Formation of Notch Filters for Transmitting and Receiving Microwave Equipment Based on Double Ring Resonators

Known theoretical and experimental data on the use of ring cut resonators for the formation of notch filters in the microwave frequency range. Such resonators make it possible to obtain a high-Q filter with smaller linear dimensions in comparison with a strip filter. When studying the overall parameters of the topology of the double ring cut resonator, it can be seen that the main parameters affecting the output amplitude-frequency characteristics are the width of the strip line that forms the resonator, the length and gaps. Accordingly, design ratios are required that include the quantities described.