BR0317936A - Dispositivo de filtração altamente seletivo e método de filtração correspondente - Google Patents

Dispositivo de filtração altamente seletivo e método de filtração correspondente

Info

Publication number
BR0317936A
BR0317936A BR0317936-2A BR0317936A BR0317936A BR 0317936 A BR0317936 A BR 0317936A BR 0317936 A BR0317936 A BR 0317936A BR 0317936 A BR0317936 A BR 0317936A
Authority
BR
Brazil
Prior art keywords
highly selective
filtration
filtration device
filters
asymmetric
Prior art date
Application number
BR0317936-2A
Other languages
English (en)
Inventor
Jean-Yves Le Naour
Jean-Luc Robert
Olivier Mocquard
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0317936A publication Critical patent/BR0317936A/pt

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Superheterodyne Receivers (AREA)
  • Transceivers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Transmitters (AREA)

Abstract

"DISPOSITIVO DE FILTRAçãO ALTAMENTE SELETIVO E MéTODO DE FILTRAçãO CORRESPONDENTE". A invenção propõe um dispositivo de filtração 10 tendo uma resposta de freq³ência que é simétrica, usando filtros assimétricos 21 e 22 acoplados por dispositivos de transposição 23 e 24. As características vantajosas dos filtros assimétricos 21 e 22 são mantidas e as falhas associadas à assimetria são eliminadas. os filtros assimétricos 21 e 22 são, por exemplo, filtros de quartzo. A invenção também prop,3e uma unidade de transmissão e recepção externa 1, usando o dispositivo de filtração 10 com a aplicação do método de filtração.
BR0317936-2A 2003-01-06 2003-12-17 Dispositivo de filtração altamente seletivo e método de filtração correspondente BR0317936A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0300157A FR2849726B1 (fr) 2003-01-06 2003-01-06 Dispositif de filtrage tres selectif et procede de filtrage correspondant
PCT/EP2003/051032 WO2004062102A1 (en) 2003-01-06 2003-12-17 Highly selective filtering device and corresponding filtering method

Publications (1)

Publication Number Publication Date
BR0317936A true BR0317936A (pt) 2005-11-29

Family

ID=32524756

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0317936-2A BR0317936A (pt) 2003-01-06 2003-12-17 Dispositivo de filtração altamente seletivo e método de filtração correspondente

Country Status (11)

Country Link
US (1) US7436250B2 (pt)
EP (1) EP1581997B1 (pt)
JP (1) JP2006513605A (pt)
KR (1) KR20050089997A (pt)
CN (1) CN100527618C (pt)
AU (1) AU2003303509A1 (pt)
BR (1) BR0317936A (pt)
DE (1) DE60317933T2 (pt)
FR (1) FR2849726B1 (pt)
MX (1) MXPA05007286A (pt)
WO (1) WO2004062102A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4868463B2 (ja) * 2008-01-16 2012-02-01 独立行政法人情報通信研究機構 通信装置および通信方法
CN111313838A (zh) * 2020-03-04 2020-06-19 昆山立讯射频科技有限公司 非机械式可变带宽滤波系统及其控制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2337468A1 (fr) * 1975-12-29 1977-07-29 Trt Telecom Radio Electr Discriminateur de phase pour recepteur d'un systeme de transmission de donnees
JPS6031368B2 (ja) * 1978-08-23 1985-07-22 富士通株式会社 帯域炉波器
US4860321A (en) * 1985-09-13 1989-08-22 Hughes Aircraft Company Lock detector for feedback loops
US5097221A (en) * 1990-12-21 1992-03-17 The United States Of America As Represented By The Secretary Of The Navy Adaptive filter technique for suppression of wideband or offset narrowband radio frequency interference
US5303404A (en) * 1991-10-17 1994-04-12 Nokia Mobile Phones Ltd. Adjustable bandwidth in a radiotelephone
GB2282286B (en) * 1993-08-20 1997-12-17 Motorola Inc A radio device with spectral inversion
US5844939A (en) * 1997-02-14 1998-12-01 Hewlett-Packard Company Low-cost phaselocked local oscillator for millimeter wave transceivers
DE10026161A1 (de) * 2000-05-26 2001-11-29 Philips Corp Intellectual Pty Filteranordnung

Also Published As

Publication number Publication date
JP2006513605A (ja) 2006-04-20
EP1581997B1 (en) 2007-12-05
FR2849726A1 (fr) 2004-07-09
DE60317933D1 (de) 2008-01-17
US20060087368A1 (en) 2006-04-27
FR2849726B1 (fr) 2005-02-25
AU2003303509A1 (en) 2004-07-29
KR20050089997A (ko) 2005-09-09
EP1581997A1 (en) 2005-10-05
MXPA05007286A (es) 2005-09-08
US7436250B2 (en) 2008-10-14
DE60317933T2 (de) 2008-04-10
CN100527618C (zh) 2009-08-12
CN1736026A (zh) 2006-02-15
WO2004062102A1 (en) 2004-07-22

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Legal Events

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B08L Patent application lapsed because of non payment of annual fee [chapter 8.12 patent gazette]

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B08I Application fees: publication cancelled [chapter 8.9 patent gazette]

Free format text: ANULADA A PUBLICACAO CODIGO 8.12 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA.

B08F Application fees: application dismissed [chapter 8.6 patent gazette]

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B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2602 DE 17-11-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.