EP1107346A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Duplexer having laminated structure
Assignee: Murata Manufacturing Co Ltd
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Filing: 2000-12-08
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Granted: —
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Expires: 2020-12-08
Abstract
Abstract A duplexer (41) having a laminated structure includes a first three-stage band-pass filter (BPF1) having parallel LC resonators (Q1, Q2, Q3), and a second three-stage band-pass filter (BPF2) having parallel LC resonators (Q4, Q5, Q6). The first (BPF1) and second three-stage band-pass filters (BPF2) are coupled through impedance matching patterns. An inductor (L1 - L6) of each of the resonators (Q1 - Q6) is formed by via-holes (61 - 66) formed on insulator sheets (42 - 49) which are connected in sequence in the laminating direction of the sheets (42 - 49).
Inventors
- 👤 Sadayuki Matsumura
- 👤 Noboru Kato
- 👤 Hiroko Nomura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:53
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2135
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A laminated type duplexer (41) having insulator
layers (42 - 49) stacked to form a laminate (100),
comprising: a plurality of filters (BPF1, BPF2) embedded in the
laminate, each of said filters (BPF1, BPF2) having an
inductor (L1, L2, L3, L4, L5, L6) and a capacitor (C1, C2,
C3, C4, C5, C6); wherein each of the inductors (L1, L2, L3, L4, L5, L6)
is formed by via-holes (61 - 66) being connected in sequence
in the direction of stacking of the insulator layers (42-49),
and at least two adjacent filters (BPF1, BPF2) of said
plurality of filters (BPF1, BPF2) are electrically connected
to each other through a matching inductor pattern (Ls1, Ls2).
References Cited (Backward Citations)
No citation records indexed.
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