Radar transponder,申请号EP19960108184-传众专利搜索

Radar transponder

申请公布号：EP0744628(A2)

申请号：EP19960108184

申请日期：1996.05.22

申请公布日期：1996.11.27

申请人：

MITSUBISHI DENKI KABUSHIKI KAISHA

发明人：DOCHI, TOHRU

分类号：G01S7/28;G01S13/75;G01S13/76;G01S13/79;(IPC1-7):G01S13/74

主分类号：G01S7/28

摘要：<p>A radar transponder for a stable and reliable response transmission upon reception of a weak radar signal having a reflection-conscious circuitry free from damage by a transmit effect, including a reception damage by the leakage of a powerful transmit wave signal and a transmission damage by the reflection of the powerful transmit wave signal. The reflection-conscious circuitry may include a circulator (2) coupled to the transmit/receive antenna (1) for selecting the powerful transmit wave signal or the weak radar signal, a receiving circuit provided after the circulator (2) for receiving the weak radar signal, and an SPDT switch (10) provided between the circulator (2) and the receiving circuit for passing an input of the weak radar signal to the receiving circuit in a receiving period with its ground function dormant and for leading an input of the powerful transmit wave signal to a ground using the ground function in a transmitting period. The SPDT switch (10) includes a reflectionless terminator (13) at the entry of the input signal, a diode (11b) having a ground end at the outlet of the input signal, a quarter-wave line (14) between the entry and the outlet and a drive signal input for driving the ground function. <IMAGE></p>