GR20050100595A - Double crystal with high frequencies of fundamental oscillation frequency. - Google Patents

Double crystal with high frequencies of fundamental oscillation frequency.

Info

Publication number
GR20050100595A
GR20050100595A GR20050100595A GR20050100595A GR20050100595A GR 20050100595 A GR20050100595 A GR 20050100595A GR 20050100595 A GR20050100595 A GR 20050100595A GR 20050100595 A GR20050100595 A GR 20050100595A GR 20050100595 A GR20050100595 A GR 20050100595A
Authority
GR
Greece
Prior art keywords
oscillation frequency
high frequencies
fundamental oscillation
double crystal
crystal
Prior art date
Application number
GR20050100595A
Other languages
Greek (el)
Other versions
GR1006590B (en
Inventor
Δημητριος Αφενδρας
Νικολαος Σταθοπουλος
Original Assignee
Νικολαος Σταθοπουλος
Opt Hellas Aebe
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 Νικολαος Σταθοπουλος, Opt Hellas Aebe filed Critical Νικολαος Σταθοπουλος
Priority to GR20050100595A priority Critical patent/GR1006590B/en
Publication of GR20050100595A publication Critical patent/GR20050100595A/en
Publication of GR1006590B publication Critical patent/GR1006590B/en

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
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects
    • H03H9/02118—Means for compensation or elimination of undesirable effects of lateral leakage between adjacent resonators
    • 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
    • H03H9/56—Monolithic crystal filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

Double crystal with high frequencies of fundamental oscillation frequency (above 50 MHz) which consists of a piezoelectric crystal plate provided by the inverted mesa technique and manufactured by liquid etching so that two active regions for metal deposition are created without coupling between them. The two oscillation elements obtained are independent and can be adjusted at different frequencies. Its application in topologies of crystal filters of small or large band-pass width reduces the number of components and consequently reduces their cost.
GR20050100595A 2005-10-06 2005-10-06 Double crystal with high frequencies of fundamental oscillation frequency. GR1006590B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR20050100595A GR1006590B (en) 2005-10-06 2005-10-06 Double crystal with high frequencies of fundamental oscillation frequency.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20050100595A GR1006590B (en) 2005-10-06 2005-10-06 Double crystal with high frequencies of fundamental oscillation frequency.

Publications (2)

Publication Number Publication Date
GR20050100595A true GR20050100595A (en) 2007-05-23
GR1006590B GR1006590B (en) 2009-11-11

Family

ID=38038455

Family Applications (1)

Application Number Title Priority Date Filing Date
GR20050100595A GR1006590B (en) 2005-10-06 2005-10-06 Double crystal with high frequencies of fundamental oscillation frequency.

Country Status (1)

Country Link
GR (1) GR1006590B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55128913A (en) * 1979-03-28 1980-10-06 Nippon Dempa Kogyo Co Ltd Piezoelectric band pass filter
JPS6027218A (en) * 1983-07-22 1985-02-12 Toyo Commun Equip Co Ltd Composite type piezo-electric band pass filter
JPS6113809A (en) * 1984-06-29 1986-01-22 Nippon Dempa Kogyo Co Ltd Twin type piezoelectric vibrator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55128913A (en) * 1979-03-28 1980-10-06 Nippon Dempa Kogyo Co Ltd Piezoelectric band pass filter
JPS6027218A (en) * 1983-07-22 1985-02-12 Toyo Commun Equip Co Ltd Composite type piezo-electric band pass filter
JPS6113809A (en) * 1984-06-29 1986-01-22 Nippon Dempa Kogyo Co Ltd Twin type piezoelectric vibrator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KINSMAN R G: "A history of crystal filters", FREQUENCY CONTROL SYMPOSIUM, 1998. PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL PASADENA, CA, USA 27-29 MAY 1998, NEW YORK, NY, USA,IEEE, US, 27 May 1998 (1998-05-27), pages 563 - 570, XP010305656, ISBN: 0-7803-4373-5 *
NAGAURA Z-I ET AL: "Changing process of two convex-lens shape resonators on one quartz blank", FREQUENCY CONTROL SYMPOSIUM AND EXPOSITION, 2005. PROCEEDINGS OF THE 2005 IEEE INTERNATIONAL VANCOUVER, BC, CANADA AUG. 29-31, 2005, PISCATAWAY, NJ, USA,IEEE, 29 August 2005 (2005-08-29), pages 588 - 593, XP010877237, ISBN: 0-7803-9053-9 *

Also Published As

Publication number Publication date
GR1006590B (en) 2009-11-11

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Legal Events

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PG Patent granted
ML Lapse due to non-payment of fees

Effective date: 20130508