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公开(公告)号：US07973586B2
公开(公告)日：2011-07-05
申请号：US12532530
申请日：2008-03-17
IPC分类号： G06G7/12
摘要： A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system.
摘要翻译： 采样混频器包括TA（跨导放大器），连接到TA和TA的同相混频器部分，与同相混频器部分并联连接的反相混频器部分和用于产生控制信号的信号发生器 分别用于同相混合器部分和反相混合器部分。 构成使用通过使用不同的跨导进行电流转换的信号的IIR滤波器，从而除了电容比之外，可以通过加权跨导来设计滤波器特性。 结果，可以获得宽带滤波器特性和带通滤波器特性，并且可以通过设计适合于无线电通信系统的滤波特性来抑制接收灵敏度的劣化。
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公开(公告)号：US20100201424A1
公开(公告)日：2010-08-12
申请号：US12680326
申请日：2008-09-25
IPC分类号： H03K5/08
CPC分类号： H03H19/004 , H03H15/00
摘要： The sampling filter apparatus 100 includes the first sampling switch 130, the second sampling switch 131, the first integrator 1500 for integrating the charge input from the first sampling switch, the second integrator 1501 for integrating the charge input from the second sampling switch, a plurality of integrators connected to both of the first integrator and the second integrator via a charging switch, respectively, the control section 140, a plurality of charging switches, and a plurality of discharge switches. A charge input from the sampling switch 130, a charge accumulated in the capacitor 1500 and a charge accumulated in a capacitor 1510 are shared by the capacitor 1500, the capacitor 1510 and the capacitor 1530, and the charge accumulated in the capacitor 1530 is output.
摘要翻译： 采样滤波器装置100包括第一采样开关130，第二采样开关131，用于对从第一采样开关输入的电荷进行积分的第一积分器1500，用于对从第二采样开关输入的电荷进行积分的第二积分器1501， 分别通过充电开关连接到第一积分器和第二积分器两者的积分器，控制部分140，多个充电开关和多个放电开关。 从采样开关130输入的电荷，积累在电容器1500中的电荷和电容器1510中累积的电荷被电容器1500，电容器1510和电容器1530共用，并且输出积累在电容器1530中的电荷。
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公开(公告)号：US20110221507A1
公开(公告)日：2011-09-15
申请号：US13115398
申请日：2011-05-25
IPC分类号： G06G7/12
摘要： A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system.
摘要翻译： 采样混频器包括TA（跨导放大器），连接到TA和TA的同相混频器部分，与同相混频器部分并联连接的反相混频器部分和用于产生控制信号的信号发生器 分别用于同相混合器部分和反相混合器部分。 构成使用通过使用不同的跨导进行电流转换的信号的IIR滤波器，从而除了电容比之外，可以通过加权跨导来设计滤波器特性。 结果，可以获得宽带滤波器特性和带通滤波器特性，并且可以通过设计适合于无线电通信系统的滤波特性来抑制接收灵敏度的劣化。
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公开(公告)号：US20110013736A1
公开(公告)日：2011-01-20
申请号：US12812655
申请日：2009-01-16
申请人： Satoshi Tsukamoto , Noriaki Saito , Katsuaki Abe , Kentaro Miyano , Yoshifumi Hosokawa , Yasuyuki Naito
发明人： Satoshi Tsukamoto , Noriaki Saito , Katsuaki Abe , Kentaro Miyano , Yoshifumi Hosokawa , Yasuyuki Naito
CPC分类号： H03H19/004
摘要： A sampling filter device wherein the filter characteristic is variable without using a control signal of a complicated waveform is provided. A sampling filter device 105 has integration capacitors 130 and 131, an integration time adjustment section 180, and a plurality of switches 100, 101, 110, and 111. Input current is integrated in different time duration with one clock and is stored in the integration capacitors 130 and 131 and charges stored in the integration capacitor from several clocks before to one clock before are added and the result is output. When charge is stored in the integration capacitors 130 and 131 with each clock, the integration time duration is changed, whereby it is made possible to weight and add output charge and the filter characteristic changes.
摘要翻译： 提供了一种采样滤波器装置，其中滤波器特性是可变的，而不使用复杂波形的控制信号。 采样滤波器装置105具有积分电容器130和131，积分时间调整部分180和多个开关100,101,110和111.输入电流在一个时钟内以不同的持续时间被积分并被存储在积分 电容器130和131以及存储在积分电容器中的电荷从加到之前的一个时钟之前的几个时钟相加，并且输出结果。 当在每个时钟存储积分电容器130和131中的电荷时，积分持续时间被改变，从而可以对输出电荷进行加权和增加并且滤波器特性改变。
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公开(公告)号：US20100167669A1
公开(公告)日：2010-07-01
申请号：US12303936
申请日：2007-06-08
申请人： Yoshifumi Hosokawa , Katsuaki Abe , Kentaro Miyano
发明人： Yoshifumi Hosokawa , Katsuaki Abe , Kentaro Miyano
CPC分类号： H03H15/00 , G11C27/024 , H03D7/1441 , H03D7/1483 , H03D7/166
摘要： Provided is a discrete filter capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component. In a sampling mixer (100), a control signal generation unit (104) generates a plurality of control signals having the same frequency and different phases. A convolution capacity unit (110) integrates the discrete signals obtained by sampling reception signals by using convolution capacitors at a timing based on the control signals. The signals integrated by the convolution capacitors are successively emitted at the timing based on a control signal other than the control signals used for the integration timing. Cb (15) integrates the emitted discrete signals. Thus, by adjusting the number of the convolution capacitors arranged in parallel to one another and the capacitance of each of the convolution capacitors, it is possible to realize a sampling mixer capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component.
摘要翻译： 提供了能够调整陷波数和陷波频率并容易消除特定频率分量的离散滤波器。 在采样混频器（100）中，控制信号生成单元（104）产生具有相同频率和不同相位的多个控制信号。 卷积容量单元（110）通过在基于控制信号的定时使用卷积电容来对通过对接收信号进行采样而获得的离散信号进行积分。 由卷积电容器集成的信号基于除了用于积分定时的控制信号之外的控制信号的定时连续地发射。 Cb（15）集成了发射的离散信号。 因此，通过调整彼此并联布置的卷积电容器的数量和每个卷积电容器的电容，可以实现能够调节陷波数和陷波频率的采样混频器，并且容易地消除特定的 频率分量。
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公开(公告)号：US20100093302A1
公开(公告)日：2010-04-15
申请号：US12529900
申请日：2008-03-03
IPC分类号： H04B1/26
CPC分类号： H03D3/006 , H03D7/1441 , H03D7/1458 , H03D2200/006 , H03D2200/0084 , H03D2200/009 , H03M1/0682 , H03M1/124 , H04B1/30 , H04L25/0272
摘要： Provided are a direct sampling circuit and a receiver using a discrete time analog process and having a filter effect of a steep attenuation characteristic in a narrow-pass band without lowering a sampling rate. In a discrete time direct sampling circuit (13), the positive phase side and the inverse phase side are both sampled by a local signal for a differential current output of a differential voltage/current conversion unit (1011) and electric charge is accumulated in a charge sampling capacitor. The latest accumulated charge at the positive phase side and charge accumulated at the inverse phase side before a predetermined number of samples are combined with the charge accumulated in a history capacitor (1043) in the past. Thus, it is possible to realize equivalently high-degree FIR filter characteristic.
摘要翻译： 提供了直接采样电路和接收机，其使用离散时间模拟处理，并且具有在窄通带中具有陡峭衰减特性的滤波器效应，而不降低采样率。 在离散时间直接采样电路（13）中，通过用于差分电压/电流转换单元（1011）的差分电流输出的本地信号对正相侧和反相侧进行采样，并且电荷累积在 充电采样电容器。 过去在正相侧的最新累积电荷和在预定数量的采样之前的逆相位处累积的电荷与累积在历史电容器（1043）中的电荷组合。 因此，可以实现等效的高度FIR滤波器特性。
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公开(公告)号：US08032094B2
公开(公告)日：2011-10-04
申请号：US12303936
申请日：2007-06-08
申请人： Yoshifumi Hosokawa , Katsuaki Abe , Kentaro Miyano
发明人： Yoshifumi Hosokawa , Katsuaki Abe , Kentaro Miyano
CPC分类号： H03H15/00 , G11C27/024 , H03D7/1441 , H03D7/1483 , H03D7/166
摘要： Provided is a discrete filter capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component. In a sampling mixer (100), a control signal generation unit (104) generates a plurality of control signals having the same frequency and different phases. A convolution capacity unit (110) integrates the discrete signals obtained by sampling reception signals by using convolution capacitors at a timing based on the control signals. The signals integrated by the convolution capacitors are successively emitted at the timing based on a control signal other than the control signals used for the integration timing. Cb (15) integrates the emitted discrete signals. Thus, by adjusting the number of the convolution capacitors arranged in parallel to one another and the capacitance of each of the convolution capacitors, it is possible to realize a sampling mixer capable of adjusting the number of notches and the notch frequency and easily eliminating a particular frequency component.
摘要翻译： 提供了能够调整陷波数和陷波频率并容易消除特定频率分量的离散滤波器。 在采样混频器（100）中，控制信号生成单元（104）产生具有相同频率和不同相位的多个控制信号。 卷积容量单元（110）通过在基于控制信号的定时使用卷积电容来对通过对接收信号进行采样而获得的离散信号进行积分。 由卷积电容器集成的信号基于除了用于积分定时的控制信号之外的控制信号的定时连续地发射。 Cb（15）集成了发射的离散信号。 因此，通过调整彼此并联布置的卷积电容器的数量和每个卷积电容器的电容，可以实现能够调节陷波数和陷波频率的采样混频器，并且容易地消除特定的 频率分量。
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公开(公告)号：US20100182077A1
公开(公告)日：2010-07-22
申请号：US12667370
申请日：2008-07-03
IPC分类号： H04B1/10
CPC分类号： H03H15/00 , H03D7/1441 , H03D7/1458 , H03D7/1483
摘要： A sampling filter of such circuitry as not requiring a high frequency REF signal even if the number of decimation is decreased. In the sampling filter, the rotate capacitor in each switched capacitor circuit including Cr (7a-7d) arranged in four parallel arrays operates in four phases of integration, discharge, reset and feedback different from each other at the same timing. Consequently, a control signal for driving the switched capacitor circuit is used commonly. As a result, the circuit scale of a DCU (104) is reduced and the frequency of the REF signal can be lowered to the frequency of an LO signal even in operation without decimation.
摘要翻译： 这种电路的采样滤波器，即使抽取次数减少也不需要高频率的REF信号。 在采样滤波器中，包括布置在四个并联阵列中的Cr（7a-7d）的每个开关电容器电路中的旋转电容器在相同的定时在积分，放电，复位和反馈的四个相位中工作。 因此，通常使用用于驱动开关电容电路的控制信号。 结果，即使在没有抽取的情况下，DCU（104）的电路规模减小，也可以将REF信号的频率降低到LO信号的频率。
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公开(公告)号：US20100109746A1
公开(公告)日：2010-05-06
申请号：US12532530
申请日：2008-03-17
摘要： A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer section, and a signal generator for generating a control signal for the in-phase mixer section and the opposite-phase mixer section respectively. The IIR filter using signals that underwent a current conversion by using the different transconductances is constructed, so that the filter characteristic can be designed by a weighting of the transconductance in addition to a capacitance ratio. As a result, the wide-band filter characteristic and the band-pass filter characteristic can be obtained, and deterioration of the receiving sensitivity can be suppressed by designing the filter characteristic suitable for the radio communication system.
摘要翻译： 采样混频器包括TA（跨导放大器），连接到TA和TA的同相混频器部分，与同相混频器部分并联连接的反相混频器部分和用于产生控制信号的信号发生器 分别用于同相混合器部分和反相混合器部分。 构成使用通过使用不同的跨导进行电流转换的信号的IIR滤波器，从而除了电容比之外，可以通过加权跨导来设计滤波器特性。 结果，可以获得宽带滤波器特性和带通滤波器特性，并且可以通过设计适合于无线电通信系统的滤波特性来抑制接收灵敏度的劣化。
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公开(公告)号：US20090270061A1
公开(公告)日：2009-10-29
申请号：US12094495
申请日：2006-11-22
CPC分类号： H03D7/125 , H03D2200/006
摘要： It is an object of the present invention to provide a sampling mixer and a receiver, capable of optimizing a sampling rate of an output signal in response to a fractional band of a modulation band with respect to an RF frequency of the received signal. A sampling mixer of the present invention, includes a history capacitor 6 for integrating a received signal that is converted in terms of current in a continuous time, rotation capacitors 7 to 14 for repeating an integration and a discharge of an input signal, a digital controller 104 for controlling integration periods of the rotation capacitors 7 to 14, and a controlling portion 105 for controlling discharges of the rotation capacitors 7 to 14, wherein the number of the rotation capacitors 7 to 14 connected at a time to a buffer capacitor 15 is switched in answer to a fractional band of the modulation band with respect to a RF frequency. As a result, the decimation ratio of the sampling rate can be varied, and the quantization noise generated in the AD conversion can be reduced.
摘要翻译： 本发明的目的是提供一种采样混频器和接收机，其能够响应于相对于接收信号的RF频率的调制频带的分数频带来优化输出信号的采样率。 本发明的采样混频器包括：历史电容器6，用于对连续时间中的电流进行转换的接收信号进行积分;旋转电容器7至14，用于重复输入信号的积分和放电;数字控制器 104，用于控制旋转电容器7至14的积分周期，以及用于控制旋转电容器7至14的放电的控制部分105，其中，一次连接到缓冲电容器15的旋转电容器7至14的数量被切换 响应于RF频率的调制频带的分数频带。 结果，可以改变采样率的抽取比，并且可以减少在AD转换中产生的量化噪声。
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