US6097268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer duplexer with no shielding electrodes
Assignee: Murata Manufacturing Co Ltd
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Filing: 1997-08-21
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Granted: 2000-08-01
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Expires: 2017-08-21
Abstract
Abstract A high-frequency component which requires no shielding electrodes and in which there are no limitations upon the places where plural sets of filter components can be formed. In one embodiment, a high-frequency component has first to third ports, and includes a BPF connected between the first port and the second port and a BRF connected between the first port and the third port. The BPF and BRF comprise transmission lines and capacitors formed on a plurality of laminated dielectric layers. In another embodiment, the component comprises an HPF and an LPF formed on a plurality of dielectric layers. In both cases, the passbands of the respective filters are predetermined not to substantially overlap one another.
Inventors
- 👤 Takahiro Watanabe
- 👤 Norio Nakajima
- 👤 Mitsuhide Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:01
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2135
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A high-frequency component comprising a multi layer substrate formed of a laminated plurality of dielectric layers, and at least two filters having respective substantially non-overlapping frequency pass bands, said at least two filters being formed of inductance elements and capacitance elements, said inductance and capacitance elements comprising electrodes formed on corresponding dielectric layers in said multilayer substrate; at least two of said electrodes, each being in a respective one of said at least two filters, being disposed side-by-side on a single layer in said multilayer substrate with exclusively non-conductive material between them; wherein each of said at least two electrodes constitutes an inductor which is one of said inductance elements and coacts with said capacitance elements to define said frequency pass bands.
Claim 2
Dependent Claim
122 words
A high-frequency component comprising a multi layer substrate formed of a laminated plurality of dielectric layers, and at least two filters having respective substantially non-overlapping frequency pass bands, said at least two filters being formed of inductance elements and capacitance elements, said inductance and capacitance elements comprising electrodes formed on corresponding dielectric layers in said multilayer substrate; at least two of said electrodes, each being in a respective one of said at least two filters, being disposed side-by-side on a single layer in said multilayer substrate with exclusively non-conductive material between them; wherein each of said at least two electrodes constitutes an inductor which is one of said inductance elements and coacts with said capacitance elements to define said frequency pass bands.
Claim 3
Dependent Claim
209 words
A high-frequency component comprising a multilayer substrate formed of a laminated plurality of dielectric layers, and at least two filters having respective substantially non-overlapping frequency pass bands, said at least two filters being formed of inductance elements and capacitance elements, said inductance and capacitance elements comprising electrodes formed on corresponding dielectric layers in said multilayer substrate, wherein said at least two filters are made up of: strip line electrodes provided on corresponding surfaces of at least one of said dielectric layers for constituting said inductance elements, at least two of said strip lines, each being in a respective one of said at least two filters, being disposed side-by-side on a single one of said layers with exclusively non-conductive material between them; capacitor electrodes provided adjacent to corresponding surfaces of at least one of said dielectric layers for constituting said capacitance elements; ground electrodes provided on corresponding surfaces of at least one of said dielectric layers; and viahole electrodes penetrating said dielectric layers and interconnecting respective ones of said strip line electrodes, said capacitor electrodes and said ground electrodes; wherein each of said at least two strip lines constitutes an inductor which is one of said inductance elements and coacts with said capacitance elements to define said frequency pass bands.
Claim 4
Dependent Claim
209 words
A high-frequency component comprising a multilayer substrate formed of a laminated plurality of dielectric layers, and at least two filters having respective substantially non-overlapping frequency pass bands, said at least two filters being formed of inductance elements and capacitance elements, said inductance and capacitance elements comprising electrodes formed on corresponding dielectric layers in said multilayer substrate, wherein said at least two filters are made up of: strip line electrodes provided on corresponding surfaces of at least one of said dielectric layers for constituting said inductance elements, at least two of said strip lines, each being in a respective one of said at least two filters, being disposed side-by-side on a single one of said layers with exclusively non-conductive material between them; capacitor electrodes provided adjacent to corresponding surfaces of at least one of said dielectric layers for constituting said capacitance elements; ground electrodes provided on corresponding surfaces of at least one of said dielectric layers; and viahole electrodes penetrating said dielectric layers and interconnecting respective ones of said strip line electrodes, said capacitor electrodes and said ground electrodes; wherein each of said at least two strip lines constitutes an inductor which is one of said inductance elements and coacts with said capacitance elements to define said frequency pass bands.
Claim 5
Dependent Claim
26 words
The high-frequency component according to claim 1 or claim 2, wherein said at least two filters comprise a band pass filter and a band reject filter.
Claim 6
Dependent Claim
26 words
The high-frequency component according to claim 1 or claim 2, wherein said at least two filters comprise a high pass filter and a low pass filter.
Claim 7
Dependent Claim
23 words
The high-frequency component according to claim 1 or claim 2, wherein said at least two filters comprise at least one band pass filter.
Claim 8
Dependent Claim
23 words
The high-frequency component according to claim 1 or claim 2, wherein said at least two filters comprise at least one band reject filter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |