Novel direct current blocking device

Abstract

The invention discloses a novel DC block, which belongs to the technical field of microwave capacitor assembly, is of a coaxial structure, and comprises a DC block inner conductor, a DC block outer conductor and an insulating support, the DC block inner conductor comprises a first inner conductor, a second inner conductor and a third inner conductor, the DC block outer conductor comprises a first outer conductor, a second outer conductor, a third outer conductor and a fourth outer conductor, the two first inner conductors are respectively arranged in the second inner conductor and the third inner conductor, and the second inner conductor, the third inner conductor and the insulating support are arranged in the first outer conductor through interference fit; the microwave capacitor is assembled between the two first inner conductors, the side wall of the first outer conductor is provided with an opening, the position of the microwave capacitor corresponds to the position of the opening, and the second outer conductor is arranged in the opening of the first outer conductor. According to the novel DC block, multiple conversion links of'coaxial-microstrip-capacitance-microstrip-coaxial 'are canceled, so that signal reflection and energy loss caused by mode conversion and discontinuous impedance are reduced.

Images