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    • 91. 发明公开
    • Pulse radar system
    • Pulsradar
    • EP1750140A2
    • 2007-02-07
    • EP06015625.4
    • 2006-07-26
    • TDK Corporation
    • Ikeda, Hiroshi
    • G01S7/288G01S7/292G01S13/10G01S13/22H03D7/14G01S13/18G01S13/93
    • G01S13/227G01S7/288G01S7/2923G01S13/103G01S13/18G01S13/931H03D7/1408
    • A pulse radar system includes: a pulse output circuit that outputs a periodic transmission pulse and a gate pulse having a cycle which is a rational multiple of a cycle of the transmission pulse and is different from a cycle of the transmission pulse; a transmission circuit that generates and sends a transmission pulse wave based on a transmission pulse from the transmission circuit; a transmission antenna that radiates a transmission pulse wave from the transmission circuit; a reception antenna that receives a reception pulse wave reflected from an object in transmission pulse waves from the transmission antenna; a reception circuit that demodulates a reception pulse wave from the reception antenna and outputs a reception pulse; and an extracting circuit that extracts and outputs a reception pulse synchronizing with a gate pulse from the pulse output circuit, among reception pulses from the reception circuit.
    • 脉冲雷达系统包括:输出周期性传输脉冲的脉冲输出电路和具有作为发送脉冲的周期的有理倍数且与发送脉冲的周期不同的周期的门脉冲; 发送电路,其根据来自发送电路的发送脉冲生成发送发送脉波; 发射天线,其从发射电路辐射发射脉冲波; 接收天线,其从发送天线接收从发送脉冲波中的物体反射的接收脉波; 接收电路,对接收天线的接收脉波进行解调,并输出接收脉冲; 以及提取电路,在来自接收电路的接收脉冲中,从脉冲输出电路提取并输出与门脉冲同步的接收脉冲。
    • 94. 发明公开
    • SENSOR FRONT-END FOR VEHICLE CLOSING VELOCITY SENSOR
    • 一个KRAFTFAHRZEUGS-接近型传感器前端
    • EP1463958A1
    • 2004-10-06
    • EP02794243.2
    • 2002-12-12
    • Tyco Electronics Corporation
    • PUGLIA, Kenneth, Vincent
    • G01S13/18
    • G01S13/18
    • A sensor front end is disclosed that is able to discriminate objects based on their range from the sensor. The sensor includes an antenna that transmits a sensor signal and, if an object is present receives a reflected signal therefrom. A pulsed oscillator provides a pulsed first signal having a first frequency and phase, and wherein the pulsed oscillator provides the pulsed first signal for a predetermined pulse duration and with a predetermined pulse repetition frequency. The pulsed oscillator provides the p0pul sed first signal to a first input port of a dual mode mixer that is further coupled to the antenna via a second port. The dual mode mixer transmits a portion of the pulsed first signal from the first input port to the second port and thus to the antenna to be transmitted as the sensor signal. In addition, the dual mode mixer then provides a mixed signal as an output at a third port. Thus, the pulsed first signal provides both the signal to be transmitted as the sensor signal and the local oscillator signal for the mixer as well. The dual mode mixer will only provide a mixed signal output if the received reflected signal is present in the dual mode mixer concurrently with the pulsed first signal. Accordingly, an object can only be detected when the range to the object is such that the signal propagation time to and from the object is less than or equal to the predetermined pulse length of the pulsed first signal.