SHORT-WAVE TRANSMITTER HARMONIC FILTER Russian patent published in 2019 - IPC H03H7/09 H03H7/12 

FIELD: radio equipment.

SUBSTANCE: harmonic filter of the short-wave transmitter contains in its middle part N medium inductor coils, the first and second variable capacitor, N input L-shaped links, containing in the longitudinal arm of the input inductor, N output L-shaped links, containing in the longitudinal arm an output inductor, with each input L-shaped link containing at the output in the transverse arm the first fixed capacitor, and each output L-shaped link contains, at the input in the transverse arm, a second constant capacitor, each middle inductor and its associated inductive coupling input and the output coils of the inductance of the corresponding input and output L-shaped links are made in the form of three cylindrical windings interconnected at a certain distance from each other, interconnected, however, the direction of winding of the middle inductor is opposite to the direction of winding of the input and output inductors of the corresponding input and output L-shaped links.

EFFECT: technical result is to increase the power of the transmitted signal while reducing the overall dimensions.

3 cl, 1 dwg