JPS62192713U - - Google Patents
Info
- Publication number
- JPS62192713U JPS62192713U JP8177486U JP8177486U JPS62192713U JP S62192713 U JPS62192713 U JP S62192713U JP 8177486 U JP8177486 U JP 8177486U JP 8177486 U JP8177486 U JP 8177486U JP S62192713 U JPS62192713 U JP S62192713U
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic probe
- circuit
- crosstalk
- transducer
- transmitting
- 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
- 239000000523 sample Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Description
第１図は本考案の一実施例の超音波探触子の構
成図、第２図は従来の超音波探触子の構成図、第
３図は従来の超音波探触子において生ずるクロス
トークの説明図、第４図はクロストークをキヤン
セルする信号の状態を示す説明図である。
１……送信用発振器、２……トランスデユーサ
、３……送信用振動子、４……受信用振動子、５
……増幅器、６……信号処理回路、７……送信回
路、８……受信回路、９……変圧器。
Fig. 1 is a block diagram of an ultrasonic probe according to an embodiment of the present invention, Fig. 2 is a block diagram of a conventional ultrasonic probe, and Fig. 3 is a diagram showing the crosstalk that occurs in a conventional ultrasonic probe. FIG. 4 is an explanatory diagram showing the state of a signal for canceling crosstalk. 1... Transmission oscillator, 2... Transducer, 3... Transmission transducer, 4... Receiving transducer, 5
...Amplifier, 6...Signal processing circuit, 7...Transmission circuit, 8...Reception circuit, 9...Transformer.
Claims (1)
ラ用の超音波探触子において、送信信号の一部を
送信回路からのクロストーク成分の位相とは逆位
相にし、クロストークを略キヤンセルする程度の
振幅のキヤンセル信号として受信回路に帰還させ
る結合回路を具備したことを特徴とする超音波探
触子。 In a CW Doppler ultrasonic probe consisting of a transmitting transducer and a receiving transducer, a part of the transmitted signal is set in the opposite phase to the phase of the crosstalk component from the transmitting circuit, to the extent that the crosstalk is almost cancelled. An ultrasonic probe characterized in that it is equipped with a coupling circuit that feeds back to a receiving circuit as a cancel signal with an amplitude of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8177486U JPS62192713U (en) | 1986-05-29 | 1986-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8177486U JPS62192713U (en) | 1986-05-29 | 1986-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192713U true JPS62192713U (en) | 1987-12-08 |
Family
ID=30933815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8177486U Pending JPS62192713U (en) | 1986-05-29 | 1986-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192713U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136336A (en) * | 1982-02-08 | 1983-08-13 | 横河電機株式会社 | Ultrasonic cw doppler system |
| JPS5962042A (en) * | 1982-09-30 | 1984-04-09 | 富士通株式会社 | Ultrasonic transmitting and receiving circuit of ultrasonic diagnostic apparatus |
| JPS59171543A (en) * | 1983-03-18 | 1984-09-28 | 三菱電機株式会社 | Ultrasonic diagnostic apparatus |
-
1986
- 1986-05-29 JP JP8177486U patent/JPS62192713U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136336A (en) * | 1982-02-08 | 1983-08-13 | 横河電機株式会社 | Ultrasonic cw doppler system |
| JPS5962042A (en) * | 1982-09-30 | 1984-04-09 | 富士通株式会社 | Ultrasonic transmitting and receiving circuit of ultrasonic diagnostic apparatus |
| JPS59171543A (en) * | 1983-03-18 | 1984-09-28 | 三菱電機株式会社 | Ultrasonic diagnostic apparatus |
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