EE03941B1 - Seade ja meetodid ribapääsfiltrite häälestamiseks - Google Patents
Seade ja meetodid ribapääsfiltrite häälestamiseksInfo
- Publication number
- EE03941B1 EE03941B1 EEP200000449A EEP200000449A EE03941B1 EE 03941 B1 EE03941 B1 EE 03941B1 EE P200000449 A EEP200000449 A EE P200000449A EE P200000449 A EEP200000449 A EE P200000449A EE 03941 B1 EE03941 B1 EE 03941B1
- Authority
- EE
- Estonia
- Prior art keywords
- methods
- bandpass filters
- tuning bandpass
- tuning
- filters
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/12—Electrically-operated arrangements for indicating correct tuning
-
- 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
- H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC 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
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
- H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/018,513 US6266522B1 (en) | 1998-02-04 | 1998-02-04 | Apparatus and methods for tuning bandpass filters |
PCT/US1999/002424 WO1999040679A1 (en) | 1998-02-04 | 1999-02-04 | Apparatus and methods for tuning bandpass filters |
Publications (2)
Publication Number | Publication Date |
---|---|
EE200000449A EE200000449A (et) | 2001-12-17 |
EE03941B1 true EE03941B1 (et) | 2002-12-16 |
Family
ID=21788315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EEP200000449A EE03941B1 (et) | 1998-02-04 | 1999-02-04 | Seade ja meetodid ribapääsfiltrite häälestamiseks |
Country Status (11)
Country | Link |
---|---|
US (2) | US6266522B1 (et) |
EP (1) | EP1053595B1 (et) |
JP (1) | JP2002503050A (et) |
KR (1) | KR100621704B1 (et) |
CN (1) | CN1110136C (et) |
AU (1) | AU748203B2 (et) |
BR (1) | BR9910890A (et) |
EE (1) | EE03941B1 (et) |
HK (1) | HK1036368A1 (et) |
MY (1) | MY121351A (et) |
WO (1) | WO1999040679A1 (et) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10052719B4 (de) * | 2000-10-24 | 2004-08-26 | Siemens Ag | Filter für elektromagnetisch übertragene Signale |
FI109624B (fi) * | 2000-12-04 | 2002-09-13 | Nokia Corp | Menetelmä suodattimen virittämiseksi |
US6763230B2 (en) * | 2001-02-20 | 2004-07-13 | Industrial Technology Research Institute | Frequency-lock filtering receiver |
US6978125B2 (en) * | 2001-07-05 | 2005-12-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for tuning pre-selection filters in radio receivers |
WO2002084870A2 (en) * | 2001-04-17 | 2002-10-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for tuning rf-filters in radio receivers |
CA2357491A1 (en) * | 2001-09-17 | 2003-03-17 | Ralph Mason | Filter tuning using direct digital sub-sampling |
JP3906792B2 (ja) * | 2002-01-22 | 2007-04-18 | 松下電器産業株式会社 | 高周波信号受信装置とその製造方法 |
US7221917B2 (en) * | 2002-05-01 | 2007-05-22 | Ibiquity Digital Corporation | Adjacent channel interference mitigation for FM digital audio broadcasting receivers |
US6718167B2 (en) * | 2002-08-01 | 2004-04-06 | Agere Systems Inc. | Filter center frequency temperature compensation by adjustment of the operating frequency of the host system |
US7039385B1 (en) * | 2003-06-02 | 2006-05-02 | Rockwell Collins, Inc. | Method and apparatus for automatic center frequency tuning of tunable bandpass filters |
US7603098B2 (en) | 2004-03-31 | 2009-10-13 | Broadcom Corporation | Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection |
US7596195B2 (en) * | 2004-03-31 | 2009-09-29 | Broadcom Corporation | Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture |
US7433668B2 (en) * | 2004-12-23 | 2008-10-07 | Lucent Technologies Inc. | Controlling Q-factor of filters |
US8831552B1 (en) * | 2005-06-15 | 2014-09-09 | Marvell International Ltd. | RF band pass filter with feedback control |
JPWO2007004465A1 (ja) | 2005-07-04 | 2009-01-22 | パナソニック株式会社 | 半導体装置およびそれを用いた無線回路装置 |
US7539476B2 (en) * | 2006-03-13 | 2009-05-26 | Kleer Semiconductor Corporation | RF-to-baseband receiver architecture |
EP2311188B1 (en) | 2008-06-19 | 2016-03-30 | Qualcomm Incorporated | Apparatus and method for tuning a gm-c filter |
US8494470B2 (en) | 2008-11-25 | 2013-07-23 | Silicon Laboratories Inc. | Integrated receivers and integrated circuit having integrated inductors |
US8145170B2 (en) * | 2008-11-25 | 2012-03-27 | Silicon Laboratories Inc. | Low-cost receiver using tracking bandpass filter and lowpass filter |
US8145172B2 (en) * | 2008-11-25 | 2012-03-27 | Silicon Laboratories Inc. | Low-cost receiver using tracking filter |
US8725103B2 (en) | 2012-01-03 | 2014-05-13 | Silicon Laboratories Inc. | Receiver including a tracking filter |
US8983417B2 (en) | 2012-01-03 | 2015-03-17 | Silicon Laboratories Inc. | Low-cost receiver using integrated inductors |
CN103956989B (zh) * | 2014-05-23 | 2018-01-26 | 武汉大学 | 一种多模多频可重构Gm‑C复数滤波器 |
US9548721B1 (en) * | 2015-11-24 | 2017-01-17 | King Fahd University Of Petroleum And Minerals | Floating immittance emulator |
CN107733390A (zh) * | 2017-10-19 | 2018-02-23 | 成都旭思特科技有限公司 | 精确调谐的滤波器调谐方法 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3792357A (en) * | 1972-05-24 | 1974-02-12 | N Hekimian | Pre-emphasis loop filter for improved fm demodulator noise threshold performance |
US3953849A (en) * | 1974-08-06 | 1976-04-27 | Texas Instruments Incorporated | Automatically centered pulsed radar receiver |
US4232398A (en) | 1978-02-09 | 1980-11-04 | Motorola, Inc. | Radio receiver alignment indicator |
US4316108A (en) * | 1979-09-25 | 1982-02-16 | Rogers Jr Walter M | Tracking filter for FM threshold extension |
EP0086838B1 (en) * | 1981-08-31 | 1986-11-20 | Oki Electric Industry Company, Limited | High-sensitivity fm signal demodulation system |
US4621645A (en) * | 1984-09-14 | 1986-11-11 | General Electric Company | Method of estimating tissue attenuation using wideband ultrasonic pulse and apparatus for use therein |
US4679247A (en) * | 1985-03-27 | 1987-07-07 | Cincinnati Microwave, Inc. | FM receiver |
US4731872A (en) * | 1985-03-27 | 1988-03-15 | Cincinnati Microwave, Inc. | FM TVRO receiver with improved oscillating limiter |
US4695792A (en) * | 1985-12-16 | 1987-09-22 | Ecole Polytechnique | Method and system for measuring the amplitude and phase angle of harmonics in a periodic signal |
WO1990015339A1 (en) | 1989-05-31 | 1990-12-13 | Institut Tekhnicheskoi Kibernetiki Akademii Nauk Belorusskoi Ssr | Method and device for analysis of random signals |
JPH04211508A (ja) * | 1990-06-15 | 1992-08-03 | Toshiba Corp | 積分回路 |
JP2825389B2 (ja) * | 1991-11-22 | 1998-11-18 | 株式会社東芝 | Fm受信機 |
TW263640B (et) | 1992-06-26 | 1995-11-21 | Philips Electronics Nv | |
EP0579875B1 (en) | 1992-07-24 | 1997-09-10 | Alcatel | Quality factor tuning system |
ES2123538T3 (es) | 1992-07-24 | 1999-01-16 | Alsthom Cge Alcatel | Sistema de sintonizacion de frecuencia para un par ota-c. |
US5408196A (en) * | 1993-03-29 | 1995-04-18 | U.S. Philips Corporation | Tunable device |
EP0674412B1 (en) * | 1994-03-25 | 2004-07-14 | Samsung Electronics Co., Ltd. | Method and apparatus for automatic frequency control |
EP0726652B1 (en) | 1995-02-10 | 2001-10-17 | Alcatel | Linear tunable Gm-C integrator |
DE19540139C2 (de) | 1995-10-27 | 1999-06-02 | Endress Hauser Gmbh Co | Verfahren zur Einstellung der Mittenfrequenz eines Bandfilters |
US5666083A (en) | 1995-11-17 | 1997-09-09 | Harris Corporation | Discrete programming methodology and circuit for an active transconductance-C filter |
US5949832A (en) * | 1996-03-26 | 1999-09-07 | Sicom, Inc. | Digital receiver with tunable analog filter and method therefor |
US5945889A (en) * | 1997-08-13 | 1999-08-31 | Texas Instruments Incorporated | Method and apparatus for tuning high Q bandpass filters using pulse excitation |
US5926752A (en) * | 1998-01-15 | 1999-07-20 | Trw Inc. | Apparatus and method for remote convenience message transmission and control with a tunable filter receiver |
-
1998
- 1998-02-04 US US09/018,513 patent/US6266522B1/en not_active Expired - Lifetime
- 1998-12-24 MY MYPI98005890A patent/MY121351A/en unknown
-
1999
- 1999-02-04 AU AU25832/99A patent/AU748203B2/en not_active Ceased
- 1999-02-04 BR BR9910890-9A patent/BR9910890A/pt not_active IP Right Cessation
- 1999-02-04 KR KR1020007008522A patent/KR100621704B1/ko not_active IP Right Cessation
- 1999-02-04 EP EP99905736A patent/EP1053595B1/en not_active Expired - Lifetime
- 1999-02-04 JP JP2000530979A patent/JP2002503050A/ja active Pending
- 1999-02-04 WO PCT/US1999/002424 patent/WO1999040679A1/en active IP Right Grant
- 1999-02-04 EE EEP200000449A patent/EE03941B1/et unknown
- 1999-02-04 CN CN99802647A patent/CN1110136C/zh not_active Expired - Lifetime
-
2000
- 2000-12-20 US US09/742,704 patent/US6631265B2/en not_active Expired - Lifetime
-
2001
- 2001-09-20 HK HK01106669A patent/HK1036368A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU748203B2 (en) | 2002-05-30 |
MY121351A (en) | 2006-01-28 |
EP1053595A1 (en) | 2000-11-22 |
US20010001759A1 (en) | 2001-05-24 |
CN1289479A (zh) | 2001-03-28 |
KR100621704B1 (ko) | 2006-09-13 |
CN1110136C (zh) | 2003-05-28 |
JP2002503050A (ja) | 2002-01-29 |
BR9910890A (pt) | 2001-03-20 |
AU2583299A (en) | 1999-08-23 |
KR20010040650A (ko) | 2001-05-15 |
EP1053595B1 (en) | 2001-12-19 |
EE200000449A (et) | 2001-12-17 |
HK1036368A1 (en) | 2001-12-28 |
US6266522B1 (en) | 2001-07-24 |
WO1999040679A1 (en) | 1999-08-12 |
US6631265B2 (en) | 2003-10-07 |
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Legal Events
Date | Code | Title | Description |
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KB4A | Valid patent at the end of a year |
Effective date: 20021231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20031231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20041231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20051231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20061231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20071231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20081231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20091231 |
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KB4A | Valid patent at the end of a year |
Effective date: 20101231 |