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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：US08385874B2
公开(公告)日：2013-02-26
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：US08380781B2
公开(公告)日：2013-02-19
申请号：US12172816
申请日：2008-07-14
IPC分类号： G06G7/02
CPC分类号： H03H15/023 , H03H2015/005 , H03H2015/007
摘要： There are provided a sampling filter that enables a filter characteristic to be adjusted flexibly, and a radio communication apparatus equipped with this sampling filter. A sampling filter apparatus (100) is equipped with four integration units (150-1 through 150-4) corresponding to the number of filter taps, and some of the integration units (150-1 through 150-4) include an integrator having an MEMS structure. By this means, a charge amount (accumulated charge amount) of a received signal integrated by an integrator can be adjusted by adjusting the capacity of an integrator having an MEMS structure. A received signal amount emitted from an integration unit can also be adjusted by adjustment of the integration amount of a received signal, enabling the filter characteristic of the sampling filter apparatus (100) to be adjusted flexibly.
摘要翻译： 提供了能够灵活调节滤波器特性的采样滤波器和配备有该采样滤波器的无线电通信装置。 采样滤波装置（100）装备有对应于滤波器抽头数量的四个积分单元（150-1至150-4），并且一些积分单元（150-1至150-4）包括积分器，其具有 MEMS结构。 通过这种方式，可以通过调整具有MEMS结构的积分器的容量来调整由积分器积分的接收信号的电荷量（累积电荷量）。 也可以通过调整接收信号的积分量来调整从积分单元发出的接收信号量，使得采样滤波器装置（100）的滤波特性能够灵活调节。
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公开(公告)号：US20090021296A1
公开(公告)日：2009-01-22
申请号：US12172816
申请日：2008-07-14
IPC分类号： H03K5/00
CPC分类号： H03H15/023 , H03H2015/005 , H03H2015/007
摘要： There are provided a sampling filter that enables a filter characteristic to be adjusted flexibly, and a radio communication apparatus equipped with this sampling filter. A sampling filter apparatus (100) is equipped with four integration units (150-1 through 150-4) corresponding to the number of filter taps, and some of the integration units (150-1 through 150-4) include an integrator having an MEMS structure. By this means, a charge amount (accumulated charge amount) of a received signal integrated by an integrator can be adjusted by adjusting the capacity of an integrator having an MEMS structure. A received signal amount emitted from an integration unit can also be adjusted by adjustment of the integration amount of a received signal, enabling the filter characteristic of the sampling filter apparatus (100) to be adjusted flexibly.
摘要翻译： 提供了能够灵活调节滤波器特性的采样滤波器和配备有该采样滤波器的无线电通信装置。 采样滤波装置（100）装备有对应于滤波器抽头数量的四个积分单元（150-1至150-4），并且一些积分单元（150-1至150-4）包括积分器，其具有 MEMS结构。 通过这种方式，可以通过调整具有MEMS结构的积分器的容量来调整由积分器积分的接收信号的电荷量（累积电荷量）。 也可以通过调整接收信号的积分量来调整从积分单元发出的接收信号量，使得采样滤波器装置（100）的滤波特性能够灵活调节。
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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：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：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：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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