公开(公告)号：US08405152B2

公开(公告)日：2013-03-26

申请号：US13268386

申请日：2011-10-07

申请人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

发明人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

IPC分类号： H01L29/72

CPC分类号： H03J3/08 ,  H01L27/0251 ,  H03D1/22 ,  H03G1/0005 ,  H03H11/1291 ,  H03J2200/10 ,  H03J2200/18 ,  H03K17/164 ,  H03K2217/96015 ,  H03L7/095 ,  H03L7/18

摘要： An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programmable attenuation and a programmable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator. The VCOs in the PLLs are centered using a control circuit to center the tuning capacitance range.

摘要翻译： 描述了基本上在单个CMOS集成电路上实现的具有信道选择和图像抑制的集成接收机。 接收机前端提供可编程衰减和可编程增益低噪声放大器。 频率转换电路有利地使用集成到衬底上的LC滤波器与图像抑制混合器结合，以提供足够的图像频率抑制。 过滤器调谐和电感Q补偿温度在芯片上执行。 使用本地振荡器调整滤波器以调整替代滤波器，以及滤波器组件值期间的频率缩放与被调谐的滤波器的频率缩放。 结合滤波，频率规划提供了额外的镜像抑制。 片上本地振荡器信号产生方法的有利选择是通过PLL带外本地振荡和通过频带本地振荡器的直接合成。 PLL中的VCO使用控制电路居中，使调谐电容范围居中。

公开(公告)号：US20070167143A1

公开(公告)日：2007-07-19

申请号：US10588109

申请日：2006-01-23

申请人： Eiji Okada ,  Hiroaki Ozeki

发明人： Eiji Okada ,  Hiroaki Ozeki

IPC分类号： H04B1/06

CPC分类号： H03J3/08 ,  H03J2200/18 ,  H03L7/0805 ,  H03L7/0812

摘要： A receiver and an electronic device are provided that suppress deterioration of the signal waveform of a symbol. The receiver has filter (12) that sends out an output signal having a symbol at an arbitrary time interval; and intermittent operation part (13) that controls filter (12) intermittently at an arbitrary time interval, according to an output signal supplied from filter (12). The makeup prevents deterioration of the signal waveform of a symbol, by setting the timing for switching the signal for controlling the frequency characteristic of filter (12), to an arbitrary period between symbol periods such as a guard interval.

摘要翻译： 提供一种接收器和电子设备，其抑制符号的信号波形的劣化。 接收器具有滤波器（12），其以任意时间间隔发出具有符号的输出信号; 以及根据从过滤器（12）提供的输出信号以任意的时间间隔间歇地控制过滤器（12）的间歇操作部（13）。 通过将用于控制滤波器（12）的频率特性的信号切换的定时设定为保护间隔等符号周期之间的任意周期，可以防止符号的信号波形的劣化。

公开(公告)号：US20070008046A1

公开(公告)日：2007-01-11

申请号：US11176034

申请日：2005-07-07

申请人： Nihal Godambe

发明人： Nihal Godambe

IPC分类号： H03B5/20

CPC分类号： H03J1/0008 ,  H03H11/1291 ,  H03H2210/021 ,  H03H2210/043 ,  H03J2200/03 ,  H03J2200/18

摘要： An apparatus and method are provided for tracking the poles of an integrated RC filter as well as the absolute value of a current source. A single tracking oscillator contains integrated elements such as a programmable resistor and fixed capacitor or a programmable capacitor and fixed resistor. The programmable element is programmed such that a particular response from the RC filter is achieved and the word used to program the programmable element is then supplied to other integrated RC filters having components that were fabricated at the same time as the RC filter in the tracking oscillator. A highly accurate external capacitor or resistor is supplied to determinate the absolute value of the programming element, which is used to program one or more current sources containing the programmable resistor.

摘要翻译： 提供了用于跟踪集成RC滤波器的极点以及电流源的绝对值的装置和方法。 单个跟踪振荡器包含集成元件，例如可编程电阻器和固定电容器，或可编程电容器和固定电阻器。 可编程元件被编程为使得来自RC滤波器的特定响应被实现，并且用于编程可编程元件的字随后被提供给具有与跟踪振荡器中的RC滤波器同时制造的分量的其它集成RC滤波器 。 提供高精度的外部电容器或电阻来确定编程元件的绝对值，该绝对值用于对包含可编程电阻器的一个或多个电流源进行编程。

公开(公告)号：US20050253633A1

公开(公告)日：2005-11-17

申请号：US11126294

申请日：2005-05-11

申请人： Katsuji Kimura

发明人： Katsuji Kimura

IPC分类号： H03H11/04 ,  H03H11/12 ,  H03L7/06 ,  H03L7/081 ,  H03L7/085 ,  H03L7/093

CPC分类号： H03L7/0812 ,  H03H11/1291 ,  H03J2200/18 ,  H03L7/0805

摘要： Disclosed is a PLL circuit in which an AC signal with a predetermined frequency is supplied as an input signal to a phase shifter comprising an OTA and a capacitor, and a phase comparator that receives the input signal to the phase shifter and an output signal from the phase shifter outputs a signal corresponding to a phase difference between the input signals. Control is performed so that the phase difference given by the phase shifter becomes a constant value by changing a transconductance (gm) of at the OTA constituting the phase shifter, using an output voltage of an amplifier for amplifying a DC voltage of the output signal of the phase comparator as a control signal.

摘要翻译： 公开了一种PLL电路，其中具有预定频率的AC信号作为输入信号被提供给包括OTA和电容器的移相器，以及相位比较器，其将相对于移相器的输入信号和 移相器输出与输入信号之间的相位差对应的信号。 执行控制，使得由移相器给出的相位差通过使用用于放大输出信号的直流电压的放大器的输出电压来改变构成移相器的OTA的跨导（gm）而变为恒定值 相位比较器作为控制信号。

公开(公告)号：US06307442B1

公开(公告)日：2001-10-23

申请号：US09312924

申请日：1999-05-17

申请人： Robert G. Meyer ,  Madhu Avasarala

发明人： Robert G. Meyer ,  Madhu Avasarala

IPC分类号： H03H1110

CPC分类号： H03H7/1775 ,  H03H7/06 ,  H03H7/12 ,  H03J2200/08 ,  H03J2200/18

摘要： A tunable electronic filter circuit is provided including an input terminal and an output terminal connected to the input terminal with a node therebetween. An inductor, a variable capacitor, and a variable resistor are connected between the node and ground. Coupled to the variable capacitor and the variable resistor is a feedback control circuit. The feedback control circuit is operable to tune the variable capacitor in order to set a predetermined frequency, or center frequency, of the electronic filter circuit. The feedback control circuit is further operable to tune the variable resistor in order to calibrate a quality factor of the electronic filter circuit. In use when an input signal is applied to the input terminal, the electronic filter circuit passes an output signal to the output terminal. Such output signal includes components of the input signal within a predetermined frequency bandwidth set by the predetermined frequency and filters out other components of the input signal. As an option, a “slave” tunable electronic filter circuit may be providing including a variable capacitor and a variable resistor which are also controlled by the feedback circuit. This allows the “slave” filter to be tuned while being used.

摘要翻译： 提供了一种可调谐电子滤波器电路，其包括输入端子和连接到输入端子的输出端子，其间具有节点。 节点和地之间连接有电感，可变电容和可变电阻。 耦合到可变电容器和可变电阻器是反馈控制电路。 反馈控制电路可操作以调谐可变电容器，以便设置电子滤波器电路的预定频率或中心频率。 反馈控制电路还可操作以调谐可变电阻器，以便校准电子滤波器电路的品质因数。 在输入信号被施加到输入端子时使用时，电子滤波器电路将输出信号传递到输出端子。 这种输出信号包括在由预定频率设置的预定频带内的输入信号的分量，并滤除输入信号的其他分量。 作为选择，可以提供“从”）可调谐电子滤波器电路，其包括也由反馈电路控制的可变电容器和可变电阻器。 这允许在使用“从”（Filter）过滤器时进行调整。

公开(公告)号：US08150351B2

公开(公告)日：2012-04-03

申请号：US12297175

申请日：2007-04-16

申请人： Peter Shah ,  Bert Fransis ,  Keith Bargroff

发明人： Peter Shah ,  Bert Fransis ,  Keith Bargroff

IPC分类号： H03J3/08

CPC分类号： H03J3/08 ,  H03J2200/08 ,  H03J2200/18

摘要： A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in-package (SIP) with other critical tuner components, which produces a highly integrated tuner front end with high Q filters within a single package. High voltage varactors with a large tuning range can be used for variable capacitors. The integration of the tuner into a SIP allows the tuner design to be optimized for cost and performance while keeping the critical RF layout requirements within the tuner. A configurable tuner front end enables modes for low noise, high linearity, good input return loss (S11) across the entire RF band, and applying a test tone in the calibration mode. The switchable mode enables the tuner to be effective during weak terrestrial reception, strong terrestrial reception, and connection to a cable plant.

摘要翻译： 宽带调谐器包括具有校准以补偿组件误差和漂移的跟踪滤波器。 滤波器使用优选地在具有其他关键调谐器组件的系统级封装（SIP）内的片外电感器，其在单个封装内产生具有高Q滤波器的高度集成的调谐器前端。 具有较大调谐范围的高压变容二极管可用于可变电容器。 将调谐器集成到SIP中可以使调谐器设计针对成本和性能进行优化，同时保持调谐器内的关键RF布局要求。 可配置的调谐器前端可以实现整个RF频段的低噪声，高线性度，良好的输入回波损耗（S11），以及在校准模式下应用测试音调的模式。 可切换模式使得调谐器在弱地面接收，强大的地面接收和与电缆厂的连接方面是有效的。

公开(公告)号：US07945218B1

公开(公告)日：2011-05-17

申请号：US11515216

申请日：2006-09-01

申请人： Ajay Kumar

发明人： Ajay Kumar

IPC分类号： H04B1/40 ,  H04K3/00

CPC分类号： H03L7/0812 ,  H03J2200/18 ,  H03L7/089 ,  H03L7/0891

摘要： A method for tuning quality factor (Q) in a high-Q, high-frequency filter is provided that includes filtering an input signal to generate a filtered signal. The input signal comprises a specified frequency. The filtered signal comprises an actual phase shift with respect to the input signal. The actual phase shift is compared to a desired phase shift for the filtered signal to determine a difference between the actual phase shift and the desired phase shift. The desired phase shift corresponds to the specified frequency. The filter is tuned based on the difference between the actual phase shift and the desired phase shift.

摘要翻译： 提供了一种用于调整高Q，高频滤波器中的质量因子（Q）的方法，其包括对输入信号进行滤波以产生滤波信号。 输入信号包括指定的频率。 经滤波的信号包括相对于输入信号的实际相移。 将实际相移与滤波信号的期望相移进行比较，以确定实际相移与期望相移之间的差异。 所需的相移对应于指定的频率。 基于实际相移与期望相移之间的差异来调节滤波器。

公开(公告)号：US20090128259A1

公开(公告)日：2009-05-21

申请号：US12097013

申请日：2006-07-12

申请人： Kazuhisa Ishiguro

发明人： Kazuhisa Ishiguro

IPC分类号： H03H7/00

CPC分类号： H03F3/45475 ,  H03F2200/453 ,  H03F2203/45138 ,  H03H11/1291 ,  H03J2200/18

摘要： A second operational amplifier (7) is arranged, as an interface circuit (6), between a first operational amplifier (5) outputting the control voltage (Vcd) of a dummy filter (2) and a main filter (1), and the reference voltage (Vr) of the second operational amplifier (7) is optimized such that the control voltage (Vcd) obtained by using the dummy filter (2) is converted through the interface circuit (6) into a control voltage (Vcm) most suitable for the main filter (1), thereby obtaining a control voltage (Vcm) most suitable for regulating the frequency characteristics of the main filter (1) to desired characteristics.

摘要翻译： 第二运算放大器（7）作为接口电路（6）布置在输出虚拟滤波器（2）的控制电压（Vcd）的第一运算放大器（5）和主滤波器（1）之间， 第二运算放大器（7）的参考电压（Vr）被优化，使得通过使用虚拟滤波器（2）获得的控制电压（Vcd）通过接口电路（6）转换成最合适的控制电压（Vcm） 对于主过滤器（1），从而获得最适合于将主过滤器（1）的频率特性调节到期望特性的控制电压（Vcm）。

公开(公告)号：US20080174925A1

公开(公告)日：2008-07-24

申请号：US12003929

申请日：2008-01-03

申请人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

发明人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

IPC分类号： H02H9/00

CPC分类号： H01L27/0251 ,  H03D1/22 ,  H03G1/0005 ,  H03H11/1291 ,  H03J3/08 ,  H03J2200/10 ,  H03J2200/18 ,  H03K17/164 ,  H03K2217/96015 ,  H03L7/095 ,  H03L7/18

摘要： An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programmable attenuation and a programmable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters utilize multi track spiral inductors. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator. The VCOs in the PLLs are centered using a control circuit to center the tuning capacitance range. A differential crystal oscillator is advantageously used as a frequency reference. Differential signal transmission is advantageously used throughout the receiver. ESD protection is provided by a pad ring and ESD clamping structure that maintains signal integrity. Also provided are shunts at each pin to discharge ESD build up. The shunts utilize a gate boosting structure to provide sufficient small signal RF performance, and minimal parasitic loading.

公开(公告)号：US07403063B2

公开(公告)日：2008-07-22

申请号：US11554035

申请日：2006-10-30

申请人： Wei-Hsuan Tu ,  Tse-Hsiang Hsu

发明人： Wei-Hsuan Tu ,  Tse-Hsiang Hsu

IPC分类号： G06G7/12 ,  H01L31/00 ,  H03B5/04 ,  H03F3/45 ,  H03L1/02 ,  H03L7/06 ,  H04B1/10

CPC分类号： H03H11/0472 ,  H03H11/0433 ,  H03H11/0444 ,  H03H2210/012 ,  H03H2210/023 ,  H03H2210/04 ,  H03J2200/08 ,  H03J2200/18 ,  H03J2200/33 ,  H03L7/0805 ,  H03L7/093

摘要： A tuning method and a tuning apparatus for tuning a filter are disclosed. The tuning method includes: configuring the filter as a VCO; utilizing the VCO to generate an oscillation signal according to a driving signal; comparing a frequency of the oscillation signal with a reference frequency to generate a comparison result; converting the comparison result into the driving signal in order to establish a feedback mechanism. Therefore, the inner components such as the gm and capacitance inside the VCO are completely tuned when the VCO generates an oscillation signal having a wanted frequency. Since the VCO is inside the filter and the components of the filter and the VCO are similar, the driving signal can be utilized to make the filter operate in a desired center frequency under a well-designed relationship between the frequency of the oscillation signal and the center frequency.

摘要翻译： 公开了一种用于调谐滤波器的调谐方法和调谐装置。 调谐方法包括：将滤波器配置为VCO; 利用VCO根据驱动信号产生振荡信号; 将振荡信号的频率与参考频率进行比较以产生比较结果; 将比较结果转换为驱动信号以建立反馈机制。 因此，当VCO产生具有所需频率的振荡信号时，内部组件例如gm和VCO内部的电容被完全调谐。 由于VCO位于滤波器内部并且滤波器和VCO的组件相似，所以可以利用驱动信号使滤波器在所需的中心频率下以在振荡信号的频率和 中心频率。