(19)
(11) EP 0 556 573 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.10.1993 Bulletin 1993/42

(43) Date of publication A2:
25.08.1993 Bulletin 1993/34

(21) Application number: 93100741.3

(22) Date of filing: 19.01.1993
(51) International Patent Classification (IPC)5: H01P 1/205
(84) Designated Contracting States:
DE GB SE

(30) Priority: 22.01.1992 JP 9207/92
03.04.1992 JP 29056/92 U
28.10.1992 JP 312720/92

(71) Applicant: MURATA MANUFACTURING CO., LTD.
Nagaokakyo-shi Kyoto-fu 226 (JP)

(72) Inventors:
  • Matsumoto, Haruo, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Yamada, Yasuo, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Kitaichi, Yukihiro, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Yorita, Tadahiro, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Kato, Hideyuki, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Tsujiguchi, Tatsuya, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Mori, Hisashi, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)
  • Tada, Hitoshi, c/o Murata Manufac. Co., Ltd.
    Nagaokakyo-shi, Kyoto-fu (JP)

(74) Representative: Schoppe, Fritz, Dipl.-Ing. 
Patentanwalt, Georg-Kalb-Strasse 9
D-82049 Pullach
D-82049 Pullach (DE)


(56) References cited: : 
   
       


    (54) Dielectric resonator and its characteristic adjusting method


    (57) Dielectric resonator (1) wherein an internal conductor non-formed portion is provided near one open face of the internal conductor formed holes, and signal input, output electrodes (9,10) are provided on one portion of the external conductor (4), whereby electromagnetic field leakage is restrained, because the open face is not formed, and individual parts such as signal input, output pins and so on are not required.






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