V.B. Bayburin1, V.V. Komarov2, V.P. Meshanov3, M.I. Balakin4, V.A. Kirkitsa5

1,2,4,5 Yuri Gagarin State Technical University of Saratov (Saratov, Russia)

3 NPP “Nika-SVCh” LLC (Saratov, Russia)

Currently, one of the most promising and widely used filters for the microwave range is a cross-shaped symmetrical bandpass filter. Changing the shape of a cross-shaped symmetrical bandpass filter leads to the formation of a Fano resonance in its frequency response. The Fano resonance effect can be used in the design of ultra-sensitive sensors, ultra-compact antennas and lasers. But due to the small number of works devoted to the use of the Fano resonance in the microwave range, there is a need for an analytical study of the influence of filter parameters on the Fano resonance in a cross-shaped band pass filter. The purpose of our work is to study the influence of geometric parameters of the filter on its frequency response with Fano resonance. As a result, the frequency characteristics of a cross-shaped asymmetric bandpass filter were constructed at different values of the parameters of the analytical filter circuit. The capacitance of the capacitor, the inductance and resistance of the coils, the load resistance, as well as the number of circuits were used as parameters. In accordance with this, the influence of the circuit parameters on the shape of the Fano resonance was considered.

The investigations was funded by Russian Science Foundation (project № 22-19-00357, https://rscf.ru/project/22-19-00357/).

Bayburin V.B., Komarov V.V., Meshanov V.P., Balakin M.I., Kirkitsa V.A. Analytical Fano resonance models for frequency-selective microwave surfaces. Radiotekhnika. 2022. V. 86. № 10. P. 155−164. DOI: https://doi.org/10.18127/j00338486-202210-18 (In Russian)

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