公开(公告)号：EP2495804A4

公开(公告)日：2014-01-22

申请号：EP10826462

申请日：2010-09-29

Applicant: KYOCERA CORP

Inventor： HORIUCHI MASAFUMI ,  YOSHIKAWA HIROMICHI ,  NAKAMATA KATSURO ,  KUKITA SOUTAROU

IPC: H01P7/04 ,  H01P1/205 ,  H01P1/212

CPC classification number: H01P1/2053 ,  H01P1/2056 ,  H01P7/04

Abstract: [Problem] There is provided a coaxial resonator having a high Q value in the first resonant mode and a wide resonance frequency gap between the first resonant mode and the second resonant mode, as well as a dielectric filter, a wireless communication module, and a wireless communication device employing the same. [Solution] A coaxial resonator includes a dielectric block (10); a first inner conductor (13) disposed in an inner surface of a first through hole (11) which extends from a first main surface of the dielectric block to an opposite second main surface thereof, the first inner conductor (13) being connected to a reference potential at one side thereof ; and an outer conductor (15) disposed over side surfaces of the dielectric block (10), the outer conductor surrounding the first inner conductor (13), the outer conductor (15) being connected to the reference potential. There is a low-dielectric-constant portion in a location between the first inner conductor (13) and the outer conductor (15). The low-dielectric-constant portion surrounds a periphery of the first inner conductor (13) and is lower in dielectric constant than the dielectric block (10). A coaxial resonator having a high Q value in the first resonant mode and a wide resonance frequency gap between the first resonant mode and the second resonant mode can be obtained.

公开(公告)号：EP2963731A4

公开(公告)日：2016-10-12

申请号：EP14756716

申请日：2014-02-24

Applicant: KYOCERA CORP

Inventor： YOSHIKAWA HIROMICHI ,  HORIUCHI MASAFUMI ,  NAKAMATA KATSURO

IPC: H01P1/205 ,  H01P1/213

CPC classification number: H01P1/2002 ,  H01P1/2056 ,  H01P1/2136 ,  H01P7/04 ,  H01Q1/50 ,  H03H7/463

Abstract: There are provided a dielectric filter with excellent electrical characteristics, a duplexer, and a communication device using the dielectric filter. A dielectric filter includes a dielectric block (30) provided with first through holes (31a-31g); inner conductors (41a-41g) disposed on inner surfaces of the first through holes (31a-31g); second through holes (32a-32f); a terminal electrode (51a) connected to an inner conductor (41a) located at on end; a terminal electrode (51b) connected to an inner conductor (41g) located at the other end; and an outer conductor (21a, 21b) surrounding the dielectric block (30), being connected to a reference potential, wherein the first through holes (31a-31g) are located on a second main surface (30b) side, and the second through holes (32a-32f) are located on a first main surface (30a) side with respect to the first through holes (31a-31g). A duplexer and a communication device use this dielectric filter.

公开(公告)号：EP3200273A4

公开(公告)日：2018-05-23

申请号：EP15844059

申请日：2015-09-16

Applicant: KYOCERA CORP

Inventor： YOSHIKAWA HIROMICHI ,  HORIUCHI MASAFUMI ,  NAKAMATA KATSURO

IPC: H01P7/04 ,  H01P1/20 ,  H01P1/205 ,  H01P1/208 ,  H01P1/212 ,  H01P7/10

CPC classification number: H01P1/2002 ,  H01P1/2053 ,  H01P1/2084 ,  H01P7/04 ,  H01P7/10

Abstract: There are provided a compact resonator having excellent electrical characteristics, and a filter and a communication device that employ the resonator. A resonator includes a shield conductor (10), a columnar body (21), and a first dielectric body (12). The shield conductor (10) includes a first conductor (13) located on a negative z-direction side and a second conductor (14) located on a positive z-direction side, and has a cavity (19) therein. The columnar body (21) is composed of a dielectric body or a conductor and has a columnar shape, and is placed inside the cavity (19), an end in the negative z-direction thereof being joined to the first conductor (13), an interval being provided between an end in the positive z-direction of the columnar body and the shield conductor (10). The first dielectric body (12) is placed inside the cavity (19), an end in the positive z-direction thereof being joined to the second conductor (14), an interval being provided between an end in the negative z-direction of the first dielectric body and the shield conductor (10), the first dielectric body surrounding the columnar body (21) so as to be apart from each other.

公开(公告)号：EP2624361A4

公开(公告)日：2014-07-09

申请号：EP11829292

申请日：2011-09-29

Applicant: KYOCERA CORP

Inventor： YOSHIKAWA HIROMICHI ,  NAKAMATA KATSURO ,  HORIUCHI MASAFUMI

IPC: H01P7/04 ,  H01P1/205 ,  H01P1/212

CPC classification number: H01P7/04 ,  H01P1/2053 ,  H01P1/2056