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1. (WO2018044489) TRANSMITTING AND RECEIVING DEVICE AND ULTRASOUND SYSTEM

Pub. No.:    WO/2018/044489    International Application No.:    PCT/US2017/045211
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 04 01:59:59 CEST 2017
IPC: B06B 1/02
H04B 1/44
G01S 7/52
Applicants: GENERAL ELECTRIC COMPANY
Inventors: LI, Jianlin
LI, Jing
SHANG, Weihua
HUANG, Baoming
WU, Heng
Title: TRANSMITTING AND RECEIVING DEVICE AND ULTRASOUND SYSTEM
Abstract:
The present invention discloses a transmitting and receiving device for an ultrasonic system, which comprises a transmitter, a receiver and at least two switch circuits connected in series. The transmitter is coupled to an ultrasonic transducer and generates high voltage signals to the ultrasonic transducer during a transmitting mode. The receiver is coupled to the ultrasonic transducer via the at least two switch circuits and receives low voltage signals from the ultrasonic transducer during a receiving mode. The at least two switch circuits are configured to share voltage drop of the high voltage signals to isolate the high voltage signals during the transmitting mode and allow the low voltage signals to pass through during the receiving mode. It also discloses an ultrasonic system having the transmitting and receiving device.