TW200723682A - Circuit for adjusting cutoff frequency of filter - Google Patents
Circuit for adjusting cutoff frequency of filterInfo
- Publication number
- TW200723682A TW200723682A TW095128711A TW95128711A TW200723682A TW 200723682 A TW200723682 A TW 200723682A TW 095128711 A TW095128711 A TW 095128711A TW 95128711 A TW95128711 A TW 95128711A TW 200723682 A TW200723682 A TW 200723682A
- Authority
- TW
- Taiwan
- Prior art keywords
- filter circuit
- cutoff frequency
- circuit
- filter
- switch
- Prior art date
Links
Classifications
-
- 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
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/02—Variable filter component
- H03H2210/021—Amplifier, e.g. transconductance amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/04—Filter calibration method
- H03H2210/043—Filter calibration method by measuring time constant
Landscapes
- Networks Using Active Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005362252 | 2005-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200723682A true TW200723682A (en) | 2007-06-16 |
Family
ID=38162678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW095128711A TW200723682A (en) | 2005-12-15 | 2006-08-04 | Circuit for adjusting cutoff frequency of filter |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090315619A1 (zh) |
JP (1) | JPWO2007069360A1 (zh) |
CN (1) | CN101326714A (zh) |
TW (1) | TW200723682A (zh) |
WO (1) | WO2007069360A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007325083A (ja) * | 2006-06-02 | 2007-12-13 | Neuro Solution Corp | アンテナ入力同調回路 |
US7937058B2 (en) * | 2006-10-18 | 2011-05-03 | Freescale Semiconductor, Inc. | Controlling the bandwidth of an analog filter |
CN101587141B (zh) * | 2008-05-21 | 2011-12-07 | 承永资讯科技股份有限公司 | 具有自动切换低通滤波器功能的测量装置 |
CN105814819B (zh) * | 2013-12-04 | 2019-06-28 | 马维尔国际贸易有限公司 | 用于校准模拟滤波器的方法和系统 |
US11025204B2 (en) * | 2017-11-02 | 2021-06-01 | Mediatek Inc. | Circuit having high-pass filter with variable corner frequency |
US11025228B1 (en) * | 2020-05-12 | 2021-06-01 | Honeywell International Inc. | Dynamic noise shaping filters and corresponding methods |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08191231A (ja) * | 1995-01-06 | 1996-07-23 | Sony Corp | フィルタ回路 |
JP2000059162A (ja) * | 1998-08-06 | 2000-02-25 | Fujitsu Ltd | フィルタ特性調整方法及び装置 |
JP2002076267A (ja) * | 2000-08-22 | 2002-03-15 | Hitachi Ltd | 無線送受信装置 |
JP2002118443A (ja) * | 2000-10-06 | 2002-04-19 | Niigata Seimitsu Kk | フィルタ回路 |
JP2002232251A (ja) * | 2001-02-01 | 2002-08-16 | Asahi Kasei Microsystems Kk | フィルタ中心周波数調整装置および方法 |
JP2003060485A (ja) * | 2001-08-14 | 2003-02-28 | Sony Corp | 能動フィルタ回路 |
JP2003347901A (ja) * | 2002-05-28 | 2003-12-05 | Hitachi Ltd | 周波数特性の自動調整機能を有するフィルタ回路 |
KR100464446B1 (ko) * | 2003-02-28 | 2005-01-03 | 삼성전자주식회사 | 임피던스 스케일링에 의한 주파수 응답 제어 장치 |
JP4443424B2 (ja) * | 2005-01-06 | 2010-03-31 | 富士通マイクロエレクトロニクス株式会社 | アナログフィルタ回路 |
-
2006
- 2006-07-12 CN CNA2006800464033A patent/CN101326714A/zh active Pending
- 2006-07-12 WO PCT/JP2006/314211 patent/WO2007069360A1/ja active Application Filing
- 2006-07-12 US US12/097,127 patent/US20090315619A1/en not_active Abandoned
- 2006-07-12 JP JP2007550075A patent/JPWO2007069360A1/ja active Pending
- 2006-08-04 TW TW095128711A patent/TW200723682A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
US20090315619A1 (en) | 2009-12-24 |
WO2007069360A1 (ja) | 2007-06-21 |
JPWO2007069360A1 (ja) | 2009-05-21 |
CN101326714A (zh) | 2008-12-17 |
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