EP3568913A4 - Tunable filter systems, devices, and methods - Google Patents

Tunable filter systems, devices, and methods Download PDF

Info

Publication number
EP3568913A4
EP3568913A4 EP18738587.7A EP18738587A EP3568913A4 EP 3568913 A4 EP3568913 A4 EP 3568913A4 EP 18738587 A EP18738587 A EP 18738587A EP 3568913 A4 EP3568913 A4 EP 3568913A4
Authority
EP
European Patent Office
Prior art keywords
methods
devices
tunable filter
filter systems
systems
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.)
Withdrawn
Application number
EP18738587.7A
Other languages
German (de)
French (fr)
Other versions
EP3568913A1 (en
Inventor
Jørgen BØJER
Peter Dam MADSEN
Arthur S. Morris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wispry Inc
Original Assignee
Wispry Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US15/402,982 external-priority patent/US10320357B2/en
Application filed by Wispry Inc filed Critical Wispry Inc
Publication of EP3568913A1 publication Critical patent/EP3568913A1/en
Publication of EP3568913A4 publication Critical patent/EP3568913A4/en
Withdrawn legal-status Critical Current

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
    • 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
    • H03H7/175—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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series 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
    • H03H7/01—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
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H7/466—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source particularly adapted as input circuit for receivers
    • 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
    • H03H2210/00—Indexing scheme relating to details of tunable filters
    • H03H2210/01—Tuned parameter of filter characteristics
    • H03H2210/012—Centre frequency; Cut-off frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00—Indexing scheme relating to details of tunable filters
    • H03H2210/02—Variable filter component
    • H03H2210/025—Capacitor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2250/00—Indexing scheme relating to dual- or multi-band filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Filters And Equalizers (AREA)
EP18738587.7A 2017-01-10 2018-01-05 Tunable filter systems, devices, and methods Withdrawn EP3568913A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/402,982 US10320357B2 (en) 2013-03-15 2017-01-10 Electromagnetic tunable filter systems, devices, and methods in a wireless communication network for supporting multiple frequency bands
PCT/US2018/012546 WO2018132314A1 (en) 2017-01-10 2018-01-05 Tunable filter systems, devices, and methods

Publications (2)

Publication Number Publication Date
EP3568913A1 EP3568913A1 (en) 2019-11-20
EP3568913A4 true EP3568913A4 (en) 2020-09-02

Family

ID=62840242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18738587.7A Withdrawn EP3568913A4 (en) 2017-01-10 2018-01-05 Tunable filter systems, devices, and methods

Country Status (3)

Country Link
EP (1) EP3568913A4 (en)
CN (1) CN110495096A (en)
WO (1) WO2018132314A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10320357B2 (en) 2013-03-15 2019-06-11 Wispry, Inc. Electromagnetic tunable filter systems, devices, and methods in a wireless communication network for supporting multiple frequency bands
EP3966940A1 (en) 2019-05-08 2022-03-16 Telefonaktiebolaget LM Ericsson (publ) Multi-band equalizers
CN112491367B (en) * 2020-12-10 2024-06-07 富满微电子集团股份有限公司 Low-noise amplifying circuit, control method thereof and electronic equipment
CN112564645B (en) * 2021-02-18 2021-05-28 广州慧智微电子有限公司 Multi-frequency low-noise amplifier
CN113037240B (en) * 2021-03-08 2022-06-24 电子科技大学 Wide adjustable range band elimination filter device with continuous frequency adjustable characteristic

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150131492A1 (en) * 2013-07-29 2015-05-14 Wispry, Inc. Adaptive filter response systems and methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI239116B (en) * 2004-09-01 2005-09-01 Ind Tech Res Inst Dual-band bandpass filter
US7262677B2 (en) * 2004-10-25 2007-08-28 Micro-Mobio, Inc. Frequency filtering circuit for wireless communication devices
CN102725959B (en) * 2010-01-28 2016-05-25 株式会社村田制作所 Tunable optic filter
FR2970129B1 (en) * 2010-12-30 2013-01-18 Thales Sa CAPACITOR VARIABLE FILTER SWITCHED USING MEMS COMPONENTS
CN105210291B (en) * 2013-03-15 2018-10-02 维斯普瑞公司 Tunable filter system, device and method
US9786973B2 (en) * 2014-03-18 2017-10-10 Tdk Corporation Tunable filter using variable impedance transmission lines
JP6215072B2 (en) * 2014-01-31 2017-10-18 株式会社東芝 Tunable filter, phase variable device, and antenna device
CN112290959B (en) * 2015-06-05 2022-05-24 维斯普瑞公司 Adaptive multi-carrier filter response system and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150131492A1 (en) * 2013-07-29 2015-05-14 Wispry, Inc. Adaptive filter response systems and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018132314A1 *

Also Published As

Publication number Publication date
CN110495096A (en) 2019-11-22
WO2018132314A1 (en) 2018-07-19
EP3568913A1 (en) 2019-11-20

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