Patent US6426683B1 successfully refreshed from Google Patents.
US6426683B1
Expired / Lapsed
US
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Integrated filter with improved I/O matching and method of fabrication
Assignee: NXP USA Inc
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Filing: 1999-11-09
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Granted: 2002-07-30
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Expires: 2019-11-09
Abstract
Abstract An integrated filter circuit and a method of fabrication are disclosed, wherein the integrated filter has an input and an output parasitic shunt impedance. Input and output electrical components are coupled to the input and output terminals, respectively, to reduce the input and output parasitic shunt impedances. The input and output electrical components each include one of a coil, a section of transmission line, a coil and tuneable capacitance connected in a series tuned circuit, or a coil and tuneable capacitance connected in a parallel tuned circuit. The integrated filter includes input and output multilayer ceramic integrated coils which may be positioned so that capacitive coupling between the coils substantially cancels inductive coupling therebetween, and/or an interlayer gridded ground wall is positioned between the input and output coils
Inventors
- 👤 Wang-Chang A. Gu
- 👤 Richard Stephen Kommrusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:30
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H9/00; H03H9/0004; H03H7/01; H03H7/17; H03H7/1741; H03H7/1758; H03H7/1775; H03H7/383; H03H9/02; H03H9/05; H03H9/0538; H03H9/0542
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
86 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter having an input terminal with input parasitic shunt impedance and an output terminal with output parasitic shunt impedance; an input electrical component coupled to the input terminal so as to reduce the input parasitic shunt impedance; an output electrical component coupled to the output terminal so as to reduce the output parasitic shunt impedance; and an interlayer gridded ground wall positioned between the input electrical component and the output electrical component to reduce intercoupling.
Claim 2
Dependent Claim
86 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter having an input terminal with input parasitic shunt impedance and an output terminal with output parasitic shunt impedance; an input electrical component coupled to the input terminal so as to reduce the input parasitic shunt impedance; an output electrical component coupled to the output terminal so as to reduce the output parasitic shunt impedance; and an interlayer gridded ground wall positioned between the input electrical component and the output electrical component to reduce intercoupling.
Claim 3
Dependent Claim
27 words
An integrated filter circuit with improved I/O matching as claimed in claim 1 wherein the input and output electrical components are integrated into the integrated filter circuit.
Claim 4
Dependent Claim
57 words
An integrated filter circuit with improved I/O matching as claimed in claim 1 wherein the input and output electrical components each include one of an inductive coil, a section of transmission line, an inductive coil and tunable capacitance connected in a series tuned circuit, and an inductive coil and tunable capacitance connected in a parallel tuned circuit.
Claim 5
Dependent Claim
23 words
An integrated filter circuit with improved I/O matching as claimed in claim 1 wherein the integrated filter includes a plurality of filter sections.
Claim 6
Dependent Claim
36 words
An integrated filter circuit with improved I/O matching as claimed in claim 4 wherein the plurality of filter sections each include a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 7
Dependent Claim
56 words
An integrated filter circuit with improved I/O matching as claimed in claim 4 wherein the plurality of filter sections each include an intermediate parasitic shunt impedance between adjacent coupled sections and the integrated filter circuit further includes an intermediate electrical component coupled to the adjacent coupled sections so as to reduce the intermediate parasitic shunt impedance.
Claim 8
Dependent Claim
136 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter having an input impedance at an input terminal and an output impedance at an output terminal; an input circuit having a source impedance coupled to the input terminal; an output circuit having a load impedance coupled to the output terminal; an input electrical component coupled to the input terminal so as to match the source impedance of the input circuit to the input impedance of the integrated filter at the input terminal; an output electrical component coupled to the output terminal so as to match the load impedance of the output circuit to the output impedance of the integrated circuit at the output terminal; and an interlayer gridded ground wall positioned between the input electrical component and the output electrical component to reduce intercoupling.
Claim 9
Dependent Claim
136 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter having an input impedance at an input terminal and an output impedance at an output terminal; an input circuit having a source impedance coupled to the input terminal; an output circuit having a load impedance coupled to the output terminal; an input electrical component coupled to the input terminal so as to match the source impedance of the input circuit to the input impedance of the integrated filter at the input terminal; an output electrical component coupled to the output terminal so as to match the load impedance of the output circuit to the output impedance of the integrated circuit at the output terminal; and an interlayer gridded ground wall positioned between the input electrical component and the output electrical component to reduce intercoupling.
Claim 10
Dependent Claim
24 words
An integrated filter circuit with improved I/O matching as claimed in claim 7 wherein the input impedance and output impedance both include parasitic capacitance.
Claim 11
Dependent Claim
27 words
An integrated filter circuit with improved I/O matching as claimed in claim 7 wherein the input and output electrical components are integrated into the integrated filter circuit.
Claim 12
Dependent Claim
57 words
An integrated filter circuit with improved I/O matching as claimed in claim 7 wherein the input and output electrical components each include one of an inductive coil, a section of transmission line, an inductive coil and tunable capacitance connected in a series tuned circuit, and an inductive coil and tunable capacitance connected in a parallel tuned circuit.
Claim 13
Dependent Claim
23 words
An integrated filter circuit with improved I/O matching as claimed in claim 7 wherein the integrated filter includes a plurality of filter sections.
Claim 14
Dependent Claim
36 words
An integrated filter circuit with improved I/O matching as claimed in claim 11 wherein the plurality of filter sections each include a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 15
Dependent Claim
56 words
An integrated filter circuit with improved I/O matching as claimed in claim 11 wherein the plurality of filter sections each include an intermediate parasitic shunt impedance between adjacent coupled sections and the integrated filter circuit further includes an intermediate electrical component coupled to the adjacent coupled sections so as to reduce the intermediate parasitic shunt impedance.
Claim 16
Dependent Claim
69 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, the input and output multilayer ceramic integrated coils being positioned adjacent each other; and an interlayer gridded ground wall positioned between the input and output multilayer ceramic integrated coils to reduce intercoupling.
Claim 17
Dependent Claim
69 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, the input and output multilayer ceramic integrated coils being positioned adjacent each other; and an interlayer gridded ground wall positioned between the input and output multilayer ceramic integrated coils to reduce intercoupling.
Claim 18
Dependent Claim
42 words
An integrated filter circuit with improved I/O matching as claimed in claim 14 wherein the plurality of multilayer ceramic integrated sections of the integrated filter each include a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 19
Dependent Claim
50 words
An integrated filter circuit with improved I/O matching as claimed in claim 14 wherein the input and output multilayer ceramic integrated coils are positioned so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic integrated coils.
Claim 20
Dependent Claim
89 words
An integrated filter circuit with improved I/O matching as claimed in claim 14 wherein the input multilayer ceramic integrated coil has an input impedance and the output multilayer ceramic integrated coil has an output impedance, and the integrated filter circuit further includes an input electrical component coupled to the input multilayer ceramic integrated coil so as to match the input impedance to an input circuit and an output electrical component coupled to the output multilayer ceramic integrated coil so as to match the output impedance to an output circuit.
Claim 21
Dependent Claim
101 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, the input and output multilayer ceramic integrated coils being positioned adjacent each other; an interlayer gridded ground wall positioned between the input and output multilayer ceramic integrated coils; the input and output multilayer ceramic integrated coils being positioned so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic integrated coils.
Claim 22
Dependent Claim
101 words
An integrated filter circuit with improved I/O matching comprising: an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, the input and output multilayer ceramic integrated coils being positioned adjacent each other; an interlayer gridded ground wall positioned between the input and output multilayer ceramic integrated coils; the input and output multilayer ceramic integrated coils being positioned so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic integrated coils.
Claim 23
Dependent Claim
89 words
An integrated filter circuit with improved I/O matching as claimed in claim 18 wherein the input multilayer ceramic integrated coil has an input impedance and the output multilayer ceramic integrated coil has an output impedance, and the integrated filter circuit further includes an input electrical component coupled to the input multilayer ceramic integrated coil so as to match the input impedance to an input circuit and an output electrical component coupled to the output multilayer ceramic integrated coil so as to match the output impedance to an output circuit.
Claim 24
Dependent Claim
42 words
An integrated filter circuit with improved I/O matching as claimed in claim 19 wherein the plurality of multilayer ceramic integrated sections of the integrated filter each include a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 25
Independent Claim
87 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter having an input multilayer ceramic integrated coil and output multilayer ceramic integrated coil; positioning the input and output multilayer ceramic integrated coils so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic intergrated coils; and positioning an interlayer gridded ground wall between the input and output multilayer ceramic integrated coils to reduce intercouplling.
Claim 26
Independent Claim
87 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter having an input multilayer ceramic integrated coil and output multilayer ceramic integrated coil; positioning the input and output multilayer ceramic integrated coils so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic intergrated coils; and positioning an interlayer gridded ground wall between the input and output multilayer ceramic integrated coils to reduce intercouplling.
Claim 27
Independent Claim
96 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter having an input terminal with input parasitic shunt impedance and an output terminal with output parasitic shunt impedance; forming an input electrical component coupled to the input terminal so as to reduce the output parasitic shunt impedance; forming an output electrical component coupled to the output terminal so as to reduce the output parasitic shunt impedance; and positioning an interlayer gridded ground wall between the input electrical component and the output electrical component to reduce intercoupling.
Claim 28
Independent Claim
96 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter having an input terminal with input parasitic shunt impedance and an output terminal with output parasitic shunt impedance; forming an input electrical component coupled to the input terminal so as to reduce the output parasitic shunt impedance; forming an output electrical component coupled to the output terminal so as to reduce the output parasitic shunt impedance; and positioning an interlayer gridded ground wall between the input electrical component and the output electrical component to reduce intercoupling.
Claim 29
Dependent Claim
58 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 22 wherein the step of forming the integrated filter includes forming a plurality of filter sections connected in series, each of the plurality of filter sections including a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 30
Dependent Claim
62 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 23 wherein the step of forming a plurality of filter sections includes forming each section with an intermediate parasitic shunt impedance between adjacent coupled sections and forming an intermediate electrical component coupled to the adjacent coupled sections so as to reduce the intermediate parasitic shunt impedance.
Claim 31
Dependent Claim
45 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 22 wherein the steps of forming the input electrical component and forming the output electrical component include integrating the input and output electrical components into the integrated filter circuit.
Claim 32
Dependent Claim
77 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 22 wherein the steps of forming the input electrical component and forming the output electrical component each include forming the input and output electrical components with one of an inductive coil, a section of transmission line, an inductive coil and tuneable capacitance connected in a series tuned circuit, and an inductive coil and tuneable capacitance connected in a parallel tuned circuit.
Claim 33
Independent Claim
76 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, positioning the input and output multilayer ceramic integrated coils adjacent each other; and forming an interlayer gridded ground wall between the input and output multilayer ceramic integrated coils to reduce intercoupling.
Claim 34
Independent Claim
76 words
A method of fabricating an integrated filter circuit with improved I/O matching comprising the steps of: forming an integrated filter including a plurality of multilayer ceramic integrated sections connected in series with an input multilayer ceramic integrated coil and an output multilayer ceramic integrated coil, positioning the input and output multilayer ceramic integrated coils adjacent each other; and forming an interlayer gridded ground wall between the input and output multilayer ceramic integrated coils to reduce intercoupling.
Claim 35
Dependent Claim
60 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 27 wherein the step of forming the integrated filter including the plurality of multilayer ceramic integrated sections includes forming each of the plurality of multilayer ceramic integrated sections with a surface acoustic wave resonator, a voltage variable capacitor, and a multilayer ceramic integrated coil.
Claim 36
Dependent Claim
75 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 28 wherein the step of forming the integrated filter with the input multilayer ceramic integrated coil and the output multilayer ceramic integrated coil includes positioning the input and output multilayer ceramic integrated coils so that capacitive coupling between the input and output multilayer ceramic integrated coils substantially cancels inductive coupling between the input and output multilayer ceramic integrated coils.
Claim 37
Dependent Claim
103 words
A method of fabricating an integrated filter circuit with improved I/O matching as claimed in claim 29 wherein the step of forming the integrated filter includes forming the input multilayer ceramic integrated coil with an input impedance and the output multilayer ceramic integrated coil with an output impedance, and the method further includes a step of coupling an input electrical component to the input multilayer ceramic integrated coil so as to match the input impedance to an input circuit and coupling an output electrical component to the output multilayer ceramic integrated coil so as to match the output impedance to an output circuit.
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) | 2005-07-29 | 2006-01-28 | 2006-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-07-29 | 2010-01-28 | 2010-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-07-29 | 2014-01-28 | 2014-07-30 | $7700.00 | Window Closed / Lapsed |