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公开(公告)号：US08111741B2
公开(公告)日：2012-02-07
申请号：US12373860
申请日：2007-10-15
IPC分类号： H03H7/30
CPC分类号： H03H15/00 , G11C27/024 , H03H19/00
摘要： The present invention has an object to provide a sampling filter apparatus and a wireless communication apparatus, which are capable of changing a filter characteristic without employing complex waveforms as control signals, and also, capable of performing filtering process operations without performing a decimation, while utilizing a wide frequency space. A sampling filter apparatus 100 includes a controller 140, a plurality of integrators 150 to 154, a plurality of switches 130, 160 to 164, 170 to 174, 180 to 184, and a plurality of voltage/current converters 120 to 123. An inputted current is stored in four pieces of integrators selected among the plurality of integrators 150 to 154 by one clock, and electric charges which have been stored from four preceding clocks up to one preceding clock are added to each other so as to output the added electric charges from the remaining one integrator. When electric charges are stored in the integrators 150 to 154 in each clock, since the inputted current is switched, the electric charges to be outputted can be weighted, and thus, a filter characteristic is changed.
摘要翻译： 本发明的目的是提供一种采样滤波器装置和无线通信装置，其能够在不使用复杂波形作为控制信号的情况下改变滤波器特性，并且还可以在不执行抽取的情况下执行滤波处理操作，同时利用 宽频率空间。 采样滤波器装置100包括控制器140，多个积分器150至154，多个开关130,160至164,170至174,180至184以及多个电压/电流转换器120至123.输入 将电流存储在多个积分器150至154中选择的四个积分器中一个时钟，并且从四个先前时钟直到一个先前时钟存储的电荷彼此相加，以便输出相加的电荷 从剩下的一个积分器。 当在每个时钟中积分器150至154中存储电荷时，由于输入的电流被切换，所以要输出的电荷可被加权，从而改变滤波器特性。
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公开(公告)号：US20090257531A1
公开(公告)日：2009-10-15
申请号：US12373860
申请日：2007-10-15
CPC分类号： H03H15/00 , G11C27/024 , H03H19/00
摘要： The present invention has an object to provide a sampling filter apparatus and a wireless communication apparatus, which are capable of changing a filter characteristic without employing complex waveforms as control signals, and also, capable of performing filtering process operations without performing a decimation, while utilizing a wide frequency space. A sampling filter apparatus 100 includes a controller 140, a plurality of integrators 150 to 154, a plurality of switches 130, 160 to 164, 170 to 174, 180 to 184, and a plurality of voltage/current converters 120 to 123. An inputted current is stored in four pieces of integrators selected among the plurality of integrators 150 to 154 by one clock, and electric charges which have been stored from four preceding clocks up to one preceding clock are added to each other so as to output the added electric charges from the remaining one integrator. When electric charges are stored in the integrators 150 to 154 in each clock, since the inputted current is switched, the electric charges to be outputted can be weighted, and thus, a filter characteristic is changed.
摘要翻译： 本发明的目的是提供一种采样滤波器装置和无线通信装置，其能够在不使用复杂波形作为控制信号的情况下改变滤波器特性，并且还可以在不执行抽取的情况下执行滤波处理操作，同时利用 宽频率空间。 采样滤波器装置100包括控制器140，多个积分器150至154，多个开关130,160至164,170至174,180至184以及多个电压/电流转换器120至123.输入 将电流存储在多个积分器150至154中选择的四个积分器中一个时钟，并且从四个先前时钟直到一个先前时钟存储的电荷彼此相加，以便输出相加的电荷 从剩下的一个积分器。 当在每个时钟中积分器150至154中存储电荷时，由于输入的电流被切换，所以要输出的电荷可被加权，从而改变滤波器特性。
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公开(公告)号：US08179185B2
公开(公告)日：2012-05-15
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：US08164380B2
公开(公告)日：2012-04-24
申请号：US12667370
申请日：2008-07-03
IPC分类号： H03K5/00
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：US08145175B2
公开(公告)日：2012-03-27
申请号：US12680326
申请日：2008-09-25
IPC分类号： H04B1/10
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：US08711917B2
公开(公告)日：2014-04-29
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：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：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：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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