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    • 21. 发明申请
    • アナログ乗算回路、可変ゲインアンプ、検波回路及び物理量センサ
    • 模拟多路器电路,可变增益放大器,检测电路和物理量传感器
    • WO2012147784A1
    • 2012-11-01
    • PCT/JP2012/061075
    • 2012-04-25
    • シチズンホールディングス株式会社永田 洋一
    • 永田 洋一
    • H03F1/30H03D1/18H03D7/14H03F3/34H03G3/02H03F3/45
    • G06G7/00G01C19/5776H03D7/1433H03D7/145H03D7/1458H03D7/1491H03D2200/0025H03D2200/0033H03F3/193H03F3/3022H03F3/45183H03F3/45632H03F2203/45244H03G1/0023
    •  ギルバート乗算コアを構成するバイポーラトランジスタの特性が悪くても、演算精度が悪化しないようにする。 ギルバート乗算コア101とその線形化回路102とを備えたアナログ乗算部100Aと、補正電流生成回路3とからなる。その補正電流生成回路3は、ギルバート乗算コア101を構成するバイポーラトランジスタQ1~Q4と同じ電流増幅率αを持つ第1のレプリカトランジスタであるバイポーラトランジスタQ7のエミッタに、定電流源301によってバイアス電流である定電流I 0 を流し、そのコレクタ側にα・I 0 の電流を生成する。その電流をMOSトランジスタ305~308を介して補正電流である電流α・I 0 として出力し、ギルバート乗算コア101の一方の入力信号±K1・Vyに対してそれぞれ加算して、そのバイアス電流成分である定電流I 0 を電流α・I 0 に補正することにより、乗算結果である出力信号における電流増幅率αの影響を除去する。
    • 在本发明中,即使包括吉尔伯特乘法器的双极晶体管的特性差,运算精度也不会降低。 模拟乘法器电路包括具有吉尔伯特乘法器芯(101)及其线性化电路(102)的模拟乘法器单元(100A)和校正电流产生电路(3)。 通过恒流源(301),校正电流产生电路(3)向双极晶体管Q7的发射极发射偏置电流恒定电流(IO),双极晶体管Q7是与双极晶体管具有相同电流增益a的第一复制晶体管 包括吉尔伯特乘法器内核(101)的Q1至Q4,并在晶体管的集电极侧产生电流a·IO。 该电流通过MOS晶体管(305-308)作为校正电流a·IO输出,并将该电流分别加到作为吉尔伯特乘法器内核(101)上的输入信号之一的±Ki·Vy,并校正偏置 电流分量恒流IO到a·IO,电流增益a的影响被滤除出乘法结果输出信号。
    • 22. 发明申请
    • VARIABLE-GAIN MIXER FOR A WIRELESS RECEIVER WITH CURRENT COMPENSATION
    • 具有电流补偿的无线接收器的可变增益混频器
    • WO2012089755A1
    • 2012-07-05
    • PCT/EP2011/074130
    • 2011-12-28
    • ACCENT S.p.A.SOUTO DIEZ, Anabel
    • SOUTO DIEZ, Anabel
    • H03D7/14H03D7/18
    • H04B1/16H03D7/1441H03D7/1458H03D7/1491H03D7/165H03D7/18H03D2200/0025H03D2200/0043H03D2200/0084H03D2200/0088
    • A variable-gain mixer (210) for down-converting a modulated input signal (S RF ) into a modulated output signal (S IF ) in a wireless receiver (120) is proposed. The mixer includes means (310) for selecting a mixer gain (Gv) according to a power level of the input signal, amplifying means (305) for amplifying the input signal into a modulated intermediate current (I RF + ,I RF - ) in response to a control signal indicative of the selected mixer gain, the intermediate current having an intermediate component, consisting of a direct current, varying according to the selected mixer gain, means (315,320) for generating the output signal from the intermediate current, the output signal having an output component, consisting of a direct current or voltage, depending on the intermediate component; in the solution according to an embodiment of the invention, the mixer further includes means (415 i ,Sj i ) for setting a compensation current in response to the control signal for compensating the variation of the intermediate component, and means (Mj i + ,Mj i - ) for adding the compensation current to the intermediate current.
    • 提出了一种用于在无线接收机(120)中将调制输入信号(SRF)下变频为调制输出信号(SIF)的可变增益混频器(210)。 混频器包括用于根据输入信号的功率电平选择混频器增益(Gv)的装置(310),用于响应于所述调制中间电流(IRF +,IRF-)将输入信号放大为调制中间电流 指示所选择的混频器增益的控制信号,所述中间电流具有由根据所选择的混频器增益而变化的直流电的中间分量,用于从中间电流产生输出信号的装置(315,320),所述输出信号具有 输出分量,由直流或电压组成,取决于中间分量; 在根据本发明的实施例的解决方案中,混频器还包括用于响应于用于补偿中间分量的变化的控制信号设置补偿电流的装置(415i,Sji),以及装置(Mji +,Mji-) 用于将补偿电流加到中间电流。
    • 24. 发明申请
    • STEPPED GAIN MIXER
    • STEPPED增益混合器
    • WO2009117708A1
    • 2009-09-24
    • PCT/US2009/037885
    • 2009-03-20
    • QUALCOMM INCORPORATEDWANG, XinweiZHANG, Xiangdong
    • WANG, XinweiZHANG, Xiangdong
    • H03D7/14H03D7/12
    • H03D7/1441H03D7/125H03D7/1458H03D7/1466H03D7/1491H03D7/165H03D2200/0025
    • An amplified stepped gain mixer portion improves the signal-to-noise ratio of a receiver by using multiple gain states to improve linearity. The mixer portion includes an amplifier, a switch and two transistors. The amplifier output is coupled to the sources of the two transistors. An oscillating signal is present on the transistor gates. The transistor drains are coupled to one another through the switch when the switch is closed. The mixer portion operates in two modes. In a 1/2 mode, the mixer portion output current flows only through the first transistor and not through the second transistor because the switch is open. In a 2/2 mode, the mixer portion output current flows through both transistors. The mixer portion is configured such that the switch is closed when a switching signal is asserted. The switching signal is asserted when a bit of a mixer control register is written to.
    • 放大的阶梯式增益混频器部分通过使用多个增益状态来改善接收机的信噪比以改善线性度。 混频器部分包括放大器,开关和两个晶体管。 放大器输出耦合到两个晶体管的源极。 振荡信号存在于晶体管栅极上。 当开关关闭时,晶体管漏极通过开关彼此耦合。 混频器部分以两种模式工作。 在1/2模式下,由于开关断开,混频器部分的输出电流仅流过第一晶体管而不通过第二晶体管。 在2/2模式中,混频器部分输出电流流过两个晶体管。 混频器部分被配置成当断言切换信号时开关闭合。 当混频器控制寄存器的位被写入时,切换信号被置位。
    • 25. 发明申请
    • MULTIPLIER, MIXER, MODULATOR, RECEIVER AND TRANSMITTER
    • MULTIPLIER,MIXER,MODULATOR,RECEIVER AND TRANSMITTER
    • WO2009030938A2
    • 2009-03-12
    • PCT/GB2008/050637
    • 2008-07-29
    • TOUMAZ TECHNOLOGY LIMITEDWONG, Alan Chi Wai
    • WONG, Alan Chi Wai
    • H03D7/14
    • H03D7/1441H03D7/1458H03D7/1491H03D7/165H03D2200/0025H03D2200/0033
    • A multiplier is provided, for example, for use as a mixer in a modulator of a radio frequency transmitter. The multiplier multiplies a first alternating signal of constant amplitude by a second signal, for example, in the form of a carrier wave from a local oscillator. The multiplier comprises a transconductance stage for converting the first signal to a differential output current and a current switching stage for switching the differential output current in accordance with the second signal. The transconductance stage comprises a plurality of offset pairs (10-13) of transistors, whose inputs and outputs are connected in parallel. The switching stage comprises cross-coupled pairs of transistors (16-19) which, together with the transconductance stage, form a Gilbert cell. The relative gains of the transistors (10-13) of each offset pair are such that a minimum in the third harmonic distortion characteristic of the multiplier occurs substantially at the amplitude of the first signal.
    • 提供乘法器,例如用作射频发射机的调制器中的混频器。 乘法器将恒定幅度的第一交替信号乘以第二信号,例如以来自本地振荡器的载波的形式。 乘法器包括用于将第一信号转换为差分输出电流的跨导级和用于根据第二信号切换差动输出电流的电流开关级。 跨导级包括晶体管的多个偏移对(10-13),其输入和输出并联连接。 开关级包括交叉耦合的晶体管对(16-19),其与跨导级一起形成吉尔伯特(Gilbert)单元。 每个偏移对的晶体管(10-13)的相对增益使得乘法器的三次谐波失真特性中的最小值基本上在第一信号的幅度上发生。
    • 26. 发明申请
    • MULTI-FUNCTION PASSIVE FREQUENCY MIXER
    • 多功能无源频率混频器
    • WO2008000908A1
    • 2008-01-03
    • PCT/FI2007/050391
    • 2007-06-26
    • NOKIA CORPORATIONVÄISÄNEN, Risto
    • VÄISÄNEN, Risto
    • H03D7/12H03D7/14H03G3/20H02M5/32
    • H02M7/25H03D7/1441H03D7/1458H03D7/1466H03D7/1483H03D2200/0025
    • A frequency mixing device performing voltage multiplying and low-pass filtering operations in addition to the frequency mixing is provided. The three operations may be carried out with the same components by designing the frequency mixer appropriately. The frequency mixer comprises a balanced input port (IN1, IN2) to receive a balanced input signal, an oscillator signal input port to receive a first and a second oscillator signal (LO_0, LO_180) and a first (C41 ), a second (C42), and a third (C43) capacitors. First switching means (33, 34) are arranged to connect, in response to the first oscillator signal (LO_0), the first (C41 ) and the second (C42) capacitors between a first (IN1 ) and a second (IN2) input terminals of the balanced input port. Second switching means (31, 32) are arranged to connect, in response to the second oscillator signal (LO_180), the first capacitor (C41 ) between the first input terminal (IN1 ) and the third capacitor (C43) and the second capacitor (C42) between the second input terminal (IN2) and the third capacitor (C43). An output port (OLJT1, OUT2) is connected to terminals of the third capacitor (C43).
    • 提供了除了频率混合之外执行电压倍增和低通滤波操作的频率混合装置。 可以通过适当地设计混频器,通过相同的部件来进行三个操作。 混频器包括用于接收平衡输入信号的平衡输入端口(IN1,IN2),用于接收第一和第二振荡器信号(LO_0,LO_180)和第一(C41),第二(C42)的振荡器信号输入端口 )和第三(C43)电容器。 第一开关装置(33,34)被布置成响应于第一振荡器信号(LO_0)连接第一(IN1)和第二(IN2)输入端之间的第一(C41)和第二(C42)电容器 的平衡输入端口。 第二开关装置(31,32)被布置成响应于第二振荡器信号(LO_180)连接第一输入端子(IN1)和第三电容器(C43)和第二电容器(C43)之间的第一电容器(C41) C42)在第二输入端子(IN2)和第三电容器(C43)之间。 输出端口(OLJT1,OUT2)连接到第三电容器(C43)的端子。