DISPOSITIVO DE FILTRO ELECTROMECANICO PARA UNA BANDA DE FRECUENCIA SELECCIONADA Y QUE TIENE UNAS CARACTERISTICAS DE CARGA DETERMINADA.

摘要

1,268,542. Electromechanical filters. WESTERN ELECTRIC CO. Inc. 23 April, 1969 [24 April, 1968], No. 20679/69. Heading H3U. A filter, similar to that of Fig. 2 of co-pending Application No. 20678/69 but without the tuning inductors, is constructed to different design criteria so as to have a relatively narrow passband characteristic.