Ace Technologies Corporation

Kwang-Sun Park

Dong-Wan Chun

Jae-Ok Seo

Jung-Hak Ahn

Suk-Woo Lee

Sung-Soo Chung

A cavity filter is disclosed. The cavity filter includes: a housing in which at least one cavity is formed where the housing has a resonator held in the cavity; a cover joined to an upper portion of the housing; and a pressing member joined to the cover. An insertion area is formed in the cover for receiving the pressing member, where the insertion area includes a thin part that has a smaller thickness than the main body of the cover. The pressing member may be inserted in the insertion area to press the thin part. The pressing member includes an insert part that is inserted in the insertion area, and an elastic member that is joined to a lower portion of the insert part to press the thin part. The cavity filter can provide stable properties as the resonators are joined to the ground in a stable manner.

Cavity filter

A tunable filter for expanding tuning range includes: a housing, which has multiple cavities defined by partitions; a resonator contained in the cavity; at least one sliding member installed over the resonator; a main cover coupled to an upper portion of the housing; and at least one tuning element coupled to a lower portion of the sliding member and made of a metallic material. Tuning is accomplished by a sliding motion of the sliding member, and the resonator includes a cylindrical first conductor and a second conductor coupled to an upper portion of the cylindrical conductor, where a cross section of the second conductor is shaped as a circle with a portion removed such that an area of overlap between the tuning element and the second conductor is varied according to a sliding of the tuning element.

Tunable filter for expanding the tuning range

A frequency-tunable filter using a sliding system is disclosed. The frequency-tunable filter includes: a housing, in which a multiple number of cavities are defined by partitions; a sub-cover, which is coupled to an upper portion of the housing and in which a guide groove is formed; at least one sliding member installed in the guide groove; a main cover coupled to an upper portion of the sub-cover; a resonator held in the cavity; and at least one tuning element coupled to a lower portion of the sliding member to be inserted inside the housing, where tuning is achieved by a sliding movement of the sliding member, and at least one first guide member is coupled to at least one side surface of the sliding member such that the first guide member guides a sliding movement by way of contact with the side surface of the guide groove.

Growing community of inventors

Suwon-si, South Korea

Kwang-Sun Park