CN108536325B - 具有并行模数转换器通道的系统中的抽取滤波 - Google Patents

具有并行模数转换器通道的系统中的抽取滤波 Download PDF

Info

Publication number
CN108536325B
CN108536325B CN201810161623.5A CN201810161623A CN108536325B CN 108536325 B CN108536325 B CN 108536325B CN 201810161623 A CN201810161623 A CN 201810161623A CN 108536325 B CN108536325 B CN 108536325B
Authority
CN
China
Prior art keywords
output
input
coefficient
sequence
circuit
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.)
Active
Application number
CN201810161623.5A
Other languages
English (en)
Chinese (zh)
Other versions
CN108536325A (zh
Inventor
P.单
D.索贝尔
S.L.莫林
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.)
Synaptics Inc
Original Assignee
Synaptics 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
Application filed by Synaptics Inc filed Critical Synaptics Inc
Publication of CN108536325A publication Critical patent/CN108536325A/zh
Application granted granted Critical
Publication of CN108536325B publication Critical patent/CN108536325B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0664—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
    • H04B1/0042—Digital filtering
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0671—Cascaded integrator-comb [CIC] filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/1205—Multiplexed conversion systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
    • H03M1/1245—Details of sampling arrangements or methods
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • H04B1/0017—Digital filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H2017/0072—Theoretical filter design
    • H03H2017/0081—Theoretical filter design of FIR filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
CN201810161623.5A 2017-03-03 2018-02-26 具有并行模数转换器通道的系统中的抽取滤波 Active CN108536325B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/449,878 US9900028B1 (en) 2017-03-03 2017-03-03 Decimation filtering in systems having parallel analog-to-digital converter channels
US15/449878 2017-03-03

Publications (2)

Publication Number Publication Date
CN108536325A CN108536325A (zh) 2018-09-14
CN108536325B true CN108536325B (zh) 2024-04-09

Family

ID=61189130

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810161623.5A Active CN108536325B (zh) 2017-03-03 2018-02-26 具有并行模数转换器通道的系统中的抽取滤波

Country Status (4)

Country Link
US (1) US9900028B1 (enExample)
JP (1) JP7011950B2 (enExample)
KR (1) KR102367762B1 (enExample)
CN (1) CN108536325B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620565A (zh) * 2019-08-09 2019-12-27 西人马帝言(北京)科技有限公司 一种数字抽取滤波器
US12487706B1 (en) 2024-12-05 2025-12-02 Stmicroelectronics International N.V. ADC data processing circuit for touch controllers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079734A (en) * 1990-04-30 1992-01-07 Harris Corporation Digital decimation filter
CN1223754A (zh) * 1996-06-27 1999-07-21 交互数字技术公司 码分多址调制解调器的高效多信道滤波
CN1494335A (zh) * 2002-10-30 2004-05-05 Lg电子株式会社 移动通信系统的数字滤波器及其操作方法
CN1945979A (zh) * 2005-07-20 2007-04-11 M/A-Com公司 使用数字元件仿真滤波器的方法和装置
CN104007874A (zh) * 2013-02-25 2014-08-27 三星电子株式会社 数字滤波器、触摸感测设备、和用于执行数字滤波的方法
CN105915241A (zh) * 2016-04-13 2016-08-31 信阳师范学院 Fpga中实现超高速数字正交下变频及抽取滤波的方法与系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02172629A (ja) * 1988-12-26 1990-07-04 Mitsubishi Electric Corp 加工装置
US5257026A (en) * 1992-04-17 1993-10-26 Crystal Semiconductor, Inc. Method and apparatus for calibrating a multi-bit delta-sigma modular
US5345409A (en) * 1993-03-25 1994-09-06 General Electric Company Programmable digital signal processor system for processing electrical power signals
US6014682A (en) 1997-05-30 2000-01-11 International Business Machines Corporation Methods and apparatus for variable-rate down-sampling filters for discrete-time sampled systems using a fixed sampling rate
DE102004062291B4 (de) 2004-12-23 2010-04-08 Austriamicrosystems Ag FIR-Dezimationsfilter und Anordnung mit demselben
US20080013747A1 (en) * 2006-06-30 2008-01-17 Bao Tran Digital stethoscope and monitoring instrument
WO2011149974A1 (en) * 2010-05-24 2011-12-01 The Board Of Trustees Of The University Of Illinois High sensitivity environmental senor board and methods for structural health monitoring
US9176633B2 (en) * 2014-03-31 2015-11-03 Synaptics Incorporated Sensor device and method for estimating noise in a capacitive sensing device
US10296108B2 (en) * 2015-07-06 2019-05-21 Sigmasense, Llc. Pen system with internal pressure tilt rotation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079734A (en) * 1990-04-30 1992-01-07 Harris Corporation Digital decimation filter
CN1223754A (zh) * 1996-06-27 1999-07-21 交互数字技术公司 码分多址调制解调器的高效多信道滤波
CN1494335A (zh) * 2002-10-30 2004-05-05 Lg电子株式会社 移动通信系统的数字滤波器及其操作方法
CN1945979A (zh) * 2005-07-20 2007-04-11 M/A-Com公司 使用数字元件仿真滤波器的方法和装置
CN104007874A (zh) * 2013-02-25 2014-08-27 三星电子株式会社 数字滤波器、触摸感测设备、和用于执行数字滤波的方法
CN105915241A (zh) * 2016-04-13 2016-08-31 信阳师范学院 Fpga中实现超高速数字正交下变频及抽取滤波的方法与系统

Also Published As

Publication number Publication date
KR102367762B1 (ko) 2022-02-24
US9900028B1 (en) 2018-02-20
JP7011950B2 (ja) 2022-01-27
JP2018152847A (ja) 2018-09-27
CN108536325A (zh) 2018-09-14
KR20180101189A (ko) 2018-09-12

Similar Documents

Publication Publication Date Title
JP7118902B2 (ja) デルタシグマ変調器を備えた入力装置レシーバ
US9703436B2 (en) Hybrid large dynamic range capacitance sensing
US10816582B2 (en) Sigma-delta configurations for capacitance sensing
US9921668B1 (en) Touch panel controller integrated with host processor for dynamic baseline image update
US9606670B2 (en) Real-time spectral noise monitoring for proximity sensing device
JP7146414B2 (ja) デジタルフィルタのための係数発生
US9176633B2 (en) Sensor device and method for estimating noise in a capacitive sensing device
US9817502B2 (en) Switched-capacitor harmonic-reject mixer
US9645670B2 (en) Sensing frame averaging for cancelling display noise in simultaneous display and touch sensing
CN108536325B (zh) 具有并行模数转换器通道的系统中的抽取滤波
JP2019515372A (ja) タッチ力推定のためのトランス容量データと絶対容量データとの組み合わせ
US10126867B2 (en) Matched filter for a first order sigma delta capacitance measurement system and a method to determine the same
US20230089160A1 (en) Touch-to-display noise mitigation for touchscreen devices
US10175824B2 (en) Interference mitigation and clock dithering for a continuous-time receiver for capacitive sensing
US9436337B2 (en) Switched capacitance techniques for input sensing
US10055045B2 (en) Current feedback digital charge accumulator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant