Patent Number: 6,294,969

Title: Dielectric filter and RF apparatus employing thereof

Abstract: A dielectric filter includes a dielectric block having multiple through holes which are created in parallel and grooves which are created around the opening of the through holes. A conductor is formed inside the grooves and the through holes. The inside conductors and in-groove conductors are connected at the opening of the through hole surrounded with the groove. The inside conductors and an outside conductor are connected at a second end. The opening of the through hole is formed inside an open-circuit end of the dielectric block.

Inventors: Matsuo; Michiaki (Kanagawa, JP), Yabuki; Hiroyuki (Kanagawa, JP), Sagawa; Morikazu (Tokyo, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: H01P 1/20 (20060101); H01P 1/205 (20060101); H01P 001/20 (); H01P 007/04 (); H01P 005/12 ()

Expiration Date: 09/25/2018