公开(公告)号：US07983644B2

公开(公告)日：2011-07-19

申请号：US12724150

申请日：2010-03-15

申请人： Donald G. McMullin ,  Ramon A. Gomez ,  Lawrence M. Burns ,  Myles Wakayama

发明人： Donald G. McMullin ,  Ramon A. Gomez ,  Lawrence M. Burns ,  Myles Wakayama

IPC分类号： H04B1/06

CPC分类号： H04B1/28

摘要： An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the mixer mixes an RF input signal with a first local oscillator (LO) signal to frequency translate a selected channel in the RF input signal into the passband of the filter. During a calibration mode, the RF input signal is disabled, and the first LO signal is injected into the filter input by leaking the first LO signal through the mixer circuit. The frequency of the LO signal is then swept over a frequency bandwidth that is sufficiently wide so that the actual passband is detected by measuring the signal amplitude at the output of the bandpass filter, thereby determining any variation in the passband of the filter from the expected passband. Once the actual passband is determined, then the frequency of the first local oscillator signal is adjusted or tuned to compensate for any frequency shift of the actual passband compared to the expected passband. Therefore, the selected channel is up-converted into the center of the actual passband of the bandpass filter and will not fall outside the passband. This enables the passband of the bandpass filter to be narrowed, as compared with conventional receivers that do not utilize this calibration procedure. For example, the bandpass filter can be narrowed to one or two channels wide.

摘要翻译： 用于本地振荡器校准的装置和方法补偿诸如接收机电路的混频器电路中的滤波器通带变化。 接收器至少包括混频器电路和耦合到混频器输出端的滤波器。 在操作期间，混频器将RF输入信号与第一本地振荡器（LO）信号混频，以将RF输入信号中的选定信道频率转换成滤波器的通带。 在校准模式期间，RF输入信号被禁止，并且通过将第一LO信号泄漏通过混频器电路将第一LO信号注入滤波器输入。 然后将LO信号的频率扫过足够宽的频带宽度，以便通过测量带通滤波器输出端的信号振幅来检测实际通带，从而根据预期的方式确定滤波器通带的任何变化 通带。 一旦确定了实际通带，则调整或调谐第一本地振荡器信号的频率，以补偿与预期通带相比实际通带的任何频移。 因此，所选通道被上变频为带通滤波器的实际通带的中心，不会落在通带外。 与使用该校准程序的常规接收器相比，这使带通滤波器的通带变窄。 例如，带通滤波器可以变窄到一个或两个通道宽。

公开(公告)号：US07791412B2

公开(公告)日：2010-09-07

申请号：US12073686

申请日：2008-03-07

申请人： Leonard Dauphinee ,  Lawrence M. Burns

发明人： Leonard Dauphinee ,  Lawrence M. Burns

IPC分类号： H03G3/20

CPC分类号： H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L2924/0002 ,  H03F3/211 ,  H03G3/3036 ,  H03G3/3052 ,  H03G2201/307 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

摘要： A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

摘要翻译： 可变增益放大器（VGA）根据增益放大输入信号，以产生放大信号。 检测器模块检测指示放大信号的功率的功率。 比较器模块将检测到的功率与高阈值和低阈值中间的高阈值，低阈值和目标阈值进行比较。 当比较器模块指示检测到的功率不在高阈值和低阈值之间时，控制器模块改变VGA的增益以驱动检测到的功率朝向中间阈值的方向。

公开(公告)号：US07783275B2

公开(公告)日：2010-08-24

申请号：US11580228

申请日：2006-10-13

申请人： Myles Wakayama ,  Dana Vincent Laub ,  Frank Carr ,  Afshin Mellati ,  David S. P. Ho ,  Hsiang-Bin Lee ,  Chun-Ying Chen ,  James Y. C. Chang ,  Lawrence M. Burns ,  Young Joon Shin ,  Patrick Pai ,  Iconomos A. Koullias ,  Ron Lipka ,  Luke Thomas Steigerwald ,  Alexandre Kral

发明人： Myles Wakayama ,  Dana Vincent Laub ,  Frank Carr ,  Afshin Mellati ,  David S. P. Ho ,  Hsiang-Bin Lee ,  Chun-Ying Chen ,  James Y. C. Chang ,  Lawrence M. Burns ,  Young Joon Shin ,  Patrick Pai ,  Iconomos A. Koullias ,  Ron Lipka ,  Luke Thomas Steigerwald ,  Alexandre Kral

IPC分类号： H04B1/28

CPC分类号： H03H11/04 ,  H03D3/008 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/165 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0047 ,  H04B1/30

摘要： A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel directly to baseband for further processing. The integrated tuner includes on-chip local oscillator generation, tunable baseband filters, and DC Offset cancellation. The integrated tuner can be implemented in a completely differential I/Q configuration for improved electrical performance. The entire direct conversion satellite tuner can be fabricated on a single semiconductor substrate using standard CMOS processing, with minimal off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.

摘要翻译： 直接转换卫星调谐器完全集成在公共基板上。 集成调谐器接收具有多个信道的RF信号，并将所选择的信道直接下变频到基带用于进一步处理。 集成调谐器包括片上本地振荡器产生，可调谐基带滤波器和DC偏移消除。 集成调谐器可以以完全差分的I / Q配置来实现，以改善电气性能。 整个直接转换卫星调谐器可以使用标准CMOS处理在单个半导体衬底上制造，具有最小的片外部件。 这里描述的调谐器配置不限于处理TV信号，并且可以用于将其它RF信号下变频到IF频率或基带。

公开(公告)号：US20090273401A1

公开(公告)日：2009-11-05

申请号：US12503232

申请日：2009-07-15

申请人： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

发明人： Adel Fanous ,  Leonard Dauphinee ,  Lawrence M. Burns ,  Donald McMullin

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45201 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45302 ,  H03F2203/45311 ,  H03F2203/45464 ,  H03F2203/45466 ,  H03F2203/45638 ,  H03F2203/45696 ,  H03G1/0029 ,  H03G3/3036 ,  H03G3/3052

摘要： An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide first stage amplification to a received input signal and produce from the amplified input signal a number of output signals, each substantially matching the input signal. Also included is a first gain control device having a number of gain input ports respectively coupled to the first output ports and a gain output port coupled to at least one of the first input ports. The first gain control device is configured to control a gain of the first amplification module. Next, a number of second amplification modules corresponding to the number of output signals has a number of second input ports respectively coupled to the first output ports. Each second amplification module is configured to receive a control signal from the second gain control device, provide second stage amplification to a corresponding one of the number of output signals based upon the control signal and produce an amplified output signal.

摘要翻译： 主动分路器电路装置包括具有多个第一输入端口和第一输出端口的第一放大模块。 第一放大模块被配置为向接收到的输入信号提供第一级放大，并且从放大的输入信号产生多个输出信号，每个输出信号基本上匹配输入信号。 还包括具有分别耦合到第一输出端口的多个增益输入端口和耦合到至少一个第一输入端口的增益输出端口的第一增益控制装置。 第一增益控制装置被配置为控制第一放大模块的增益。 接下来，对应于输出信号数量的多个第二放大模块具有分别耦合到第一输出端口的多个第二输入端口。 每个第二放大模块被配置为从第二增益控制装置接收控制信号，基于控制信号向输出信号的数量对应的一个提供第二级放大，并产生放大的输出信号。

公开(公告)号：US07309998B2

公开(公告)日：2007-12-18

申请号：US10440311

申请日：2003-05-19

申请人： Lawrence M. Burns ,  Leonard Dauphinee ,  Ramon A. Gomez ,  James Y. C. Chang

发明人： Lawrence M. Burns ,  Leonard Dauphinee ,  Ramon A. Gomez ,  James Y. C. Chang

IPC分类号： G01R31/02

CPC分类号： H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H03F3/211 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102

摘要： A system or apparatus for monitoring an Integrated Circuit (IC) chip, comprises: a sense circuit at least partially constructed on the IC chip and configured to produce one or more sense signals each indicative of a corresponding process-dependent circuit parameter of the IC chip; and a digitizer module configured to produce, responsive to the one or more sense signals, one or more digitized signals each representative of a corresponding one of the sense signals. A controller is configured to determine a value of one or more of the process-dependent circuit parameters based on one or more of the digitized signals.

摘要翻译： 一种用于监视集成电路（IC）芯片的系统或装置，包括：感测电路，其至少部分地构造在所述IC芯片上并且被配置为产生一个或多个感测信号，每个感测信号指示所述IC芯片的相应的与处理有关的电路参数 ; 以及数字转换器模块，被配置为响应于所述一个或多个感测信号产生一个或多个数字化信号，每一个表示所述感测信号中相应的一个感测信号。 控制器被配置为基于一个或多个数字化信号来确定一个或多个处理相关电路参数的值。

公开(公告)号：US07260377B2

公开(公告)日：2007-08-21

申请号：US11030882

申请日：2005-01-10

申请人： Lawrence M. Burns ,  Charles Brooks ,  Leonard Dauphinee

发明人： Lawrence M. Burns ,  Charles Brooks ,  Leonard Dauphinee

IPC分类号： H04B1/16

CPC分类号： H03F1/26 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L22/20 ,  H01L2924/0002 ,  H03F3/189 ,  H03F3/211 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/3036 ,  H04B1/109 ,  H04B1/18 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

摘要： A multi-stage amplifier assembly configured to receive a terrestrial digital television (“DTV”) input signal including multiple frequency channels. The amplifier assembly optionally includes a PIN diode coupled across differential inputs to a first stage of the multi-stage amplifier assembly. The PIN diode is controlled to attenuate the input when an exceptionally large signal is present in a channel adjacent to a desired channel. The PIN diode, essentially a variable resistor, permits the multi-stage amplifier assembly to maintain dynamic range in such situations for reasonable tradeoffs. The amplifier assembly further optionally includes an out-of-band second stage LNA. The amplifier assembly further optionally includes a multi-band input filter. The multi-band filer insures that the AGC operates on the TV band of interest, thus improving the linearity of the system. The invention can be implemented in CMOS and/or SiGe.

摘要翻译： 多级放大器组件，被配置为接收包括多个频率信道的地面数字电视（“DTV”）输入信号。 放大器组件可选地包括耦合在差分输入端到多级放大器组件的第一级的PIN二极管。 控制PIN二极管以在与所需通道相邻的通道中存在非常大的信号时衰减输入。 PIN二极管（基本上是可变电阻器）允许多级放大器组件在这种情况下保持动态范围以进行合理的折衷。 放大器组件还可选地包括带外第二级LNA。 放大器组件还可选地包括多频带输入滤波器。 多频带滤波器确保AGC在感兴趣的TV频带上运行，从而提高系统的线性度。 本发明可以在CMOS和/或SiGe中实现。

公开(公告)号：US07215218B2

公开(公告)日：2007-05-08

申请号：US10984771

申请日：2004-11-10

申请人： Lawrence M. Burns ,  Carl W. Pobanz

发明人： Lawrence M. Burns ,  Carl W. Pobanz

IPC分类号： H01P5/10

CPC分类号： H05K1/0239 ,  H01P5/10 ,  H05K2201/10015

摘要： The invention is a balun transformer that converts a single-ended (or unbalanced) signal to a differential (or balanced) signal. The balun is a printed metal pattern on a circuit board in conjunction with several low cost chip capacitors and a low cost chip inductor. The balun transformer is a modified Marchand balun that is implemented using printed transmission lines. The balun has a plurality of coupled transmission lines to improve tolerances to variations in PC board fabrication. To make the balun compact, it is electrically lengthened through the use of capacitive loading, which reduces the required physical size. Additionally, the capacitors increase the bandwidth due to the resonant interaction between the short inductive balun and the capacitors that are placed in series with the input and the output.

摘要翻译： 本发明是将单端（或不平衡）信号转换为差分（或平衡）信号的平衡 - 不平衡变压器。 平衡 - 不平衡转换器是电路板上的印刷金属图案，结合几个低成本芯片电容器和低成本芯片电感器。 平衡 - 不平衡变压器是采用印刷传输线实现的经修改的Marchand平衡 - 不平衡变压器。 平衡 - 不平衡转换器具有多个耦合传输线，以改善对PC板制造变化的公差。 为了使平衡 - 不平衡变压器紧凑，通过使用电容负载来电延长，这减少了所需的物理尺寸。 此外，由于短路感应平衡 - 不平衡变压器和与输入和输出串联放置的电容器之间的谐振相互作用，电容器增加了带宽。

公开(公告)号：US07190219B2

公开(公告)日：2007-03-13

申请号：US10759426

申请日：2004-01-20

申请人： Lawrence M Burns ,  Leonard Dauphinee

发明人： Lawrence M Burns ,  Leonard Dauphinee

IPC分类号： H03G3/20

CPC分类号： H03G3/3068 ,  G05F3/242 ,  H03F3/211 ,  H03F3/72 ,  H03F2203/21191 ,  H03F2203/7227 ,  H03G3/001 ,  H03G3/3042

摘要： An extended range variable gain amplifier is described. The variable gain capability is achieved by replacing differential pair amplifiers having an input signal with less attenuation with one having an input signal that is more attenuated. This replacement continues until only ten differential pair amplifiers are remaining. At this point, if less gain is desired, differential pair amplifiers are turned off, but are not replaced. A minimum number of amplifiers will remain on.

摘要翻译： 描述了扩展范围可变增益放大器。 可变增益能力通过用具有更多衰减的输入信号替换具有较小衰减的输入信号的差分对放大器来实现。 该替换继续，直到仅剩下十个差分对放大器。 此时，如果需要较小的增益，则差分对放大器被关闭，但不被替换。 最少数量的放大器将保持开启状态。

公开(公告)号：US07071798B2

公开(公告)日：2006-07-04

申请号：US10994633

申请日：2004-11-23

申请人： Ramon A. Gomez ,  Lawrence M. Burns ,  Sung-Hsien Chang ,  Carl W. Pobanz

发明人： Ramon A. Gomez ,  Lawrence M. Burns ,  Sung-Hsien Chang ,  Carl W. Pobanz

IPC分类号： H01P7/00 ,  H01P1/20

CPC分类号： H01P7/00 ,  H01P1/20 ,  H01P1/203 ,  H01P1/20381 ,  H05K1/165

摘要： A printed bandpass filter is mounted on a precision substrate to eliminate the need for post-fabrication tuning. The filter input is capacitively coupled to a series of quarter wavelength resonators and the filter output. The quarter wavelength resonators are printed as spirals to reduce filter size. The resonators define the bandpass characteristics of the filter. The filter also weakly couples the input signal to the filter output in a manner to cancel the signal image. Mechanical clips mitigate thermal stress on solder connections when the precision substrate is mounted on a second printed circuit board.

公开(公告)号：US06847282B2

公开(公告)日：2005-01-25

申请号：US09981993

申请日：2001-10-19

申请人： Ramon A. Gomez ,  Lawrence M. Burns

发明人： Ramon A. Gomez ,  Lawrence M. Burns

IPC分类号： H01F17/00 ,  H01F27/36 ,  H01F5/00

CPC分类号： H01F17/0013 ,  H01F27/362

摘要： A multiple layer inductor has a first spiral conductive pattern disposed on a first surface; a second spiral conductive pattern disposed on a second surface; a continuing interconnection coupled to the first and second spiral conductive patterns; an interface coupled to the first and second spiral conductive patterns; and a conductive shield pattern disposed on a third surface that is adjacent to the second surface. The interface includes a first terminal disposed on the first surface that is coupled to the first spiral conductive pattern. The interface also includes a second terminal that is disposed on the first surface and coupled to said second spiral conductive pattern.