SG10202004720SA - Variable filter - Google Patents

Variable filter

Info

Publication number
SG10202004720SA
SG10202004720SA SG10202004720SA SG10202004720SA SG10202004720SA SG 10202004720S A SG10202004720S A SG 10202004720SA SG 10202004720S A SG10202004720S A SG 10202004720SA SG 10202004720S A SG10202004720S A SG 10202004720SA SG 10202004720S A SG10202004720S A SG 10202004720SA
Authority
SG
Singapore
Prior art keywords
variable filter
variable
filter
Prior art date
Application number
SG10202004720SA
Inventor
Jorgen Staal Nielsen
Richard Nichols
Original Assignee
Anlotek Ltd
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
Application filed by Anlotek Ltd filed Critical Anlotek Ltd
Publication of SG10202004720SA publication Critical patent/SG10202004720SA/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00Networks using active elements
    • H03H11/02Multiple-port networks
    • H03H11/04Frequency selective two-port networks
    • H03H11/12Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1208Frequency selective two-port networks using amplifiers with feedback comprising an electromechanical resonator
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/3036Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00Networks using active elements
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00Networks using active elements
    • H03H11/02Multiple-port networks
    • H03H11/04Frequency selective two-port networks
    • H03H11/12Frequency selective two-port networks using amplifiers with feedback
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00Networks using active elements
    • H03H11/02Multiple-port networks
    • H03H11/04Frequency selective two-port networks
    • H03H11/12Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1291Current or voltage controlled filters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00Indexing scheme relating to details of tunable filters
    • H03H2210/01Tuned parameter of filter characteristics
    • H03H2210/012Centre frequency; Cut-off frequency
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00Indexing scheme relating to details of tunable filters
    • H03H2210/01Tuned parameter of filter characteristics
    • H03H2210/015Quality factor or bandwidth
SG10202004720SA 2015-11-23 2016-11-23 Variable filter SG10202004720SA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201562258867P 2015-11-23 2015-11-23

Publications (1)

Publication Number Publication Date
SG10202004720SA true SG10202004720SA (en) 2020-06-29

Family

ID=57442741

Family Applications (2)

Application Number Title Priority Date Filing Date
SG10202004720SA SG10202004720SA (en) 2015-11-23 2016-11-23 Variable filter
SG11201804302XA SG11201804302XA (en) 2015-11-23 2016-11-23 Variable filter

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG11201804302XA SG11201804302XA (en) 2015-11-23 2016-11-23 Variable filter

Country Status (10)

Country Link
US (2) US10050604B2 (en)
EP (2) EP3381126B1 (en)
JP (1) JP6770083B2 (en)
KR (1) KR20180087341A (en)
CN (1) CN109314505B (en)
IL (1) IL259540B2 (en)
MY (1) MY192162A (en)
RU (2) RU2738030C2 (en)
SG (2) SG10202004720SA (en)
WO (1) WO2017089803A1 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2738030C2 (en) 2015-11-23 2020-12-07 Анлотек Лимитед Tunable filter
US9900197B1 (en) * 2016-10-03 2018-02-20 Keyssa Systems, Inc. BPSK demodulation
TW202247602A (en) 2017-05-24 2022-12-01 英商安諾特克有限公司 Apparatus and method for controlling a resonator
US10498212B2 (en) * 2017-05-26 2019-12-03 Dialog Semiconductor (Uk) Limited Gate driver
US10355674B2 (en) * 2017-07-24 2019-07-16 Arm Limited Clock gating circuit
US10783223B2 (en) * 2017-10-12 2020-09-22 Pacesetter, Inc. Hybrid signal processing circuit for implantable medical devices and methods
US10164618B1 (en) * 2017-12-28 2018-12-25 Micron Technology, Inc. Jitter cancellation with automatic performance adjustment
GB201801241D0 (en) * 2018-01-25 2018-03-14 Eosemi Ltd Temperature compensated oscillator
CN109905095B (en) * 2019-03-28 2021-06-04 电子科技大学 Low-frequency-band narrow-band adjustable filter
CN110401431B (en) * 2019-07-18 2020-11-10 江苏康众数字医疗科技股份有限公司 Frequency following digital discrete filter, implementation method and application thereof
US11277110B2 (en) * 2019-09-03 2022-03-15 Anlotek Limited Fast frequency switching in a resonant high-Q analog filter
US11909400B2 (en) * 2019-12-05 2024-02-20 Anlotek Limited Use of stable tunable active feedback analog filters in frequency synthesis
EP3890189A1 (en) 2020-03-30 2021-10-06 Anlotek Limited Active feedback analog filters with coupled resonators
CN111585929B (en) * 2020-05-13 2020-12-15 安徽省安泰科技股份有限公司 5G mobile network monitoring system based on cloud computing
US11876499B2 (en) * 2020-06-15 2024-01-16 Anlotek Limited Tunable bandpass filter with high stability and orthogonal tuning
US11381230B2 (en) * 2020-09-04 2022-07-05 Northeastern University Microelectromechanical tunable delay line circuit
US20230361719A1 (en) * 2020-09-14 2023-11-09 Anlotek Limited Oscillator with a multiple pole resonator
RU2749605C1 (en) * 2020-12-08 2021-06-16 федеральное государственное бюджетное образовательное учреждение высшего образования «Донской государственный технический университет» (ДГТУ) Fourth-order broadband bandpass filter
RU2748610C1 (en) * 2020-12-08 2021-05-28 федеральное государственное бюджетное образовательное учреждение высшего образования «Донской государственный технический университет» (ДГТУ) Fourth-order broadband bandpass filter with single input and paraphase output
RU2760871C1 (en) * 2021-02-09 2021-12-01 федеральное государственное бюджетное образовательное учреждение высшего образования «Донской государственный технический университет» (ДГТУ) Fourth-order bandpass filter
RU2752254C1 (en) * 2021-02-09 2021-07-23 федеральное государственное бюджетное образовательное учреждение высшего образования «Донской государственный технический университет» (ДГТУ) Fourth order band filter
TWI740783B (en) * 2021-02-24 2021-09-21 中原大學 Design method for feedforward active noise control system using analog filter
TWI778525B (en) * 2021-02-24 2022-09-21 中原大學 Design method for feedforward active noise control system
US11955942B2 (en) 2021-02-27 2024-04-09 Anlotek Limited Active multi-pole filter
US20220376670A1 (en) 2021-04-30 2022-11-24 Anlotek Limited Phase noise reduction in a variable analogue rf resonator with switched capacitors
EP4089920A1 (en) 2021-05-12 2022-11-16 Anlotek Limited Fast frequency switching in a variable rf filter
US11817630B2 (en) 2021-09-17 2023-11-14 City University Of Hong Kong Substrate integrated waveguide-fed Fabry-Perot cavity filtering wideband millimeter wave antenna
WO2023056533A1 (en) * 2021-10-10 2023-04-13 Shaun Joseph Cunningham Device and method for deploying and controlling active taps
CN113890561B (en) * 2021-11-17 2023-07-21 歌尔科技有限公司 Electronic equipment and radio frequency circuit thereof
CN114265314B (en) * 2021-12-23 2022-06-24 哈尔滨工业大学 Robust inverse model learning gain design method based on FIR filtering
CN117176100B (en) * 2023-11-03 2024-02-23 苏州博海创业微系统有限公司 Band-pass filter circuit and filter for improving in-band flatness

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0151379B1 (en) 1989-04-21 1999-09-01 프레데릭 얀 스미스 Resonant amplifier, frequency synthesis circuit and super heterodine fm receiver
US5311198A (en) 1990-08-23 1994-05-10 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Active antenna
US5291159A (en) 1992-07-20 1994-03-01 Westinghouse Electric Corp. Acoustic resonator filter with electrically variable center frequency and bandwidth
US5491604A (en) 1992-12-11 1996-02-13 The Regents Of The University Of California Q-controlled microresonators and tunable electronic filters using such resonators
US5550520A (en) * 1995-04-11 1996-08-27 Trw Inc. Monolithic HBT active tuneable band-pass filter
US5854593A (en) 1996-07-26 1998-12-29 Prince Corporation Fast scan trainable transmitter
US5917387A (en) 1996-09-27 1999-06-29 Lucent Technologies Inc. Filter having tunable center frequency and/or tunable bandwidth
US6253092B1 (en) * 1997-11-25 2001-06-26 Uniden Financial, Inc. Closed loop transmitter with DAC sensitivity adjusted to detector nonlinearity
CA2224261A1 (en) 1997-12-09 1999-06-09 Philsar Electronics Inc. Low phase noise, high q, high gain amplifier in an integrated circuit
US6347237B1 (en) 1999-03-16 2002-02-12 Superconductor Technologies, Inc. High temperature superconductor tunable filter
US6356143B2 (en) 1999-11-01 2002-03-12 Intreon Corporation Method and apparatus for filtering radio frequency signals
WO2001089081A2 (en) 2000-05-16 2001-11-22 Chandler Stephen Anthony Gerar Radio frequency feedback amplifier circuits
US6452465B1 (en) 2000-06-27 2002-09-17 M-Squared Filters, Llc High quality-factor tunable resonator
US7174147B2 (en) 2001-04-11 2007-02-06 Kyocera Wireless Corp. Bandpass filter with tunable resonator
JP3880329B2 (en) 2001-04-20 2007-02-14 株式会社日立国際電気 Loop gain control method and power amplifier circuit
EP1251635A1 (en) 2001-04-20 2002-10-23 Semiconductor Ideas to The Market (ItoM) BV Tunable resonance amplifier
US6771147B2 (en) 2001-12-17 2004-08-03 Remec, Inc. 1-100 GHz microstrip filter
US6954774B1 (en) 2001-12-20 2005-10-11 Rockwell Collins Bandpass filter with ability to tune a pass frequency, passband gain and filter Q
DE10325396A1 (en) 2003-05-28 2004-12-23 Atmel Germany Gmbh Circuit arrangement for phase modulation for backscatter-based transponder has control unit that can selectively connect voltage sources to varactor connection(s) depending on desired phase angle
GB2403086B (en) 2003-06-17 2005-07-20 Motorola Inc Cartesian loop transmitter and method of adjusting an output level of such transmitter
FR2864727B1 (en) 2003-12-29 2007-05-11 St Microelectronics Sa ELECTRONIC CIRCUIT COMPRISING A RESONATOR INTENDED TO BE INTEGRATED IN A SEMICONDUCTOR PRODUCT
DE102004028068A1 (en) * 2004-06-09 2005-12-29 Epcos Ag oscillator
US7522016B2 (en) 2004-09-15 2009-04-21 Qualcomm, Incorporated Tunable surface acoustic wave resonators
US7433668B2 (en) 2004-12-23 2008-10-07 Lucent Technologies Inc. Controlling Q-factor of filters
DE602004023529D1 (en) * 2004-12-23 2009-11-19 Lucent Technologies Inc Control of the quality (Q) of filters
WO2006079078A2 (en) 2005-01-20 2006-07-27 Massachusetts Institute Of Technology Mode locking methods and apparatus
JP4922677B2 (en) 2005-07-01 2012-04-25 パナソニック株式会社 Wireless communication device
US7400203B2 (en) 2006-08-03 2008-07-15 Broadcom Corporation Circuit with Q-enhancement cell having feedback loop
KR100921383B1 (en) 2006-09-08 2009-10-14 가부시키가이샤 엔.티.티.도코모 Variable resonator, variable bandwidth filter, and electric circuit device
TWI326156B (en) * 2007-01-04 2010-06-11 Mstar Semiconductor Inc Method for tuning tunable filter
JP4724135B2 (en) 2007-02-22 2011-07-13 株式会社エヌ・ティ・ティ・ドコモ Variable resonator, variable filter, electric circuit device
RU2340079C1 (en) * 2007-02-26 2008-11-27 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Active band-pass piezoelectric filter
JP2008301182A (en) * 2007-05-31 2008-12-11 Fujitsu Microelectronics Ltd Filter circuit and semiconductor device
EP2168202B1 (en) 2007-06-27 2013-07-31 Superconductor Technologies, Inc. Low-loss tunable radio frequency filter
DE602008004142D1 (en) 2007-06-29 2011-02-03 Thomson Licensing IGITAL TELEVISION SIGNALS
GB2453099A (en) * 2007-07-19 2009-04-01 Univ Sussex Sensor system with tunable narrow band filter.
FR2920927B1 (en) 2007-09-11 2011-05-06 Commissariat Energie Atomique AUTOMATIC RADIOFREQUENCY CIRCUIT IMPEDANCE ADAPTATION METHOD AND AUTOMATICALLY ADAPTABLE TRANSMISSION OR RECEPTION SYSTEM
US7917117B2 (en) 2008-01-28 2011-03-29 University Of Washington Auto-tuning amplifier
US7884680B2 (en) 2008-06-30 2011-02-08 Infineon Technologies Ag Dynamically adjustable Q-factors
WO2010040119A1 (en) 2008-10-03 2010-04-08 Purdue Research Foundation Tunable evanescent-mode cavity filter
US7994870B2 (en) 2008-10-20 2011-08-09 Qualcomm, Incorporated Tunable filter with gain control circuit
FR2939581B1 (en) * 2008-12-09 2010-11-26 Commissariat Energie Atomique NETWORK OF COUPLED RESONATORS, PASS-BAND FILTER AND OSCILLATOR.
US8166084B2 (en) * 2009-03-27 2012-04-24 Intersil Americas Inc. Calibration of adjustable filters
US8362853B2 (en) 2009-06-19 2013-01-29 Qualcomm Incorporated Tunable MEMS resonators
US8538367B2 (en) * 2009-06-29 2013-09-17 Qualcomm Incorporated Buffer circuit with integrated loss canceling
CN102148609B (en) 2010-02-04 2014-12-17 赫梯特微波公司 Broadband analog band-pass filter
US20130065542A1 (en) 2010-02-16 2013-03-14 Cavitid, Inc., Spectral Filtering Systems
US8724731B2 (en) 2010-02-26 2014-05-13 Intersil Americas Inc. Methods and systems for noise and interference cancellation
GB2478585A (en) * 2010-03-11 2011-09-14 Stephen Anthony Gerard Chandler An RF amplifier linearised by RF feedback, and having a loop filter resonator of enhanced Q
US8427243B2 (en) * 2011-02-17 2013-04-23 Mediatek Inc. Signal generating circuit and signal generating method
CN102098018A (en) 2011-03-10 2011-06-15 江苏苏美达机电有限公司 Tunable bandpass filter system
US8767871B2 (en) 2011-06-08 2014-07-01 Broadcom Corporation Antenna tuning using the ratio of complex forward and reflected signals
US9407239B2 (en) 2011-07-06 2016-08-02 Hrl Laboratories, Llc Wide bandwidth automatic tuning circuit
GB2494652A (en) 2011-09-14 2013-03-20 Stephen Anthony Gerard Chandler A transmitter amplifier with linearising RF feedback and automatic control of resonator Q, resonator frequency, loop phase, and loop gain
US9236846B2 (en) 2011-12-06 2016-01-12 Futurewei Technologies, Inc. Tunable bandpass filter device and method
CN103248336B (en) * 2012-02-09 2016-04-06 联发科技股份有限公司 Filter
US8941441B2 (en) 2013-03-15 2015-01-27 Innophase Inc. LNA with linearized gain over extended dynamic range
US8766712B2 (en) 2012-05-04 2014-07-01 Analog Devices, Inc. Quality factor tuning for LC circuits
US9774311B2 (en) * 2013-03-15 2017-09-26 Qorvo Us, Inc. Filtering characteristic adjustments of weakly coupled tunable RF filters
CN203574616U (en) * 2013-11-22 2014-04-30 宁波杉工结构监测与控制工程中心有限公司 Multichannel low-pass filter with adjustable cut-off frequency and gain
WO2015176041A1 (en) 2014-05-15 2015-11-19 The Regents Of The University Of California Active resonator system with tunable quality factor, frequency, and impedance
US9813033B2 (en) 2014-09-05 2017-11-07 Innophase Inc. System and method for inductor isolation
US9735752B2 (en) 2014-12-03 2017-08-15 Tdk Corporation Apparatus and methods for tunable filters
CN104538714B (en) 2014-12-25 2017-04-26 深圳顺络电子股份有限公司 Band-pass filter with center frequency adjustable
RU2738030C2 (en) 2015-11-23 2020-12-07 Анлотек Лимитед Tunable filter

Also Published As

Publication number Publication date
RU2738030C2 (en) 2020-12-07
EP3381126B1 (en) 2023-07-05
MY192162A (en) 2022-08-03
EP3381126A1 (en) 2018-10-03
IL259540B1 (en) 2023-10-01
RU2018122759A (en) 2019-12-26
US10879875B2 (en) 2020-12-29
EP4243284A3 (en) 2023-10-11
JP2018536368A (en) 2018-12-06
RU2020121155A3 (en) 2020-10-14
US10050604B2 (en) 2018-08-14
RU2018122759A3 (en) 2020-04-28
CN109314505A (en) 2019-02-05
WO2017089803A1 (en) 2017-06-01
US20170149411A1 (en) 2017-05-25
US20180323770A1 (en) 2018-11-08
RU2020121155A (en) 2020-07-08
KR20180087341A (en) 2018-08-01
CN109314505B (en) 2022-08-05
SG11201804302XA (en) 2018-06-28
EP4243284A2 (en) 2023-09-13
JP6770083B2 (en) 2020-10-14
IL259540A (en) 2018-07-31
IL259540B2 (en) 2024-02-01

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