GB1467387A - Tunable inductance or lc circuit - Google Patents
Tunable inductance or lc circuitInfo
- Publication number
- GB1467387A GB1467387A GB3158274A GB3158274A GB1467387A GB 1467387 A GB1467387 A GB 1467387A GB 3158274 A GB3158274 A GB 3158274A GB 3158274 A GB3158274 A GB 3158274A GB 1467387 A GB1467387 A GB 1467387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductance
- inductor
- printed
- capacitor
- abrasion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 abstract 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 238000009966 trimming Methods 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000005538 encapsulation Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 229910003445 palladium oxide Inorganic materials 0.000 abstract 1
- JQPTYAILLJKUCY-UHFFFAOYSA-N palladium(ii) oxide Chemical compound [O-2].[Pd+2] JQPTYAILLJKUCY-UHFFFAOYSA-N 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
- H03H5/02—One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N97/00—Electric solid-state thin-film or thick-film devices, not otherwise provided for
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Filters And Equalizers (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
1467387 Printed circuit assembly RCA CORPORATION 17 July 1974 [20 July 1973] 31582/74 Heading H1R A printed inductor is so designed that its inductance can be increased by removal of material. Typically it is a trimming inductor in a resonant LC circuit (Fig. 1) in series with a larger fixed inductor 14. The conductors 16, 18 and the capacitor electrodes 8, 12 may be of glass frit loaded with particles of silver, palladium and palladium oxide screen printed on alumina substrate 4 and fired, the capacitor dielectric 10 being of glass. The amount of trimming of the capacitor required to take the resonant frequency from an original value below the desired frequency to a value slightly above it is calculated and the top electrode notched by abrasion or laser machining to achieve this. Then, preferably after partial encapsulation, slots are formed in strips 20, 22, 24 in turn by abrasion, while the resonant frequency is monitored, to form a serpentine current path of increased inductance to complete the inductance. Fixed inductance 15 may be dispensed with when a lower inductance is required.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US38117873A | 1973-07-20 | 1973-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1467387A true GB1467387A (en) | 1977-03-16 |
Family
ID=23504012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3158274A Expired GB1467387A (en) | 1973-07-20 | 1974-07-17 | Tunable inductance or lc circuit |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5042369A (en) |
| CA (1) | CA1028436A (en) |
| DE (1) | DE2433376A1 (en) |
| FR (1) | FR2238289B1 (en) |
| GB (1) | GB1467387A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4008507A1 (en) * | 1989-03-23 | 1990-09-27 | Murata Manufacturing Co | LAMINATED LC FILTER |
| DE4011294A1 (en) * | 1989-04-12 | 1990-10-25 | Murata Manufacturing Co | Laminated noise and interference LC filter - has specified ratio of power inductances in regions forming capacitances |
| EP0500103A1 (en) * | 1991-02-21 | 1992-08-26 | Takeshi Ikeda | Laminate Type LC Element |
| GB2260223A (en) * | 1991-09-24 | 1993-04-07 | Mitsubishi Electric Corp | Hybrid microwave integrated circuit |
| CN109141689A (en) * | 2018-07-17 | 2019-01-04 | 东莞成启瓷创新材料有限公司 | A kind of low-temperature co-fired ceramics LTCC pressure sensor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4035695A (en) * | 1974-08-05 | 1977-07-12 | Motorola, Inc. | Microelectronic variable inductor |
| JPS6297416A (en) * | 1985-10-23 | 1987-05-06 | Fujitsu Ltd | Constituting method for chip type delay element |
| JP2725439B2 (en) * | 1990-05-17 | 1998-03-11 | 株式会社 村田製作所 | Frequency adjustment method for electronic components |
| US6189201B1 (en) * | 1999-03-19 | 2001-02-20 | Sino Dragon Inc. | Method of tuning a high frequency printed resonance circuit |
| US6980414B1 (en) | 2004-06-16 | 2005-12-27 | Marvell International, Ltd. | Capacitor structure in a semiconductor device |
-
1974
- 1974-06-11 CA CA202,172A patent/CA1028436A/en not_active Expired
- 1974-07-11 DE DE2433376A patent/DE2433376A1/en active Pending
- 1974-07-17 GB GB3158274A patent/GB1467387A/en not_active Expired
- 1974-07-17 FR FR7424805A patent/FR2238289B1/fr not_active Expired
- 1974-07-19 JP JP49083741A patent/JPS5042369A/ja active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4008507A1 (en) * | 1989-03-23 | 1990-09-27 | Murata Manufacturing Co | LAMINATED LC FILTER |
| DE4011294A1 (en) * | 1989-04-12 | 1990-10-25 | Murata Manufacturing Co | Laminated noise and interference LC filter - has specified ratio of power inductances in regions forming capacitances |
| DE4011294C2 (en) * | 1989-04-12 | 1998-08-20 | Murata Manufacturing Co | Laminated LC filter and process for its manufacture |
| EP0500103A1 (en) * | 1991-02-21 | 1992-08-26 | Takeshi Ikeda | Laminate Type LC Element |
| US5250915A (en) * | 1991-02-21 | 1993-10-05 | Takeshi Ikeda | Laminate type LC filter |
| GB2260223A (en) * | 1991-09-24 | 1993-04-07 | Mitsubishi Electric Corp | Hybrid microwave integrated circuit |
| US5233310A (en) * | 1991-09-24 | 1993-08-03 | Mitsubishi Denki Kabushiki Kaisha | Microwave integrated circuit |
| GB2260223B (en) * | 1991-09-24 | 1995-05-24 | Mitsubishi Electric Corp | Microwave integrated circuit |
| CN109141689A (en) * | 2018-07-17 | 2019-01-04 | 东莞成启瓷创新材料有限公司 | A kind of low-temperature co-fired ceramics LTCC pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5042369A (en) | 1975-04-17 |
| DE2433376A1 (en) | 1975-03-27 |
| FR2238289A1 (en) | 1975-02-14 |
| FR2238289B1 (en) | 1979-08-03 |
| CA1028436A (en) | 1978-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |