microstrip structure with a thin magnetic film were studied theoretically. The electrodynamic calculation of the structure was performed within the quasi-static approximation. Nonlinear response of film magnetization was calculated taking into account the second-order terms in the Landau-Lifshitz equation. The frequency response of the microstrip resonator was calculated. It was shown that due to the use of the resonant circuit, high efficiency of the input signal energy conversion into the output signal at a doubled frequency was achieved. The optimal values of the magnitude and direction of an external static magnetic field, which ensure the maximum output power at a doubled frequency, were determined.