PROBLEM TO BE SOLVED: To provide a transmit/receive switching unit for an ultrasound system which isolates a receiving unit perfectly during a transmission period of an ultrasound signal.SOLUTION: The transmit/receive switching unit for ultrasound systems comprises: a plurality of diode bridges configured to have their respective one ends coupled to a transmitting unit and an ultrasound probe, and have their respective other ends coupled to a receiving unit and a switching module configured to be connected to the diode bridges, switch off the diode bridges to block transmitted ultrasound signals from being propagated to the receiving unit when the ultrasound signals are propagated, applies the diode bridges with a forward bias current to propagate the received signal to the receiving unit while a plurality of ultrasound signals (i.e., ultrasound echo signals) reflected from a target object are received.COPYRIGHT: (C)2010,JPO&INPIT【課題】本発明は、超音波信号を送信する間、受信部を完全に絶縁させる超音波システム用の送受信スイッチング装置が開示される。【解決手段】本発明による超音波システム用の送受信スイッチング装置は、一端が送信部および超音波プローブと連結され、他端が受信部と連結される複数のダイオードブリッジと、ダイオードブリッジに連結され、超音波信号を送信する間、ダイオードブリッジをオフ状態に切り替え、送信信号が受信部に伝達されるのを遮断し、対象体から反射される複数の超音波信号(即ち、超音波エコー信号)を受信する間、ダイオードブリッジに順方向バイアス電流を印加させて受信信号を受信部に伝達するスイッチングモジュールとを備える。【選択図】図1
