JPS55105426A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS55105426A
JPS55105426A JP1259679A JP1259679A JPS55105426A JP S55105426 A JPS55105426 A JP S55105426A JP 1259679 A JP1259679 A JP 1259679A JP 1259679 A JP1259679 A JP 1259679A JP S55105426 A JPS55105426 A JP S55105426A
Authority
JP
Japan
Prior art keywords
electrode
surface wave
crystal
axis
wave device
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.)
Granted
Application number
JP1259679A
Other languages
Japanese (ja)
Other versions
JPS6145892B2 (en
Inventor
Tsutomu Nishikawa
Atsushi Tani
Kenji Shirai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1259679A priority Critical patent/JPS55105426A/en
Publication of JPS55105426A publication Critical patent/JPS55105426A/en
Publication of JPS6145892B2 publication Critical patent/JPS6145892B2/ja
Granted 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02834—Means for compensation or elimination of undesirable effects of temperature influence
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/42—Time-delay networks using surface acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To enhance the frequency/temperature characteristics for the elastic surface wave device using the crystal, by selecting the crystal axis with the electrode film provided on the propagation line. CONSTITUTION:The electrode film thickness, the electrode finger width and the distance between electrode fingers of the transducer are referred to as h0, a and b respectively. And then the crystal plate is selected based on the relation between the equation using wavelength lambda and X=a.h0/(a+b).lambda and the cut-out angle theta of the crystal from the Z axis as theta=(-18707.5X<2>+21.429X+129.5) degrees. Thus no spurious is caused on such crystal plate to the surface wave of propagation of the X axis. Furthermore, the temperature property can also be increased by using the Au electrode. Also the electrode is provided on the propagation line of the surface wave, and thus the displacement can be concentrated onto the surface owing to the effect of the mass load of the electrode. Thus the loss can be reduced. Here, the Au electrode can feature the power of influence of about 40 times as much as that of the Al electrode, and as a result an elastic surface wave device can be obtained with the long-time delay characteristics and with less amount of loss.
JP1259679A 1979-02-06 1979-02-06 Elastic surface wave device Granted JPS55105426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1259679A JPS55105426A (en) 1979-02-06 1979-02-06 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1259679A JPS55105426A (en) 1979-02-06 1979-02-06 Elastic surface wave device

Publications (2)

Publication Number Publication Date
JPS55105426A true JPS55105426A (en) 1980-08-13
JPS6145892B2 JPS6145892B2 (en) 1986-10-11

Family

ID=11809722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1259679A Granted JPS55105426A (en) 1979-02-06 1979-02-06 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS55105426A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833309A (en) * 1981-08-21 1983-02-26 Toyo Commun Equip Co Ltd Slip wave resonator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833309A (en) * 1981-08-21 1983-02-26 Toyo Commun Equip Co Ltd Slip wave resonator
JPH0134411B2 (en) * 1981-08-21 1989-07-19 Toyo Communication Equip

Also Published As

Publication number Publication date
JPS6145892B2 (en) 1986-10-11

Similar Documents

Publication Publication Date Title
GB1491896A (en) Acoustic bulk mode suppressor
JPS56116317A (en) Material for elastic surface wave
JPS5575333A (en) Elastic surface wave filter
JPS55105426A (en) Elastic surface wave device
JPS53109458A (en) Element for elastic surface wave
JPS529389A (en) Surface acoustic wave device
JPS55123222A (en) Electromechanical converter for elastic surface wave
JPS55159612A (en) Elastic surface wave element
JPS5310246A (en) Attenuator for millimeter wave guide
JPS5647117A (en) Surface elastic wave filter element
JPS5533341A (en) Elastic surface wave device
JPS5797215A (en) Surface acoustic wave device
JPS53123051A (en) Filter for surface slip wave
JPS56149818A (en) Elastic surface wave device
JPS5648708A (en) Surface elastic wave filter
JPS5711520A (en) Elastic surface wave resonator
JPS54158895A (en) Elastic surface wave device
GB2029148A (en) Surface wave devices
JPS55105425A (en) Elastic surface wave device
JPS5549016A (en) Elastic surface-wave propagation element
JPS5399847A (en) Elastic surface wave device
JPS5715519A (en) Elastic surface wave device
JPS564916A (en) Elastic surface wave filter
JPS5768925A (en) Piezoelectric device
JPS5467790A (en) Elastic surface wave phase shifter