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1. (WO2018180420) COMPOSITE FILTER DEVICE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/180420 International Application No.: PCT/JP2018/009476
Publication Date: 04.10.2018 International Filing Date: 12.03.2018
IPC:
H03H 7/01 (2006.01) ,H03H 7/38 (2006.01) ,H03H 7/46 (2006.01) ,H03H 9/64 (2006.01) ,H03H 9/72 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
01
Frequency selective two-port networks
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
38
Impedance-matching networks
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
46
Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46
Filters
64
using surface acoustic waves
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
70
Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source
72
Networks using surface acoustic waves
Applicants: MURATA MANUFACTURING CO., LTD.[JP/JP]; 10-1, Higashikotari 1-chome, Nagaokakyo-shi, Kyoto 6178555, JP
Inventors: YASUDA, Junpei; JP
TAKEUCHI, Morio; JP
Agent: MIYAZAKI & METSUGI; Chuo Odori FN Bldg., 3-8, Tokiwamachi 1-chome, Chuo-ku, Osaka-shi, Osaka 5400028, JP
Priority Data:
2017-07056531.03.2017JP
Title (EN) COMPOSITE FILTER DEVICE
(FR) DISPOSITIF DE FILTRE COMPOSITE
(JA) 複合フィルタ装置
Abstract:
(EN) Provided is a composite filter device with which an insert loss in the passband of a plurality of commonly connected bandpass filters can be effectively reduced. The composite filter device 1 is configured such that: one ends of a plurality of bandpass filters 4 to 7 are commonly connected; at least one bandpass filter 4 of the plurality of bandpass filters 4 to 7 includes a first filter 11, a switch 13, a second filter 12, and an impedance element 14 which is connected to the switch 13 and has an impedance higher than an input impedance value of the second filter 12; and the switch 13 is switched between a first state in which the first filter 11 and the second filter 12 are connected, and a second state in which the first filter 11 and the impedance element 14 are connected.
(FR) La présente invention concerne un dispositif de filtre composite avec lequel une perte d'insert dans la bande passante d'une pluralité de filtres passe-bande connectés en commun peut être efficacement réduite. Le dispositif de filtre composite (1) est configuré de telle sorte que : des premières extrémités d'une pluralité de filtres passe-bande (4 à 7) sont couramment connectées ; au moins un filtre passe-bande (4) de la pluralité de filtres passe-bande (4 à 7) comprend un premier filtre (11), un commutateur (13), un second filtre (12), et un élément d'impédance (14) qui est connecté au commutateur (13) et a une impédance supérieure à une valeur d'impédance d'entrée du second filtre (12) ; et le commutateur (13) est commuté entre un premier état dans lequel le premier filtre (11) et le second filtre (12) sont connectés, et un second état dans lequel le premier filtre (11) et l'élément d'impédance (14) sont connectés.
(JA) 共通接続されている複数の帯域通過型フィルタの通過帯域内の挿入損失を効果的に小さくし得る、複合フィルタ装置を提供する。 複数の帯域通過型フィルタ4~7の一端同士が共通接続されており、複数の帯域通過型フィルタ4~7のうち、少なくとも1つの帯域通過型フィルタ4が、第1のフィルタ11と、スイッチ13と、第2のフィルタ12と、スイッチ13に接続されており、第2のフィルタ12の入力インピーダンス値よりも高いインピーダンス素子14とを有し、スイッチ13は、第1のフィルタ11と、第2のフィルタ12とを接続している第1の状態と、第1のフィルタ11とインピーダンス素子14とを接続している第2の状態との間で切り換えられるように構成されている、複合フィルタ装置1。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)