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41. 发明专利

JPH05167318A ORTHOGONAL TM MULTIPLE MODE DIELECTRIC 失效
公开(公告)号：JPH05167318A
公开(公告)日：1993-07-02
申请号：JP33071891
申请日：1991-12-13
申请人： MURATA MANUFACTURING CO
发明人： ISHIKAWA YOHEI , ABE SHUICHI , ANDO MASAMICHI
IPC分类号： H01P1/208 , H01P7/10
摘要： PURPOSE:To suppress the reduction of Qo caused by the bend of an electric line of force at a cross part of the columnar dielectrics for an orthogonal TM multiplex mode dielectric resonator device. CONSTITUTION:The pierced holes 2a and 2b are formed at an area which encloses a cross part of the columnar dielectrics 1a and 1b. The bend of the electric line of force passing the dielectric 1a is suppressed toward the dielectric 1b owing to the presence of the hole 2b. Meanwhile the bend of the electric line of force passing the dielectric 1b is suppressed toward the dielectric 1a owing to the presence of the hole 2b respectively.

42. 发明专利

JPH036466A METHOD FOR MEASURING INTERMODULATION STRAIN 失效
公开(公告)号：JPH036466A
公开(公告)日：1991-01-11
申请号：JP14068489
申请日：1989-06-02
申请人： MURATA MANUFACTURING CO
发明人： ISHIKAWA YOHEI , HIRATSUKA TOSHIRO , ABE HIROTSUGU , TAKAGAKI TAKASHI , YAMASHITA SADAO , ANDO MASAMICHI
IPC分类号： G01R23/20 , G01N22/00 , H01P7/10
摘要： PURPOSE:To measure the intermodulation strain generated in the boundary line of a dielectric and a silver electrode by arranging the dielectric or the dielectric to which a silver electrode is applied in a cavity and emitting input signals respectively having different wavelengths to compare respective outputs. CONSTITUTION:Three dielectric resonation bodies 28 are fixed to the support stand 24 in a cylindrical cavity 2 closed electromagnetically at first. Next, two resonation bodies on both sides thereof are replaced with dielectric resonation bodies 30 composed of the same dielectric as the resonation bodies 28 and having silver electrodes 34 to be measured applied thereto. In these two cases, input signals having different wavelengths are emitted from two input loops 22 provided to both ends of the cavity 14 and the outputs in the respective cases are taken out of an output loop 40. When both outputs are compared with each other, the intermodulation strain generated at the boundary part of each resonation body 30 and the electrode 34 applied thereto is calculated from the difference between said outputs.

43. 发明专利

JP2003188605A LOW-PASS FILTER 审中-公开
公开(公告)号：JP2003188605A
公开(公告)日：2003-07-04
申请号：JP2001384880
申请日：2001-12-18
申请人： MURATA MANUFACTURING CO
发明人： TSUNODA KIKUO , ANDO MASAMICHI , TAKEI YASUNORI
IPC分类号： H01P1/202 , H01P1/212
摘要： PROBLEM TO BE SOLVED: To constitute a low-pass filter that is easy to build, excellent in vibration resistance and in impact resistance and can suppress the effect of a spurious resonance peak. SOLUTION: The inner conductors are made integrally connecting a plurality of cylindrical inner conductors 101 to 111 each different in diameter. This inner conductor is disposed inside an outer conductor whose ends are Φ a and Φ b in diameters with different sizes in half way. The axial lengths len 107, 109, 111 of the inner conductors 107, 109, 111 which form a high impedance section are made shorter than the aixal lengths len 101, 103, 105 of the other inner conductors 101, 103, 105 which form the other high impedance section. The diameters of the inner conductors 101, 103, 105, 107, 109, 111 are made larger than the predetermined minimum. COPYRIGHT: (C)2003,JPO

44. 发明专利

JP2001136004A DIELECTRIC FILTER, COMPOSITE DIELECTRIC FILTER, DIELECTRIC DUPLEXER, DIELECTRIC DIPLEXER AND COMMUNICATION UNIT 失效
公开(公告)号：JP2001136004A
公开(公告)日：2001-05-18
申请号：JP31309799
申请日：1999-11-02
申请人： MURATA MANUFACTURING CO
发明人： ANDO MASAMICHI , TANAKA NORIHIRO , SASAI HIDEKAZU
IPC分类号： H01P1/20 , H01P1/208 , H01P1/213 , H01P7/10
摘要： PROBLEM TO BE SOLVED: To obtain a dielectric filter, a composite dielectric filter, a dielectric duplexer, and a dielectric diplexer where isolation among adjacent dielectric resonators is ensured to prevent the filter characteristic from being deteriorated and to obtain a communication unit employing them. SOLUTION: The dielectric filter is configured of dielectric resonators R1a, R1b,...R3b, R3c each consisting of a dielectric core placed in each cavity and coupling loops 3a, 3ab, 3bc, 3c that are respectively coupled with the dielectric resonators in a prescribed resonance mode. The dielectric resonators and the coupling loops are arranged so that the directions of the adjacent coupling loops are almost perpendicular to each other as the dielectric resonators approach each other.

45. 发明专利

JPH09306605A HIGH FREQUENCY CONNECTOR 失效
公开(公告)号：JPH09306605A
公开(公告)日：1997-11-28
申请号：JP11992896
申请日：1996-05-15
申请人： MURATA MANUFACTURING CO
发明人： ANDO MASAMICHI , KUBO HIROYUKI
IPC分类号： H01R13/03 , H01R17/12 , H01R17/04
摘要： PROBLEM TO BE SOLVED: To provide a high frequency connector which can be constructed at a low cost, exhibits good endurance against environment, and can suppress generation of inter modulation distortion by subjecting a non-magnetic parent material to electroless plating with a Ni alloy containing P, and thereby forming a housing or a center conductor. SOLUTION: A center conductor 2 is installed in a housing 1 as an external conductor where an insulative material 3 is interposed, and thereby a high frequency connector is constructed. The housing 1 or the center conductor 2 is formed from a parent material which consists of a non-magnetic substance having a high tensile strength such as beryllium copper and is covered with a electroless plated film of P-containing Ni alloy. This electroless plated film should favorably contain P in an amount more than 5wt.% of Ni. The P- containing Ni alloy film exhibits a high endurance against environment and a magnetic permeability as low as approx. 1.0 at 1GHz. Accordingly there is no drop in the skin depth due to the permeability, and the current concentration to the facial layer is relieved to lead to suppression of the mutual modulative distortion.

46. 发明专利

JPH0964615A DIELECTRIC RESONATOR DEVICE 失效
公开(公告)号：JPH0964615A
公开(公告)日：1997-03-07
申请号：JP21185495
申请日：1995-08-21
申请人： MURATA MANUFACTURING CO
发明人： HATTORI JUN , SONODA TOMIYA , ANDO MASAMICHI
IPC分类号： H01P1/20 , H01P1/208 , H01P5/04 , H01P7/10
摘要： PROBLEM TO BE SOLVED: To reduce frequency variation and to attain the standardization irrespective of requested coupling coefficient by connecting two dielectric cylindrical resonators having the same axial direction through a conductor loop. SOLUTION: Grooves (g) are formed on two dielectric cylinder intersecting parts in each of composite dielectric cylinders 10a, 10b, a difference is provided for resonance frequency bands between an odd mode and an even mode generated respectively in dielectric cylinder 11a, 12a and 11b, 12b and two resonators consisting of the cylinders 11a, 12a and 11b, 12b are mutually connected. Frequency adjusting holes 13a, 14a, 13b, 14b are respectively provided magnetic field generated by the cylinders 11a, 11b having the same axial direction and a connecting member 3 obtained by bending a metallic plate are formed on the parts of the opposite faces of cavities 15a, 15b. Magnetic field connection between the two cylinders 11a, 11b is attained through the member 3. Although the coupling coefficient can be changed by adjusting the loop area of the member 3, the change is small and is made zero by selecting the dimensions of the member 3 and the windows 29.

47. 发明专利

JPH0888571A HIGH FREQUENCY APPARATUS 失效
公开(公告)号：JPH0888571A
公开(公告)日：1996-04-02
申请号：JP22324094
申请日：1994-09-19
申请人： MURATA MANUFACTURING CO
发明人： HATTORI JUN , NISHIYAMA TAIYO , MOTOOKA YUTAKA , ANDO MASAMICHI
IPC分类号： H05K5/06 , H04B1/08
摘要： PURPOSE: To provide a high frequency apparatus which suppress the variance of characteristics such as Qe and the frequency characteristic even at the time of applying a stress to the vicinity of a connector attaching part. CONSTITUTION: A front prate 110 as a part or the conductor case or the high frequency apparatus is provided with a louvered part 111, and a signal input/ output connector 2 is fixed to this part 111 by screws. Thus, a bending stress or the like is received by the louvered part 111 as a part of the conductor case even if being stress applied to the signal input/output connector 2, and this stress doesn't deform the conductor case itself on the signal input/output connector attaching face, and therefore, the variance in characteristics of the high frequency apparatus due to deformation of the conductor case is prevented.

48. 发明专利

JPH0884008A MAGNETIC FIELD COUPLING INPUT/OUTPUT DEVICE AND DIELECTRIC RESONATOR 失效
公开(公告)号：JPH0884008A
公开(公告)日：1996-03-26
申请号：JP21881994
申请日：1994-09-13
申请人： MURATA MANUFACTURING CO
发明人： ANDO MASAMICHI
IPC分类号： H01P7/10 , H01P5/04 , H01P5/08
摘要： PURPOSE: To provide a magnetic field coupling input/output device where the adjustment range of Qe is extended without changing the influence upon the internal dielectric provided in the space in a microwave transmission circuit or in the space in or on the inside of a microwave resonator. CONSTITUTION: A main conductive plate 7 which is fixed to a metallic panel 5 and is not deformed and a conductive plate 8 for adjustment which is provided in the vicinity of the main conductive plate 17 and is nearer the metallic panel 5 than the main conductor 7 are provided, and the effective area of a loop for magnetic field coupling is changed by deformation of the conductive plate 8 for adjustment. Thus, Qe is adjusted in a wide range from the outside without using large-sized screws.

49. 发明专利

JPH07321506A TM DUAL MODE DIELECTRIC RESONATOR 失效
公开(公告)号：JPH07321506A
公开(公告)日：1995-12-08
申请号：JP11655294
申请日：1994-05-30
申请人： MURATA MANUFACTURING CO
发明人： ABE SHUICHI , HATTORI JUN , ANDO MASAMICHI
IPC分类号： H01P1/20 , H01P1/208 , H01P7/10
摘要： PURPOSE:To provide a TM dual mode dielectric resonator employing a band pass filter with an excellent attenuation characteristic. CONSTITUTION:Plural composite dielectric poles 10a, 10b, 10c are arranged side by side in a space surrounded by an outer conductor, and a direction of a coupling groove (g) provided in at least the composite dielectric pole 10c among the plural composite dielectric poles 10a, 10b, 10c is formed in crossing with the direction of the coupling grooves provided in the other composite dielectric poles 10a, 10b. Since signal coupling with an opposite phase is produced between the two composite dielectric poles whose forming directions of the coupling grooves (g) are in crossing resulting in producing an attenuation pole, the TM dual mode dielectric resonator acting like a band pass filter with an excellent attenuation characteristic is obtained. Furthermore, the attenuation characteristic is set over a broad range by properly setting the selectivity of the coupling direction of a magnetic field coupling window.

50. 发明专利

JPH07115307A DIELECTRIC DUPLEXER 失效
公开(公告)号：JPH07115307A
公开(公告)日：1995-05-02
申请号：JP28206293
申请日：1993-10-15
申请人： MURATA MANUFACTURING CO
发明人： ANDO MASAMICHI
IPC分类号： H01P1/20 , H01P1/208 , H01P1/213 , H01P7/10
摘要： PURPOSE:To improve the damping factor characteristic of a dielectric duplexer by improving the isolation properties between the transmitting and receiving filters in a simple structure. CONSTITUTION:The dielectric resonator filters 2a-3c constructing a transmitting filter are stored in a row in a conductor case together with the dielectric resonator filters 3a-3c constructing a receiving filter respectively. Then the ground junction is secured among the ground electrodes 6 of the adjacent filters 2a/3a, 2b/3b and 2c/3c respectively via the conductor pieces 11 like the metallic foils, etc.

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