MICROWAVE FILTER Russian patent published in 2003 - IPC

FIELD: microwave frequency engineering. SUBSTANCE: microwave filter has flat conductors deposited on one side of insulating substrate whose other side carries grounding base. Substrate is disposed on bottom wall of case. Strip conductors and substrate with its grounding base form strip-type cavities. Extreme cavities of filter are physically connected to input and output transmission lines. Electrically isolated case cover has areas overlapped by side walls of case filled with insulating material. EFFECT: enhanced selectivity, reduced size, facilitated control and manufacture of filter. 4 cl, 4 dwg