JPS57121343A - Ultrasonic wave transmitting and receiving circuit - Google Patents
Ultrasonic wave transmitting and receiving circuitInfo
- Publication number
- JPS57121343A JPS57121343A JP721081A JP721081A JPS57121343A JP S57121343 A JPS57121343 A JP S57121343A JP 721081 A JP721081 A JP 721081A JP 721081 A JP721081 A JP 721081A JP S57121343 A JPS57121343 A JP S57121343A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- ultrasonic
- coil
- coils
- receiving circuit
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
PURPOSE:To remove restrictions due to the change of the resonance frequency of ultrasonic waves on materials of an oscillator, by switching the value of the coil in an ultrasonic wave transmitting and receiving circuit by a switch. CONSTITUTION:Two coils L1 and L2 are provided, and the coil L1 has the frequency coincident with a minimum one of used frequencies of an ultrasonic diagnostic device, and the coil L2 is connected in series to a switch SW for the purpose of making the frequency of the coil L1 coincident with another frequency, and parallel values of coils L1 and L2 coincide with another frequency. That is, the number of coils and switches is increased to correspond to many kinds of ultrasonic frequencies. Thus, in case the used frequency of the ultrasonic probe are different in diagnostic positions of a living body, the ultrasonic probe is prevented from having a large form and a complicated structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP721081A JPS57121343A (en) | 1981-01-22 | 1981-01-22 | Ultrasonic wave transmitting and receiving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP721081A JPS57121343A (en) | 1981-01-22 | 1981-01-22 | Ultrasonic wave transmitting and receiving circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57121343A true JPS57121343A (en) | 1982-07-28 |
Family
ID=11659635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP721081A Pending JPS57121343A (en) | 1981-01-22 | 1981-01-22 | Ultrasonic wave transmitting and receiving circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57121343A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01113031A (en) * | 1987-10-27 | 1989-05-01 | Yokogawa Medical Syst Ltd | Ultrasonic diagnostic apparatus |
JPH02111351A (en) * | 1988-10-21 | 1990-04-24 | Aloka Co Ltd | Transceiving circuit for ultrasonic diagnostic device |
-
1981
- 1981-01-22 JP JP721081A patent/JPS57121343A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01113031A (en) * | 1987-10-27 | 1989-05-01 | Yokogawa Medical Syst Ltd | Ultrasonic diagnostic apparatus |
JPH02111351A (en) * | 1988-10-21 | 1990-04-24 | Aloka Co Ltd | Transceiving circuit for ultrasonic diagnostic device |
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