Low-pass filter in rectangular wave-guide using circular posts. (Machine-translation by Google Translate, not legally binding)

Low-pass filter in rectangular waveguide using circular poles, characterized in that they use circular poles as impedance inverters of capacitive type, and the radius of each circular pole introduced in the structure is variable, in order to obtain the inverter values of impedance required to synthesize the desired transfer function. (Machine-translation by Google Translate, not legally binding) Filtro paso-bajo en guía-onda rectangular usando postes circulares, caracterizado porque utilizan postes circulares como inversores de impedancia de tipo capacitativo, y el radio de cada poste circular introducido en la estructura es variable, con el fin de obtener los valores de inversores de impedancia requeridos para sintetizar la función de transferencia deseada.