MICROWAVE ATTENUATOR Russian patent published in 2015 - IPC H01P1/22 

FIELD: measurement equipment.

SUBSTANCE: invention relates to radio electronics and measurement equipment and may be used for specified weakening of a microwave signal of high capacity in a wide band of working frequencies. The microwave attenuator comprises a dielectric substrate 1, three film resistors 2, 4 and 5, connected to each other in the form of a symmetrical T-shaped structure, in which values of extreme resistors 2 and 5 are equal to each other, and the value of the middle resistor 4 is selected on the basis of the condition of matching mode maintenance. At the same time film resistors 2, 4 and 5 are made in the form of a resistive film applied on one side of the dielectric substrate, on the other side of which there is a metallised base applied. In the field of high frequencies the film resistors 2, 4 and 5 represent sections of microstrip transmission lines of identical length with longitudinal dissipative losses, besides, extreme film resistors 2 and 5 of the symmetrical T-shaped structure are connected to each other with a section of a microstrip transmission line without dissipative losses 3, length of which is equal to length of extreme film resistors 2 and 5 and to the middle of which one end of the middle film resistor 4 is connected, the other end of which is connected with the metallised base.

EFFECT: exceeded permissible capacity of an input microwave signal in a band of working frequencies.

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