MICROWAVE FILTER WITH POSSIBILITY OF ADJUSTMENT OF FERRITE RESONATOR Russian patent published in 2010 - IPC H01P1/217 

FIELD: electricity.

SUBSTANCE: superhigh frequency filter includes microstrip foundation with input and output microstrip lines arranged on its external surface and connected to each other by means of microstrip conductor, and spherical ferrite resonator. To the filter there introduced is the second foundation with input and output microstrip lines arranged on its external surface and connected to each other by means of microstrip conductor; in microstrip foundations there made are cone-shaped holes; at that, foundations are combined with each other by means of internal surfaces with possibility of providing coaxiality of holes for accurate positioning of spherical ferrite resonator in holes; dielectric elements are made in the form of thin layers; microstrip conductors on each foundation are made in the form of coils forming Helmholtz coils and enveloping spherical ferrite resonator; at that, dielectric elements are located on microstrip foundations with possibility of providing electric contact of input and output microstrip lines through the coil of microstrip conductor and with simultaneous elimination of direct electric contact of input and output microstrip lines.

EFFECT: increasing the rejection level of filter, obtaining maximum homogeneous magnetic field at the location point of spherical ferrite resonator for providing the repeatability of electric characteristics of filter during its manufacture.

2 cl, 4 dwg