GB1409115A - Band-stop filters for electrical oscillations - Google Patents
Band-stop filters for electrical oscillationsInfo
- Publication number
- GB1409115A GB1409115A GB4219272A GB4219272A GB1409115A GB 1409115 A GB1409115 A GB 1409115A GB 4219272 A GB4219272 A GB 4219272A GB 4219272 A GB4219272 A GB 4219272A GB 1409115 A GB1409115 A GB 1409115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- band
- line
- circuits
- filters
- sept
- 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
- 230000010355 oscillation Effects 0.000 title 1
- 239000013078 crystal Substances 0.000 abstract 3
- 238000011161 development Methods 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/175—Series LC in series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/547—Notch filters, e.g. notch BAW or thin film resonator filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H2007/013—Notch or bandstop filters
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Filters And Equalizers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2145703A DE2145703C3 (de) | 1971-09-13 | 1971-09-13 | Bandsperre für elektrische Schwingungen unter Verwendung von Quarzen und kapazitiven Widerstandsübersetzungen in Form eines als überbriicktes T-Glied ausgebildeten Allpaßgliedes vierter Ordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1409115A true GB1409115A (en) | 1975-10-08 |
Family
ID=5819412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4219272A Expired GB1409115A (en) | 1971-09-13 | 1972-09-12 | Band-stop filters for electrical oscillations |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5236667B2 (it) |
| DE (1) | DE2145703C3 (it) |
| FR (1) | FR2153950A5 (it) |
| GB (1) | GB1409115A (it) |
| IT (1) | IT967368B (it) |
| NL (1) | NL156872B (it) |
| SE (1) | SE411503B (it) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5080050A (it) * | 1973-11-12 | 1975-06-28 | ||
| JPS5255354A (en) * | 1975-10-30 | 1977-05-06 | Nec Corp | Piezoelectric band erasing filter |
| AU4948190A (en) * | 1989-02-17 | 1990-09-05 | Europe Patent Limited | A device with a multi-phase load, a static converter and choke coils |
| US5030934A (en) * | 1989-07-05 | 1991-07-09 | Motorola, Inc. | Crystal notch filter comprising discrete quartz crystals coupled to a trimmable RC bridging network |
| GB201614150D0 (en) | 2016-08-18 | 2016-10-05 | Univ Oxford Innovation Ltd | Microfluidic arrangements |
-
1971
- 1971-09-13 DE DE2145703A patent/DE2145703C3/de not_active Expired
-
1972
- 1972-09-12 FR FR7232197A patent/FR2153950A5/fr not_active Expired
- 1972-09-12 IT IT29079/72A patent/IT967368B/it active
- 1972-09-12 GB GB4219272A patent/GB1409115A/en not_active Expired
- 1972-09-12 SE SE7211748A patent/SE411503B/xx unknown
- 1972-09-13 NL NL7212444.A patent/NL156872B/xx not_active IP Right Cessation
- 1972-09-13 JP JP47092175A patent/JPS5236667B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7212444A (it) | 1973-03-15 |
| JPS4838646A (it) | 1973-06-07 |
| DE2145703A1 (de) | 1973-03-22 |
| JPS5236667B2 (it) | 1977-09-17 |
| IT967368B (it) | 1974-02-28 |
| DE2145703B2 (de) | 1974-01-31 |
| DE2145703C3 (de) | 1974-08-15 |
| NL156872B (nl) | 1978-05-16 |
| SE411503B (sv) | 1979-12-27 |
| FR2153950A5 (it) | 1973-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |