Ace Technologies Corporation

Sin Jae Kim

Se Young O

Dong-Wan Chun

Gwan Young Koo

Sang Yong Lee

Jae Kwang Yoon

Sung Soo Chung

Seong Min Lee

Jae Yong Koo

Jin-Yang Kim

A cavity filter for low PIMD using hybrid cap bolts includes: a housing having therein a plurality of cavities partitioned by separation walls and an open upper portion; an upper plate coupled onto the upper portion of the housing and provided therein with a plurality of tuning bolts; a plurality of air blowing work holes formed respectively on the upper plate and outer sidewalls of the housing and corresponding to the plurality of cavities; and a plurality of hybrid cap bolts formed of different kinds of materials of metal and non-metal so as to have repulsive forces against and to be coupled to respective plurality of air blowing work holes. Thus, metal debris present inside a cavity housing are removed through an air blowing method by using an air blowing work hole formed in a cavity housing and a hybrid cap bolt for reducing PIMD.

Cavity filter for low PIMD using hybrid cap bolt

An RF cavity filter is disclosed. The disclosed filter includes: a housing in which there is at least one cavity formed; a cover joined to an upper portion of the housing; at least one bolt inserted through at least one through hole formed in the cover; and at least one elastic element attached to the cover in an area below the through hole, where the bolt is inserted through the through hole to provide an external force on the elastic element, and the external force alters the shape of the elastic element. With the disclosed filter, pieces of metal debris created during tuning can be prevented from reaching the inside of the filter, and the degradation in the PIMD performance that would have otherwise occurred due to the pieces of debris can be avoided. Also, the filter can maintain a tuned state without the use of separate nuts.

RF cavity filter using elastic element and method for manufacturing the same

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Incheon, South Korea

Sin Jae Kim