GB2433367B - Filter using tuning fork crystals - Google Patents

Filter using tuning fork crystals

Info

Publication number
GB2433367B
GB2433367B GB0524758A GB0524758A GB2433367B GB 2433367 B GB2433367 B GB 2433367B GB 0524758 A GB0524758 A GB 0524758A GB 0524758 A GB0524758 A GB 0524758A GB 2433367 B GB2433367 B GB 2433367B
Authority
GB
United Kingdom
Prior art keywords
filter
tuning fork
crystals
fork crystals
tuning
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.)
Active
Application number
GB0524758A
Other versions
GB0524758D0 (en
GB2433367A (en
Inventor
Peter John Jones
Philip Elphee Williams
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0524758A priority Critical patent/GB2433367B/en
Publication of GB0524758D0 publication Critical patent/GB0524758D0/en
Publication of GB2433367A publication Critical patent/GB2433367A/en
Application granted granted Critical
Publication of GB2433367B publication Critical patent/GB2433367B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/542—Systems for transmission via power distribution lines the information being in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB0524758A 2005-12-03 2005-12-03 Filter using tuning fork crystals Active GB2433367B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0524758A GB2433367B (en) 2005-12-03 2005-12-03 Filter using tuning fork crystals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0524758A GB2433367B (en) 2005-12-03 2005-12-03 Filter using tuning fork crystals

Publications (3)

Publication Number Publication Date
GB0524758D0 GB0524758D0 (en) 2006-01-11
GB2433367A GB2433367A (en) 2007-06-20
GB2433367B true GB2433367B (en) 2010-11-10

Family

ID=35686076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0524758A Active GB2433367B (en) 2005-12-03 2005-12-03 Filter using tuning fork crystals

Country Status (1)

Country Link
GB (1) GB2433367B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041828A1 (en) 2011-09-22 2013-03-28 Xtra-Sense Limited Filter circuit with neutralised stray capacitance of a piezo - crystal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005083A (en) * 1927-07-07 1935-06-18 Rca Corp Filter
US2205847A (en) * 1938-02-24 1940-06-25 Rca Corp Crystal filter
US3221265A (en) * 1961-08-29 1965-11-30 Secr Aviation Crystal filter circuits
GB1042792A (en) * 1963-03-25 1966-09-14 Electrometre Transmitting information over power supply lines
JPS51138363A (en) * 1975-05-26 1976-11-29 Noto Denshi Kogyo Kk Band-pass filter using a piezoelectric tunig furk
CH617297A5 (en) * 1977-09-30 1980-05-14 Straumann Inst Ag Electromechanical oscillator, particularly for a band-pass filter of a remote control device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005083A (en) * 1927-07-07 1935-06-18 Rca Corp Filter
US2205847A (en) * 1938-02-24 1940-06-25 Rca Corp Crystal filter
US3221265A (en) * 1961-08-29 1965-11-30 Secr Aviation Crystal filter circuits
GB1042792A (en) * 1963-03-25 1966-09-14 Electrometre Transmitting information over power supply lines
JPS51138363A (en) * 1975-05-26 1976-11-29 Noto Denshi Kogyo Kk Band-pass filter using a piezoelectric tunig furk
CH617297A5 (en) * 1977-09-30 1980-05-14 Straumann Inst Ag Electromechanical oscillator, particularly for a band-pass filter of a remote control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013041828A1 (en) 2011-09-22 2013-03-28 Xtra-Sense Limited Filter circuit with neutralised stray capacitance of a piezo - crystal

Also Published As

Publication number Publication date
GB0524758D0 (en) 2006-01-11
GB2433367A (en) 2007-06-20

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