Patent ID: 11962058
Assignee: CHENGDU LINGYI COMMUNICATION TECHNOLOGY CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The circular filter assembly of claim 5, wherein the dielectric filter comprises two first resonant cavities, two second resonant cavities, a first T-shaped through groove, and a first coupling hole, the two first resonant cavities and the two second resonant cavities are respectively located at two ends of the dielectric filter, and the two second resonant cavities are located at an end away from the cascade matching window; the first T-shaped through groove comprises a first through groove and a second through groove, and the second through groove separates the two first resonant cavities; the first through groove separates the first resonant cavity and the second resonant cavity; an end of the second through groove is connected to the first through groove; the first coupling hole is located between the two second resonant cavities, and the same first surface of each of the first resonant cavity and the second resonant cavity is provided with a tuning blind hole; and the circular filter assembly is provided with a second surface opposite to the first surface, and the second feed blind hole is located in the second surface.