Title:
超音波イメージング・システム用の集積化低電圧送受信切換えスイッチ
Document Type and Number:
Japanese Patent JP4810092
Kind Code:
B2
Abstract:
A low-voltage transmit/receive switch that acts to protect sensitive low-voltage electronics from high-voltage pulse signals used to drive an ultrasonic transducer. The low-voltage transmit/receive switch comprises a series resistor and a parallel MOSFET pair. The parallel MOSFETs are low-voltage devices. The low-voltage transmit/receive switch is placed between the output of a high-voltage pulser and the input of a receive pre-amplifier. If dual high- and low-voltage pulsers are used, then the low-voltage pulser is connected so that it is also protected from the high-voltage pulse signals by the low-voltage transmit/receive switch. In an alternative embodiment, the low-voltage pulser and the receive pre-amplifier are protected from the high-voltage pulse signals by a high-voltage transmit/receive switch.
Inventors:
Robert Gee Woodnicki
Rayet A Fisher
Rayet A Fisher
Application Number:
JP2004380328A
Publication Date:
November 09, 2011
Filing Date:
December 28, 2004
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
A61B8/00; B06B1/02; G01N29/06; G03B42/06; H04B11/00
Domestic Patent References:
| JP5212034A | ||||
| JP9304512A |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa