DE69212044D1 - Zwischenfrequenzfilter - Google Patents

Zwischenfrequenzfilter

Info

Publication number
DE69212044D1
DE69212044D1 DE69212044T DE69212044T DE69212044D1 DE 69212044 D1 DE69212044 D1 DE 69212044D1 DE 69212044 T DE69212044 T DE 69212044T DE 69212044 T DE69212044 T DE 69212044T DE 69212044 D1 DE69212044 D1 DE 69212044D1
Authority
DE
Germany
Prior art keywords
intermediate frequency
frequency filter
filter
frequency
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 - Fee Related
Application number
DE69212044T
Other languages
English (en)
Other versions
DE69212044T2 (de
Inventor
Kanemi Sasaki
Mikio Takano
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.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
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 Kokusai Electric Corp filed Critical Kokusai Electric Corp
Application granted granted Critical
Publication of DE69212044D1 publication Critical patent/DE69212044D1/de
Publication of DE69212044T2 publication Critical patent/DE69212044T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
    • 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
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Networks Using Active Elements (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
DE69212044T 1991-04-17 1992-04-15 Zwischenfrequenzfilter Expired - Fee Related DE69212044T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3110858A JPH0817411B2 (ja) 1991-04-17 1991-04-17 中間周波フィルタ

Publications (2)

Publication Number Publication Date
DE69212044D1 true DE69212044D1 (de) 1996-08-14
DE69212044T2 DE69212044T2 (de) 1997-02-20

Family

ID=14546460

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69212044T Expired - Fee Related DE69212044T2 (de) 1991-04-17 1992-04-15 Zwischenfrequenzfilter

Country Status (4)

Country Link
US (1) US5245300A (de)
EP (1) EP0509495B1 (de)
JP (1) JPH0817411B2 (de)
DE (1) DE69212044T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3040035B2 (ja) * 1992-09-18 2000-05-08 ローム株式会社 中間周波増幅回路を備えた受信機
US5522289A (en) * 1994-11-08 1996-06-04 Snap-On Incorporated Opening spring for pivoting hand tool
DE69630827T2 (de) * 1995-01-19 2004-05-19 Matsushita Electric Industrial Co., Ltd., Kadoma Piezoelektrisches Filter, sein Herstellungsverfahren und Zwischenfrequenzfilter
DE19509644A1 (de) * 1995-03-17 1996-09-19 Thomson Brandt Gmbh Filterschaltung
US9363469B2 (en) 2008-07-17 2016-06-07 Ppc Broadband, Inc. Passive-active terminal adapter and method having automatic return loss control
US9647851B2 (en) * 2008-10-13 2017-05-09 Ppc Broadband, Inc. Ingress noise inhibiting network interface device and method for cable television networks
US9351051B2 (en) 2008-10-13 2016-05-24 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US8356322B2 (en) 2009-09-21 2013-01-15 John Mezzalingua Associates, Inc. Passive multi-port entry adapter and method for preserving downstream CATV signal strength within in-home network
US10154302B2 (en) 2008-10-13 2018-12-11 Ppc Broadband, Inc. CATV entry adapter and method for distributing CATV and in-home entertainment signals
US8510782B2 (en) * 2008-10-21 2013-08-13 Ppc Broadband, Inc. CATV entry adapter and method for preventing interference with eMTA equipment from MoCA Signals
US11910052B2 (en) 2008-10-21 2024-02-20 Ppc Broadband, Inc. Entry device for communicating external network signals and in-home network signals
US8487717B2 (en) 2010-02-01 2013-07-16 Ppc Broadband, Inc. Multipath mitigation circuit for home network
US8479247B2 (en) 2010-04-14 2013-07-02 Ppc Broadband, Inc. Upstream bandwidth conditioning device
US8561125B2 (en) 2010-08-30 2013-10-15 Ppc Broadband, Inc. Home network frequency conditioning device and method
CA2831220C (en) 2010-12-21 2022-05-31 Ppc Broadband, Inc. Method and apparatus for reducing isolation in a home network
US20120331501A1 (en) * 2011-06-23 2012-12-27 John Mezzalingua Associates, Inc. Low-pass filter circuit
WO2018005951A1 (en) 2016-06-30 2018-01-04 Ppc Broadband, Inc. Passive enhanced moca entry device
CA3088988A1 (en) 2018-01-19 2019-07-25 Ppc Broadband, Inc. Systems and methods for extending an in-home splitter network

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2929031A (en) * 1957-02-06 1960-03-15 Hermes Electronics Co Intermediate band width crystal filter
US3359512A (en) * 1963-12-06 1967-12-19 Motorola Inc Band pass crystal filter circuit with sharp cutoff
US4048595A (en) * 1976-01-22 1977-09-13 Westinghouse Electric Corporation Information extraction for doppler radar
US4060776A (en) * 1976-05-17 1977-11-29 Westinghouse Electric Corporation Intermediate-band crystal filter with low-transient response
JPS533711A (en) * 1976-06-30 1978-01-13 Nec Corp Signal receiving circuit for frequency system

Also Published As

Publication number Publication date
US5245300A (en) 1993-09-14
EP0509495A3 (en) 1992-11-04
DE69212044T2 (de) 1997-02-20
EP0509495B1 (de) 1996-07-10
JPH0817411B2 (ja) 1996-02-21
JPH04317232A (ja) 1992-11-09
EP0509495A2 (de) 1992-10-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee