GB2502090B - Filter circuitry - Google Patents
Filter circuitryInfo
- Publication number
- GB2502090B GB2502090B GB1208545.2A GB201208545A GB2502090B GB 2502090 B GB2502090 B GB 2502090B GB 201208545 A GB201208545 A GB 201208545A GB 2502090 B GB2502090 B GB 2502090B
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter circuitry
- circuitry
- filter
- 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 - Fee Related
Links
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
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
-
- 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
- H03H7/0153—Electrical filters; Controlling thereof
-
- 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
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H7/425—Balance-balance networks
- H03H7/427—Common-mode filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1291—Current or voltage controlled filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0078—Constructional details comprising spiral inductor on a substrate
-
- 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
-
- 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
- H03H7/1716—Comprising foot-point elements
- H03H7/1733—Element between different shunt or branch paths
-
- 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
- H03H7/1791—Combined LC in shunt or branch 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
- H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
- H03H7/425—Balance-balance networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
- Superheterodyne Receivers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1208545.2A GB2502090B (en) | 2012-05-15 | 2012-05-15 | Filter circuitry |
PCT/IB2013/053987 WO2013171700A1 (en) | 2012-05-15 | 2013-05-15 | Filter Circuitry |
US14/543,709 US9313053B2 (en) | 2012-05-15 | 2014-11-17 | Filter circuitry |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1208545.2A GB2502090B (en) | 2012-05-15 | 2012-05-15 | Filter circuitry |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201208545D0 GB201208545D0 (en) | 2012-06-27 |
GB2502090A GB2502090A (en) | 2013-11-20 |
GB2502090B true GB2502090B (en) | 2014-07-09 |
Family
ID=46458877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1208545.2A Expired - Fee Related GB2502090B (en) | 2012-05-15 | 2012-05-15 | Filter circuitry |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2502090B (en) |
WO (1) | WO2013171700A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9595935B2 (en) * | 2015-05-12 | 2017-03-14 | Qualcomm Incorporated | Active notch filter |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4808843A (en) * | 1985-04-10 | 1989-02-28 | Electric Power Research Institute | Method and means for damping supersynchronous oscillations in an AC power system |
JP2000308260A (en) * | 1999-04-15 | 2000-11-02 | Nissin Electric Co Ltd | Alternate current filter |
US20040041634A1 (en) * | 2002-08-30 | 2004-03-04 | Kabushiki Kaisha Toshiba | High-frequency power amplifier |
US20080287089A1 (en) * | 2005-11-20 | 2008-11-20 | Martin Alles | Input filter for image frequency suppression |
US20110133853A1 (en) * | 2009-12-04 | 2011-06-09 | Renesas Electronics Corporation | Semiconductor device with filter circuit |
CN202042905U (en) * | 2011-04-26 | 2011-11-16 | 湖北中兴电力试验研究有限公司 | Double tuned filter applied to automatic tracing compensation arc suppression coil complete device |
CN102394664A (en) * | 2011-11-04 | 2012-03-28 | 物联微电子(常熟)有限公司 | Frequency modulation reception device capable of automatic interference elimination and method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6842086B1 (en) * | 1999-08-20 | 2005-01-11 | Eagle Comtronics, Inc. | Two-pole notch filter |
TW200642257A (en) * | 2005-05-26 | 2006-12-01 | Wistron Neweb Corp | Low noise block downconverter |
-
2012
- 2012-05-15 GB GB1208545.2A patent/GB2502090B/en not_active Expired - Fee Related
-
2013
- 2013-05-15 WO PCT/IB2013/053987 patent/WO2013171700A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4808843A (en) * | 1985-04-10 | 1989-02-28 | Electric Power Research Institute | Method and means for damping supersynchronous oscillations in an AC power system |
JP2000308260A (en) * | 1999-04-15 | 2000-11-02 | Nissin Electric Co Ltd | Alternate current filter |
US20040041634A1 (en) * | 2002-08-30 | 2004-03-04 | Kabushiki Kaisha Toshiba | High-frequency power amplifier |
US20080287089A1 (en) * | 2005-11-20 | 2008-11-20 | Martin Alles | Input filter for image frequency suppression |
US20110133853A1 (en) * | 2009-12-04 | 2011-06-09 | Renesas Electronics Corporation | Semiconductor device with filter circuit |
CN202042905U (en) * | 2011-04-26 | 2011-11-16 | 湖北中兴电力试验研究有限公司 | Double tuned filter applied to automatic tracing compensation arc suppression coil complete device |
CN102394664A (en) * | 2011-11-04 | 2012-03-28 | 物联微电子(常熟)有限公司 | Frequency modulation reception device capable of automatic interference elimination and method |
Also Published As
Publication number | Publication date |
---|---|
WO2013171700A1 (en) | 2013-11-21 |
GB2502090A (en) | 2013-11-20 |
GB201208545D0 (en) | 2012-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20140102 AND 20140108 |
|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20140109 AND 20140115 |
|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20170706 AND 20170715 |
|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20170515 |