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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：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：US20080299937A1
公开(公告)日：2008-12-04
申请号：US12097109
申请日：2006-12-12
IPC分类号： H04B1/16
CPC分类号： H03H15/023 , G11C27/024 , H03H2015/007
摘要： The present invention aims at providing a sampling filter capable of changing a filtering characteristic without use of a complicate waveform as a control signal. A sampling filter 100 has a control section 140, a plurality of integrators, and a plurality of switches. An input current is accumulated in a plurality of capacitors in one clock; adds up electric charges accumulated in the integrators in several preceding clocks to one preceding clock; and outputs a result of addition. When electric charges are accumulated in the integrators in each clock, output electric charges can be subjected to, while being weighted, addition by switching an electric current to be input, so that the filtering characteristic is changed.
摘要翻译： 本发明旨在提供一种能够改变滤波特性而不使用复杂波形作为控制信号的采样滤波器。 采样滤波器100具有控制部分140，多个积分器和多个开关。 在一个时钟内在多个电容器中累积输入电流; 将在前面的几个时钟中的积分器中积累的电荷加到一个前一时钟; 并输出相加结果。 当在每个时钟中的积分器中积累电荷时，可以通过切换要输入的电流来加权输出电荷，从而改变滤波特性。
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公开(公告)号：US07979047B2
公开(公告)日：2011-07-12
申请号：US12097109
申请日：2006-12-12
CPC分类号： H03H15/023 , G11C27/024 , H03H2015/007
摘要： The present invention aims at providing a sampling filter capable of changing a filtering characteristic without use of a complicate waveform as a control signal. A sampling filter 100 has a control section 140, a plurality of integrators, and a plurality of switches. An input current is accumulated in a plurality of capacitors in one clock; adds up electric charges accumulated in the integrators in several preceding clocks to one preceding clock; and outputs a result of addition. When electric charges are accumulated in the integrators in each clock, output electric charges can be subjected to, while being weighted, addition by switching an electric current to be input, so that the filtering characteristic is changed.
摘要翻译： 本发明旨在提供一种能够改变滤波特性而不使用复杂波形作为控制信号的采样滤波器。 采样滤波器100具有控制部分140，多个积分器和多个开关。 在一个时钟内在多个电容器中累积输入电流; 将在前面的几个时钟中的积分器中积累的电荷加到一个前一时钟; 并输出相加结果。 当在每个时钟中的积分器中积累电荷时，可以通过切换要输入的电流来加权输出电荷，从而改变滤波特性。
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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：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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