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    • 8. 发明申请
    • Activation signal output circuit and determining circuit
    • 激活信号输出电路和确定电路
    • US20060071654A1
    • 2006-04-06
    • US10536338
    • 2003-11-26
    • Kazuo MizunoRyu KimuraYoshiyuki KagoYukiomi TanakaKazuhiko EndoHisanori UdaHiroaki Hayashi
    • Kazuo MizunoRyu KimuraYoshiyuki KagoYukiomi TanakaKazuhiko EndoHisanori UdaHiroaki Hayashi
    • G01R25/00
    • H03D1/10H03D1/18
    • A start signal output circuit having an RF/DC conversion circuit to which radio frequency power (RF) of specified frequency is inputted and from which a direct current potential (DC) is outputted, comprises a detection/amplification circuit 210 which includes a voltage doubler wave-detector circuit 10 configured including a sensing diode Q1 (Tr34) for sensing the RF power, a differential amplifier including differential pair transistors Tr31 and Tr32, and a current mirror circuit. A base current of one Tr31 of the differential pair transistors is brought into substantial agreement with a DC component of a current flowing through the sensing diode Q1 (Tr34). A total of currents flowing through the differential pair transistors Tr31 and Tr32 is regulated to a substantially constant value by the current mirror circuit. Thus, the start signal output circuit which is small in size, high in sensitivity and low in power consumption can be realized.
    • 具有输入了特定频率的射频功率(RF)并从其输出直流电位(DC)的RF / DC转换电路的启动信号输出电路包括检测/放大电路210,其包括倍压器 波检测器电路10被配置为包括用于感测RF功率的感测二极管Q 1(Tr 34),包括差分对晶体管Tr 31和Tr 32的差分放大器和电流镜电路。 差分对晶体管的一个Tr 31的基极电流与流经感测二极管Q 1(Tr 34)的电流的直流分量基本一致。 流过差分对晶体管Tr 31和Tr 32的总电流通过电流镜电路被调节到基本恒定的值。 因此,可以实现尺寸小,灵敏度高,功耗低的启动信号输出电路。