ES8202461A1 - Un dispositivo de filtro de ondas electricas. - Google Patents
Un dispositivo de filtro de ondas electricas.Info
- Publication number
- ES8202461A1 ES8202461A1 ES499244A ES499244A ES8202461A1 ES 8202461 A1 ES8202461 A1 ES 8202461A1 ES 499244 A ES499244 A ES 499244A ES 499244 A ES499244 A ES 499244A ES 8202461 A1 ES8202461 A1 ES 8202461A1
- Authority
- ES
- Spain
- Prior art keywords
- frequency
- notch filter
- tuning
- adjustable
- methods
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/004—Circuit elements of oscillators including a variable capacitance, e.g. a varicap, a varactor or a variable capacitance of a diode or transistor
Landscapes
- Networks Using Active Elements (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
DISPOSITIVO DE FILTRO DE ONDAS ELECTRICAS. DISPONE DE UNA CARACTERISTICA DE TRANSFERENCIA DE BANDA ESTRECHA CENTRADA SOBRE UNA FRECUENCIA QUE PUEDE VARIARSE EN TODO UN MARGEN DE FUNCIONAMIENTO PARA LA TRANSMISION DIRECTA DE SEÑALES. CONSTA, DICHO DISPOSITIVO, DE UN CIRCUITO ACTIVO AUSILIAR QUE INCLUYE UN ACOPLAMIENTO POR TRANSFORMADOR (24); SE CONECTA UN FILTRO, FORMADO POR DOS CONDENSADORES QUE CONTIENEN DIODOS (6 6A), EN EL CIRCUITO ACTIVO, A TRAVES DEL ACOPLAMIENTO, PARA JACER QUE DICHO CIRCUITO A DICHA FRECUENCIA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8004490A GB2071452B (en) | 1980-02-11 | 1980-02-11 | Adjustable and selective electrical filters and methods oftuning them |
Publications (2)
Publication Number | Publication Date |
---|---|
ES499244A0 ES499244A0 (es) | 1982-01-16 |
ES8202461A1 true ES8202461A1 (es) | 1982-01-16 |
Family
ID=10511257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES499244A Expired ES8202461A1 (es) | 1980-02-11 | 1981-02-09 | Un dispositivo de filtro de ondas electricas. |
Country Status (10)
Country | Link |
---|---|
US (1) | US4417220A (es) |
EP (1) | EP0034064B1 (es) |
JP (1) | JPS56129418A (es) |
CA (1) | CA1159915A (es) |
DE (1) | DE3164039D1 (es) |
ES (1) | ES8202461A1 (es) |
GB (1) | GB2071452B (es) |
GR (1) | GR73116B (es) |
MX (1) | MX149999A (es) |
NO (1) | NO153080C (es) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0752838B2 (ja) * | 1985-03-20 | 1995-06-05 | 株式会社日立製作所 | 集積回路 |
EP0736971A1 (fr) * | 1995-04-05 | 1996-10-09 | Philips Electronique Grand Public | Circuit réjecteur à fréquence de réjection réglable |
DE19540139C2 (de) * | 1995-10-27 | 1999-06-02 | Endress Hauser Gmbh Co | Verfahren zur Einstellung der Mittenfrequenz eines Bandfilters |
US5959512A (en) * | 1997-09-19 | 1999-09-28 | Raytheon Company | Electronically tuned voltage controlled evanescent mode waveguide filter |
FI107090B (fi) | 1999-04-19 | 2001-05-31 | Nokia Mobile Phones Ltd | Menetelmä ja järjestely resonaattorin virittämiseksi |
US6636128B2 (en) | 2001-06-07 | 2003-10-21 | The United States Of America As Represented By The Secretary Of The Navy | Frequency-tunable notch filter |
US6778023B2 (en) * | 2001-07-31 | 2004-08-17 | Nokia Corporation | Tunable filter and method of tuning a filter |
JP3925373B2 (ja) * | 2002-09-24 | 2007-06-06 | ミツミ電機株式会社 | 多値出力回路 |
US7688059B2 (en) * | 2004-12-13 | 2010-03-30 | Panasonic Corporation | Filter characteristic adjusting apparatus and filter characteristic adjusting method |
TW200703889A (en) * | 2005-07-15 | 2007-01-16 | Asustek Comp Inc | Compartmental gain limiter and controlling method thereof |
US7636559B2 (en) * | 2006-08-31 | 2009-12-22 | Microtune (Texas), L.P. | RF filter adjustment based on LC variation |
FR3013537A1 (fr) * | 2013-11-21 | 2015-05-22 | St Microelectronics Tours Sas | Commande de condensateur bst |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072868A (en) * | 1960-02-10 | 1963-01-08 | Int Research & Dev Co Ltd | Twin t filter |
GB1027621A (en) * | 1961-01-05 | 1966-04-27 | Wallace Davidson & Partners Lt | Improvements in and relating to electrical null networks |
US3193774A (en) * | 1961-12-21 | 1965-07-06 | Ibm | Frequency selective amplifier |
US3193777A (en) * | 1962-06-18 | 1965-07-06 | Collins Radio Co | Transistor amplifier-oscillator with a feedback switching circuit |
US3249876A (en) * | 1963-02-07 | 1966-05-03 | Gen Dynamics Corp | Precision tracking of electrically tuned circuits |
US3457526A (en) * | 1965-05-11 | 1969-07-22 | Bell Telephone Labor Inc | Notch filter |
US3535649A (en) * | 1968-07-15 | 1970-10-20 | Electrohome Ltd | Active filters |
US3562675A (en) * | 1969-05-16 | 1971-02-09 | Sperry Rand Corp | Automatic tuned interference signal rejection filter including drift compensation means |
GB1300392A (en) * | 1969-10-24 | 1972-12-20 | Marconi Instruments Ltd | Improvements in or relating to adjustable frequency generator equipments and adaptors therefor |
US3838351A (en) * | 1971-09-07 | 1974-09-24 | Hekimian Laboratories Inc | Active notch filter and dual mode filter/oscillator |
DE2854852C2 (de) * | 1978-12-19 | 1985-02-07 | Telefunken electronic GmbH, 7100 Heilbronn | Elektronische Abstimmeinheit, insbesondere für Fernseh-Empfangsgeräte |
-
1980
- 1980-02-11 GB GB8004490A patent/GB2071452B/en not_active Expired
-
1981
- 1981-02-06 US US06/232,180 patent/US4417220A/en not_active Expired - Fee Related
- 1981-02-09 ES ES499244A patent/ES8202461A1/es not_active Expired
- 1981-02-09 GR GR64087A patent/GR73116B/el unknown
- 1981-02-09 EP EP81300523A patent/EP0034064B1/en not_active Expired
- 1981-02-09 DE DE8181300523T patent/DE3164039D1/de not_active Expired
- 1981-02-10 JP JP1887181A patent/JPS56129418A/ja active Pending
- 1981-02-10 NO NO810451A patent/NO153080C/no unknown
- 1981-02-10 CA CA000370528A patent/CA1159915A/en not_active Expired
- 1981-02-11 MX MX185933A patent/MX149999A/es unknown
Also Published As
Publication number | Publication date |
---|---|
GR73116B (es) | 1984-02-03 |
EP0034064A3 (en) | 1981-12-30 |
DE3164039D1 (en) | 1984-07-19 |
NO153080C (no) | 1986-01-08 |
CA1159915A (en) | 1984-01-03 |
NO810451L (no) | 1981-08-12 |
MX149999A (es) | 1984-02-27 |
ES499244A0 (es) | 1982-01-16 |
GB2071452B (en) | 1984-04-04 |
US4417220A (en) | 1983-11-22 |
JPS56129418A (en) | 1981-10-09 |
NO153080B (no) | 1985-09-30 |
EP0034064B1 (en) | 1984-06-13 |
EP0034064A2 (en) | 1981-08-19 |
GB2071452A (en) | 1981-09-16 |
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