公开(公告)号：US08655299B2

公开(公告)日：2014-02-18

申请号：US13076183

申请日：2011-03-30

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H03F1/083 ,  H03F3/45179 ,  H04B1/006 ,  H04B1/1638 ,  H04B1/28 ,  H04B1/401

摘要： A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a frequency translated bandpass filter (FTBPF), an LNA, and a mixing section. The FTBPF includes a switching network and a plurality of baseband impedances. The switching network is operable to couple the plurality of baseband impedances to the FEM interface in accordance with a plurality of phase-offset RF clock signals to RF bandpass filter the inbound RF signal. The LNA amplifies the filtered inbound RF signal and the mixing section mixes the amplified inbound RF signal with a local oscillation to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.

摘要翻译： 无SAW接收机包括FEM接口模块，RF至IF接收机部分和接收机IF到基带部分。 RF至IF接收器部分包括频率转换带通滤波器（FTBPF），LNA和混频部分。 FTBPF包括交换网络和多个基带阻抗。 交换网络可操作以根据多个相位偏移RF时钟信号将多个基带阻抗耦合到FEM接口，以对入站RF信号进行RF带通滤波。 LNA放大滤波的入站RF信号，混合部分将放大的入站RF信号与本地振荡混频，以产生入站IF信号。 接收机IF到基带部分将入站IF信号转换成一个或多个入站符号流。

公开(公告)号：US08515368B2

公开(公告)日：2013-08-20

申请号：US11947269

申请日：2007-11-29

申请人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

IPC分类号： H04B1/04

CPC分类号： H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

摘要： An apparatus comprising: a baseband filter configured to produce a baseband signal utilizing an input signal; a mixer unit configured to produce an intermediate signal utilizing the baseband signal and a local oscillator signal; and a dynamically configurable transformer configured to provide a gain to the intermediate signal, wherein the gain is dynamically configurable.

摘要翻译： 一种装置，包括：基带滤波器，被配置为利用输入信号产生基带信号; 混频器单元，被配置为使用所述基带信号和本地振荡器信号产生中间信号; 以及被配置为向所述中间信号提供增益的动态可配置变压器，其中所述增益是可动态配置的。

公开(公告)号：US08467760B2

公开(公告)日：2013-06-18

申请号：US12497298

申请日：2009-07-02

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04B1/18 ,  H04B1/10

CPC分类号： H03H19/008

摘要： Embodiments of a SAW-less RF receiver front-end that includes a frequency translated notch filter (FTNF) are presented. An FTNF includes a passive mixer and a baseband impedance. The baseband impedance includes capacitors that form a low-Q band-stop filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q notch filter and is presented at the input of the FTNF. The FTNF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including EDGE/GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11). In addition, embodiments of a generalized FTNF for wideband applications are presented.

摘要翻译： 提供了包括频率转换陷波滤波器（FTNF）的无SAW无RF接收机前端的实施例。 FTNF包括无源混频器和基带阻抗。 基带阻抗包括形成低Q带阻滤波器的电容器。 无源混频器被配置为将基带阻抗转换到更高的频率。 经翻译的基带阻抗形成高Q陷波滤波器，并呈现在FTNF的输入端。 FTNF可以完全集成到CMOS IC技术（或其他，例如双极，BiCMOS和SiGe）中，并应用于无线接收机系统，包括EDGE / GSM，宽带码分多址（WCDMA），蓝牙和无线局域网（例如 ，IEEE 802.11）。 另外，提出了宽带应用的广义FTNF的实施例。

公开(公告)号：US08301101B2

公开(公告)日：2012-10-30

申请号：US12470789

申请日：2009-05-22

申请人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

发明人： Ahmad Mirzaei ,  Hooman Darabi ,  John Leete

IPC分类号： H04B1/18 ,  H04B1/10

CPC分类号： H04B1/30 ,  H03D7/1458 ,  H03D7/1466 ,  H03H19/004

摘要： Embodiments of a frequency translated filter (FTF) are presented. An FTF includes a passive mixer and a baseband impedance. The baseband impedance includes a network of one or more passive components (e.g., resistors, inductors, and capacitors) that form a low-Q filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q filter and is presented at the input of the FTF. The FTF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11).

摘要翻译： 提出了频率转换滤波器（FTF）的实施例。 FTF包括无源混频器和基带阻抗。 基带阻抗包括形成低Q滤波器的一个或多个无源组件（例如，电阻器，电感器和电容器）的网络。 无源混频器被配置为将基带阻抗转换到更高的频率。 转换的基带阻抗形成高Q滤波器，并在FTF的输入端呈现。 FTF可以完全集成在CMOS IC技术（或其他，例如双极，BiCMOS和SiGe）中，并且应用于包括GSM，宽带码分多址（WCDMA），蓝牙和无线LAN（例如IEEE）的无线接收机系统中 802.11）。

公开(公告)号：US08275332B2

公开(公告)日：2012-09-25

申请号：US13303066

申请日：2011-11-22

申请人： Ahmad Mirzaei ,  Alireza Zolfaghari ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Alireza Zolfaghari ,  Hooman Darabi

IPC分类号： H04B1/04

CPC分类号： H03G1/0029 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/0025 ,  H03G1/0088

摘要： An apparatus comprising a plurality of switchable full step mixer unit cells, wherein each switchable full step unit cell is configured to, when the full step transceiver mixer unit cell is turned on, increase the gain experienced by an electronic signal by a full step increment, and wherein the step increment is substantially constant regardless of temperature; and at least one switchable partial step mixer unit cell configured to, when the partial step transceiver mixer unit is turned on, increase the gain experienced by the electronic signal by a predetermined step increment less than that of a full step, and wherein the partial step increment is substantially constant regardless of temperature.

摘要翻译： 一种包括多个可切换全步骤混合器单位单元的装置，其中每个可切换全阶单元单元被配置为当全步进收发器混合器单元被接通时，增加电子信号经历的增益全步进增量， 并且其中所述阶梯增量基本上恒定，不管温度如何; 以及至少一个可切换部分步骤混合器单元，其被配置为当所述部分步骤收发器混合器单元被接通时，增加所述电子信号经历的增益小于完整步长的预定步长增量，并且其中所述部分步骤 无论温度如何，增量都是基本恒定的。

公开(公告)号：US08238862B2

公开(公告)日：2012-08-07

申请号：US12497317

申请日：2009-07-02

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04B1/18 ,  H04B1/10

CPC分类号： H04B1/1036 ,  H03F1/223 ,  H03F3/195 ,  H03F3/45179 ,  H03F2200/294 ,  H03F2203/45302 ,  H03F2203/45394 ,  H03H19/008 ,  H03H2011/0488

摘要： Embodiments of a SAW-less RF receiver front-end that includes a frequency translated notch filter (FTNF) are presented. An FTNF includes a passive mixer and a baseband impedance. The baseband impedance includes capacitors that form a low-Q band-stop filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q notch filter and is presented at the input of the FTNF. In an embodiment, the capacitors are implemented using MOS capacitors. In another embodiment, the capacitors are partially formed from MOS capacitors and fringe capacitors. The FTNF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including EDGE/GSM, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11).

摘要翻译： 提供了包括频率转换陷波滤波器（FTNF）的无SAW无RF接收机前端的实施例。 FTNF包括无源混频器和基带阻抗。 基带阻抗包括形成低Q带阻滤波器的电容器。 无源混频器被配置为将基带阻抗转换到更高的频率。 经翻译的基带阻抗形成高Q陷波滤波器，并呈现在FTNF的输入端。 在一个实施例中，使用MOS电容器实现电容器。 在另一个实施例中，电容器部分地由MOS电容器和边缘电容器形成。 FTNF可以完全集成到CMOS IC技术（或其他，例如双极，BiCMOS和SiGe）中，并应用于无线接收机系统，包括EDGE / GSM，宽带码分多址（WCDMA），蓝牙和无线局域网（例如 ，IEEE 802.11）。

公开(公告)号：US20120071119A1

公开(公告)日：2012-03-22

申请号：US13303066

申请日：2011-11-22

申请人： Ahmad Mirzaei ,  Alireza Zolfaghari ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Alireza Zolfaghari ,  Hooman Darabi

IPC分类号： H04B1/04

CPC分类号： H03G1/0029 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/0025 ,  H03G1/0088

摘要： An apparatus comprising a plurality of switchable full step mixer unit cells, wherein each switchable full step unit cell is configured to, when the full step transceiver mixer unit cell is turned on, increase the gain experienced by an electronic signal by a full step increment, and wherein the step increment is substantially constant regardless of temperature; and at least one switchable partial step mixer unit cell configured to, when the partial step transceiver mixer unit is turned on, increase the gain experienced by the electronic signal by a predetermined step increment less than that of a full step, and wherein the partial step increment is substantially constant regardless of temperature.

摘要翻译： 一种包括多个可切换全步骤混合器单位单元的装置，其中每个可切换全阶单元单元被配置为当全步进收发器混合器单元被接通时，增加电子信号经历的增益全步进增量， 并且其中所述阶梯增量基本上恒定，不管温度如何; 以及至少一个可切换部分步骤混合器单元，其被配置为当所述部分步骤收发器混合器单元被接通时，增加所述电子信号经历的增益小于完整步长的预定步长增量，并且其中所述部分步骤 无论温度如何，增量都是基本恒定的。

公开(公告)号：US20110299635A1

公开(公告)日：2011-12-08

申请号：US13076251

申请日：2011-03-30

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04L27/06

CPC分类号： H04L27/06 ,  H04L27/34

摘要： A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a mixing module, a mixed buffer section, and a frequency translated BPF (FTBPF) circuit module. The mixing module converts an inbound RF signal into an in-phase (I) mixed signal and a quadrature (Q) mixed signal. The mixed buffer section filters and buffers the I mixed signal and filter and buffer the Q mixed signal. The FTBPF circuit module frequency translates a baseband filter response to an IF filter response such that the FTBPF circuit module filters undesired signal components of the IF I signal and the IF Q signal to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.

摘要翻译： 无SAW接收机包括FEM接口模块，RF至IF接收机部分和接收机IF到基带部分。 RF至IF接收器部分包括混合模块，混合缓冲器部分和频率转换BPF（FTBPF）电路模块。 混合模块将入站RF信号转换为同相（I）混合信号和正交（Q）混合信号。 混合缓冲区对I混合信号进行滤波和缓冲，并对Q混合信号进行滤波和缓冲。 FTBPF电路模块频率将基带滤波器响应转换为IF滤波器响应，使得FTBPF电路模块滤除IF I信号和IF Q信号的不期望的信号分量以产生入站IF信号。 接收机IF到基带部分将入站IF信号转换成一个或多个入站符号流。

公开(公告)号：US20110299459A1

公开(公告)日：2011-12-08

申请号：US13070980

申请日：2011-03-24

申请人： Ahmad Mirzaei ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Hooman Darabi

IPC分类号： H04W88/00

CPC分类号： H04L5/1461 ,  H03F1/56 ,  H03F3/195 ,  H03F2200/294 ,  H03F2200/537 ,  H03H7/40 ,  H04B1/0458 ,  H04B1/10 ,  H04B1/18 ,  H04B1/525 ,  H04B1/581

摘要： A SAW-less receiver includes a front end module (FEM) interface module, an RF to IF section, and an IF to baseband section. The RF to IF section includes a frequency translated bandpass filter (FTBPF), an LNA, and a mixing section. The FTBPF includes a switching network and a complex baseband filter having an offset baseband filter response. The switching network is operable to frequency translate the offset baseband filter response to an RF frequency response such that the FTBPF filters the inbound RF signal by passing, substantially unattenuated, a desired RF signal component and by attenuating an image signal component and/or an undesired signal component. The LNA amplifies the filtered inbound RF signal and the mixing section mixes the amplified inbound RF signal with a local oscillation to produce an inbound IF signal. The IF to baseband section converts the inbound IF signal into an inbound symbol stream(s).

摘要翻译： 无SAW接收器包括前端模块（FEM）接口模块，RF至IF部分和IF到基带部分。 RF到IF部分包括频率转换带通滤波器（FTBPF），LNA和混合部分。 FTBPF包括交换网络和具有偏移基带滤波器响应的复基带滤波器。 切换网络可操作以将偏移基带滤波器响应频率转换为RF频率响应，使得FTBPF通过使基本上未衰减的期望RF信号分量通过，并且通过衰减图像信号分量和/或不期望的 信号分量。 LNA放大滤波的入站RF信号，混合部分将放大的入站RF信号与本地振荡混频，以产生入站IF信号。 IF到基带部分将入站IF信号转换成入站符号流。

公开(公告)号：US20110012692A1

公开(公告)日：2011-01-20

申请号：US12505140

申请日：2009-07-17

申请人： Ahmad MIRZAEI ,  Hooman Darabi

发明人： Ahmad MIRZAEI ,  Hooman Darabi

IPC分类号： H03H7/12

CPC分类号： H03H7/12 ,  H03H1/02 ,  H03H11/04 ,  H03H11/0427 ,  H03H2250/00 ,  H03M1/661

摘要： Embodiments of the present invention relate generally to reconstruction filtering. In particular, embodiments enable highly linear, highly programmable, and easily reconfigurable reconstruction filters. Further, embodiments provide substantial power consumption, area, and cost savings compared to conventional solutions. For example, embodiments use all-passive filtering and substantially reduce active elements compared to conventional solutions. As a result, significant reductions in required area, noise, and power consumption can be achieved. In addition, embodiments perform filtering solely in the current domain, thereby eliminating the non-linear voltage-to-current conversion used in conventional circuits and enabling highly linear filtering. Furthermore, embodiments are highly programmable and easily reconfigurable without the use of tunable capacitors. As such, embodiments are very suitable solutions for multi-band multi-mode wireless transmitters.

摘要翻译： 本发明的实施例一般涉及重建过滤。 具体地，实施例使得能够实现高度线性，高度可编程且易于重构的重构滤波器。 此外，与传统解决方案相比，实施例提供了大量的功耗，面积和成本节约。 例如，与常规解决方案相比，实施例使用全无源滤波并且基本上减少有源元件。 因此，可以实现所需面积，噪声和功耗的显着降低。 此外，实施例仅在当前领域中执行滤波，从而消除在常规电路中使用的非线性电压 - 电流转换并且实现高度线性滤波。 此外，实施例是高度可编程的并且在不使用可调谐电容器的情况下容易重新配置。 因此，实施例是用于多频带多模式无线发射机的非常合适的解决方案。