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    • 1. 发明授权
    • Start signal detector circuit
    • 启动信号检测电路
    • US08446179B2
    • 2013-05-21
    • US12095673
    • 2006-11-29
    • Tadashi MaedaTomoyuki Yamase
    • Tadashi MaedaTomoyuki Yamase
    • H03K5/153
    • H03D1/10F02D2041/0012F02D2200/0812H03D1/18
    • A non-linear effect of a rectifier element is enhanced, an input amplitude is increased by further taking advantage of a resonance circuit, and a rectification efficiency of a rectifier circuit for detection is improved, so that the gain of an amplifier circuit at a latter stage can be set low. RF input terminals 101, 102 are applied with signals at phases opposite to each other. A signal at terminal 102 is applied to a gate of transistor M1 through capacitor C3, and a signal at terminal 101 is applied to node N1 connected with a source of transistor M1 and a gate and a drain of transistor M2 through capacitor C1. 301, 302 designate terminals applied with DC biases, and L1, C15 and L2, C16 are series resonance circuits. Half-wave double voltage rectifier circuits comprised of M1, M2, C1-C3, R1 are connected in cascade at a plurality of stages.
    • 整流元件的非线性效应得到提高,通过进一步利用谐振电路来增加输入振幅,提高了用于检测的整流电路的整流效率,从而使放大电路的后级增益 舞台可以设置低。 RF输入端子101,102以相位相反的信号施加。 端子102处的信号通过电容器C3施加到晶体管M1的栅极,端子101处的信号通过电容器C1施加到与晶体管M1的源极和晶体管M2的栅极和漏极连接的节点N1。 301,302指示施加有直流偏置的端子,L1,C15和L2,C16是串联谐振电路。 由M1,M2,C1-C3,R1构成的半波双电压整流电路分级连接成多级。
    • 3. 发明申请
    • START SIGNAL DETECTOR CIRCUIT
    • 开始信号检测电路
    • US20110121864A1
    • 2011-05-26
    • US12095673
    • 2007-04-05
    • Tadashi MaedaTomoyuki Yamase
    • Tadashi MaedaTomoyuki Yamase
    • H03K5/153H03K3/01G05F1/10
    • H03D1/10F02D2041/0012F02D2200/0812H03D1/18
    • The nonlinearity effect of a rectifying element is enhanced, and further a resonant circuit is used to enlarge the input amplitude. Furthermore, the rectifying efficiency of a detection rectifier circuit is enhanced, thereby allowing the gain of an amplifier circuit in the following stage to be set to a low value. Signals having mutually opposite phases are inputted to RF input terminals (101,102). The signal at the terminal (102) is then inputted to the gate of a transistor (M1) via a capacitor (C3), while the signal at the terminal (101) is then inputted, via a capacitor (C1), to a node (N1) to which the source of the transistor (M1) and the gate and drain of a transistor (M2) are connected, whereby a capacitor (C2) is charged with a half-wave voltage-doubled rectified current. DC biases are inputted to terminals (301,302). There are formed series resonant circuits (L1,C15;L2,C16). A plurality of half-wave voltage-doubled rectifier circuits (M1,M2,C1-C3,R1) are connected in cascade.
    • 提高了整流元件的非线性效应,并且进一步使用谐振电路来扩大输入幅度。 此外,检测整流电路的整流效率提高,从而允许将后续放大器电路的增益设置为低值。 具有相互相反相位的信号被输入到RF输入端(101,102)。 然后,通过电容器(C3)将端子(102)处的信号输入到晶体管(M1)的栅极,然后通过电容器(C1)将端子(101)处的信号输入到节点 (M1)的源极和晶体管(M2)的栅极和漏极连接的晶体管(N1),由此电容器(C2)被充满半波电压倍增的整流电流。 DC偏压被输入到端子(301,302)。 形成串联谐振电路(L1,C15; L2,C16)。 多个半波倍压整流电路(M1,M2,C1-C3,R1)级联连接。
    • 4. 发明授权
    • Start signal detector circuit
    • 启动信号检测电路
    • US07663394B2
    • 2010-02-16
    • US12162148
    • 2007-01-11
    • Tomoyuki YamaseTadashi Maeda
    • Tomoyuki YamaseTadashi Maeda
    • G01R31/26
    • H02M7/103G01R21/10H02M7/217H03K17/145H03K17/302
    • A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal 103 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1 to M4 and capacitors C1 to C4) forming a rectifier circuit, and a voltage equal to the sum of the constant voltage applied to DC bias terminal 103 and a variation ΔVt of a threshold voltage of the MOS transistors is applied to DC bias terminal 104 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M5 to M8 and capacitors C5 to C8) forming a bias circuit.
    • 二极管连接的晶体管的阈值的变化被补偿以保持整流器电路的恒定的整流效率,从而能够稳定地检测起始信号。 将恒定电压施加到形成整流电路的级联半波倍压整流电路(包括MOS晶体管M1至M4和电容器C1至C4)的DC偏置端子103,以及等于施加到 直流偏置端子103和MOS晶体管的阈值电压的变化量ΔVt被施加到形成偏置电路的级联半波倍压整流电路(包括MOS晶体管M5至M8和电容器C5至C8)的DC偏置端子104。
    • 7. 发明授权
    • Amplification circuit
    • 放大电路
    • US07821334B2
    • 2010-10-26
    • US12298185
    • 2007-04-24
    • Tadashi MaedaTomoyuki Yamase
    • Tadashi MaedaTomoyuki Yamase
    • H03F1/14
    • H03F1/565H03F1/42H03F3/005H03F3/195H03F3/68
    • The present invention is aimed at realizing an amplifying circuit whose chip size is prevented from being significantly increased even if the number of compatible frequencies increases, and which has a wide dynamic range when it operates under a low voltage. The amplifying circuit includes a plurality of impedance converting circuits connected to each other by a switching circuit of a first type having a signal cutting-off function, a switching circuit of a second type connected to a path branched from an input side of the switching circuit of the first type, the switching circuit of the second type having a signal cutting-off function, amplifiers connected respectively to an output side of one of the impedance converting circuits in a final stage and to an output side of the switching circuit of the second type, and a control signal generating circuit for controlling connection/disconnection between said switching circuit of the first type and said switching circuit of the second type; wherein either one of the paths is selected to input a signal to one of the amplifiers.
    • 本发明的目的在于实现一种放大电路,即使在兼容频率增加的情况下,即使在低电压下工作也具有较大的动态范围,其芯片尺寸也被防止显着增加。 放大电路包括通过具有信号截止功能的第一类型的开关电路彼此连接的多个阻抗转换电路,连接到从开关电路的输入侧分支的路径的第二类型的开关电路 第一类型的开关电路,具有信号截止功能的第二类型的开关电路,分别连接到最终级中的一个阻抗转换电路的输出侧和第二类的开关电路的输出侧的放大器 以及用于控制所述第一类型的所述开关电路和所述第二类型的所述开关电路之间的连接/断开的控制信号发生电路; 其中选择所述路径中的任一个以将信号输入到所述放大器之一。
    • 10. 发明申请
    • START SIGNAL DETECTOR CIRCUIT
    • 开始信号检测电路
    • US20090010034A1
    • 2009-01-08
    • US12162148
    • 2007-01-11
    • Tomoyuki YamaseTadashi Maeda
    • Tomoyuki YamaseTadashi Maeda
    • H02M7/217
    • H02M7/103G01R21/10H02M7/217H03K17/145H03K17/302
    • A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1 to M4 and capacitors C1 to C4) forming a rectifier circuit, and a voltage equal to the sum of the constant voltage applied to DC bias terminal 103 and a variation ΔVt of a threshold voltage of the MOS transistors is applied to DC bias terminal 104 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M5 to M8 and capacitors C5 to C8) forming a bias circuit.
    • 二极管连接的晶体管的阈值的变化被补偿以保持整流器电路的恒定的整流效率,从而能够稳定地检测起始信号。 将恒定电压施加到形成整流电路的级联半波倍压整流电路(包括MOS晶体管M1至M4和电容器C1至C4)的DC偏置端子,以及等于施加到DC的恒定电压之和的电压 偏置端子103和MOS晶体管的阈值电压的变化量ΔVt被施加到形成偏置电路的级联半波倍压整流电路(包括MOS晶体管M5至M8和电容器C5至C8)的DC偏置端子104。