公开(公告)号：US20090088121A1

公开(公告)日：2009-04-02

申请号：US12236726

申请日：2008-09-24

Applicant: Nianwei Xing ,  David H. Shen ,  Ann P. Shen

Inventor： Nianwei Xing ,  David H. Shen ,  Ann P. Shen

IPC: H04B1/18

CPC classification number: H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/1491 ,  H03D2200/0084

Abstract: Circuits and methods for a mixer circuit involve having a first transistor with first and second terminals, where the first terminal is configured to handle an input RF signal. The mixer has a second transistor including a first terminal coupled to the second terminal of the first transistor, a second terminal configured to handle an input oscillator signal, and a third terminal configured to output an intermediate frequency (IF) signal. The IF signal includes a mixed product of the input RF signal and the input oscillator signal. A gate oxide thickness of the first transistor is less than a gate oxide thickness of the second transistor to provide enhanced linearity and a low noise figure. One or more of the mixers can be implemented in a receiver design.

Abstract translation: 用于混频器电路的电路和方法包括具有第一和第二端子的第一晶体管，其中第一端子被配置为处理输入RF信号。 混频器具有第二晶体管，其包括耦合到第一晶体管的第二端子的第一端子，被配置为处理输入振荡器信号的第二端子和被配置为输出中频（IF）信号的第三端子。 IF信号包括输入RF信号和输入振荡器信号的混合积。 第一晶体管的栅极氧化物厚度小于第二晶体管的栅极氧化物厚度，以提供增强的线性度和低噪声系数。 一个或多个混音器可以在接收机设计中实现。

公开(公告)号：US07509111B2

公开(公告)日：2009-03-24

申请号：US10978242

申请日：2004-10-29

Applicant: Jorg Langenberg ,  Thomas Liebermann ,  Werner Simburger ,  Marc Tiebout ,  Hans-Dieter Wohlmuth

Inventor： Jorg Langenberg ,  Thomas Liebermann ,  Werner Simburger ,  Marc Tiebout ,  Hans-Dieter Wohlmuth

IPC: H04B1/40

CPC classification number: H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0084

Abstract: Integrated circuit including a mixer circuit, which has a first circuit section, a second circuit section, and a transformer. The first circuit section has two radiofrequency terminals. The second circuit section has two reference oscillator terminals, an active mixer unit with a signal-amplifying unit, and two intermediate frequency terminals. The active mixer unit and the signal-amplifying unit have a common current path. The transformer directly electrically decouples the two radiofrequency terminals from the active mixer unit, and couples the first circuit section and the second circuit section together such that each of the two circuit sections is separately supplied with a full operating voltage of the integrated circuit. The integrated circuit may additionally include a second transformer connected between the active mixer unit and the two intermediate frequency terminals.

Abstract translation: 包括具有第一电路部分，第二电路部分和变压器的混频器电路的集成电路。 第一电路部分有两个射频终端。 第二电路部分具有两个参考振荡器端子，具有信号放大单元的有源混频器单元和两个中频终端。 有源混频器单元和信号放大单元具有公共电流路径。 变压器将两个射频终端直接电耦合到有源混频器单元，并且将第一电路部分和第二电路部分耦合在一起，使得两个电路部分中的每一个分别被提供有集成电路的完整工作电压。 集成电路还可以包括连接在有源混频器单元和两个中频终端之间的第二变压器。

公开(公告)号：US07483687B2

公开(公告)日：2009-01-27

申请号：US11431972

申请日：2006-05-11

Applicant: Frederic Carrez

Inventor： Frederic Carrez

IPC: H04B1/10

CPC classification number: H04B1/28 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1475 ,  H03D7/165 ,  H03D2200/0084

Abstract: A method and apparatus for frequency down-converting a radio frequency (RF) signal to baseband in two steps using the two quadrature components of a single local oscillator. In the first stage, the RF signal is mixed with both components of the local oscillator signal (LO) in a sub-harmonic mixer to produce an intermediate frequency (IF) output signal having a frequency component at twice the local oscillator frequency minus the RF frequency, i.e., (2×LO)−RF=IF. In the second stage, the IF signal is split into two and supplied to a quadrature mixer that mixes the IF signal with the I component of the same local oscillator signal and separately mixes the IF signal with the Q component of the same local oscillator signal to produce an output signal comprising an I component and a separate Q component at baseband.

Abstract translation: 一种使用单个本地振荡器的两个正交分量在两个步骤中将射频（RF）信号降频转换为基带的方法和装置。 在第一级中，将RF信号与亚谐波混频器中的本地振荡器信号（LO）的两个分量混合，以产生具有两倍于本地振荡器频率的频率分量的中频（IF）输出信号减去RF 频率，即（2xLO）-RF = IF。 在第二级中，IF信号被分成两部分，并提供给正交混频器，该正交混频器将IF信号与相同本地振荡器信号的I分量混合，并将IF信号与相同本地振荡器信号的Q分量混合 在基带产生包括I分量和单独的Q分量的输出信号。

公开(公告)号：US20080036523A1

公开(公告)日：2008-02-14

申请号：US11112581

申请日：2005-04-22

Applicant: Manjo Nijrolder

Inventor： Manjo Nijrolder

IPC: G06F7/44

CPC classification number: H03D7/1441 ,  G06G7/16 ,  H03D7/1458 ,  H03D2200/0033 ,  H03D2200/0084

Abstract: A current mode multiplier circuit is provided based on the square root; voltage-current relationship of an MOS transistor. The circuit includes first, second and third MOS transistors with a common aspect ratio, and first and second current sources that respectively provide first and second input currents that represent first and second factors to be multiplied. The first and second MOS transistors produce first and second voltages as a function of the first and second input currents, and the third MOS transistor produces a third current as a function of the first and second voltages. In response to the third current, the circuit produces a product signal that represents a product of the first and second factors.

Abstract translation: 基于平方根提供电流模式乘法器电路; MOS晶体管的电压 - 电流关系。 该电路包括具有公共纵横比的第一，第二和第三MOS晶体管以及分别提供表示要乘以第一和第二因子的第一和第二输入电流的第一和第二电流源。 第一和第二MOS晶体管产生作为第一和第二输入电流的函数的第一和第二电压，并且第三MOS晶体管产生作为第一和第二电压的函数的第三电流。 响应于第三电流，电路产生代表第一和第二因子的乘积的乘积信号。

公开(公告)号：US20070264960A1

公开(公告)日：2007-11-15

申请号：US11723699

申请日：2007-03-21

Applicant: Chen-Ching Lin ,  Ying-Che Tseng

Inventor： Chen-Ching Lin ,  Ying-Che Tseng

IPC: H04B1/26

CPC classification number: H03D7/145 ,  H03D7/1491 ,  H03D2200/0033 ,  H03D2200/0084

Abstract: A conversion mixer includes a mixing circuit, a duplicating circuit and a loading circuit. The mixing circuit receives a couple of first input signals and a couple of second input signals and mixes the couple of first input signals with the couple of second input signals to output a couple of mixed signals. The duplicating circuit coupled to the mixing circuit receives the couple of mixed signals and duplicates the couple of mixed signals to output a couple of duplicated signals. The loading circuit coupled to the duplicating circuit receives the couple of duplicated signals and outputs a couple of output signals according to the couple of duplicated signals.

Abstract translation: 转换混合器包括混合电路，复制电路和加载电路。 混合电路接收一对第一输入信号和一对第二输入信号，并将第一输入信号的一对与第二输入信号的一对混合以输出一对混合信号。 耦合到混合电路的复制电路接收一对混合信号并复制这些混合信号以输出一对复制的信号。 耦合到复制电路的负载电路接收一对复制信号，并根据这些复制信号的一对输出一对输出信号。

公开(公告)号：US20070058751A1

公开(公告)日：2007-03-15

申请号：US11313616

申请日：2005-12-22

Applicant: Hae-Moon Seo ,  Yeon-Kuk Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Myung-Hyun Yoon ,  Seong-Dong Kim

Inventor： Hae-Moon Seo ,  Yeon-Kuk Moon ,  Young-Kuk Park ,  Kwang-Ho Won ,  Myung-Hyun Yoon ,  Seong-Dong Kim

IPC: H04L27/12

CPC classification number: H03D7/145 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0084

Abstract: The present invention relates to an I/Q modulator using a current-mixing method used for a direct conversion wireless communication transmitter. In accordance with the present invention, an EVM of a wireless communication system, a linearity and a power consumption are improved by converting a D/A converted signal to a current level and then performing a frequency modulation.

Abstract translation: 本发明涉及使用用于直接转换无线通信发射机的电流混合方法的I / Q调制器。 根据本发明，通过将D / A转换的信号转换为当前电平然后执行频率调制，可以提高无线通信系统的EVM，线性度和功耗。

公开(公告)号：US07177620B1

公开(公告)日：2007-02-13

申请号：US10388920

申请日：2003-03-14

Applicant: King Chun Tsai ,  Lawrence Tse

Inventor： King Chun Tsai ,  Lawrence Tse

IPC: H04B1/28 ,  H04B1/26

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03D2200/0096

Abstract: A Gilbert cell mixer for a wireless transceiver includes a first stage that performs voltage to current conversions and that includes first and second transistors that are operated in a saturation region and third and fourth transistors that are operated in a triode region. A second stage communicates with the first stage and that performs frequency conversion. A biasing circuit communicates with the first stage to maintain a substantially constant input linear range over temperature and process variations.

Abstract translation: 用于无线收发器的吉尔伯特单元混合器包括执行电压到电流转换的第一级，并且包括在饱和区域中操作的第一和第二晶体管以及在三极管区域中操作的第三和第四晶体管。 第二级与第一级通信并执行频率转换。 偏置电路与第一级通信，以保持温度和过程变化之间基本恒定的输入线性范围。

公开(公告)号：US20070010228A1

公开(公告)日：2007-01-11

申请号：US11472632

申请日：2006-06-21

Applicant: Werner Schelmbauer ,  Josef Zipper

Inventor： Werner Schelmbauer ,  Josef Zipper

IPC: H04B1/26

CPC classification number: H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/165 ,  H03D2200/0019 ,  H03D2200/0033 ,  H03D2200/0043 ,  H03D2200/0084

Abstract: A mixer arrangement includes a mixer cell coupled by a signal input to a mixer input, and is embodied for frequency conversion of a signal present on the input side to an intermediate frequency. A first current source is coupled to the signal input of the mixer cell, and a second current source is coupled to a signal output of the mixer cell. The mixer arrangement furthermore includes a sensor circuit embodied for detection and for outputting of a value which is derived from a current of one of the current sources. A desired value regulating circuit is coupled by a feedback input to the sensor circuit and is designed for outputting a regulating signal to the one current source derived from a comparison of a signal present at a feedback input with a desired value.

Abstract translation: 混合器装置包括通过信号输入耦合到混频器输入端的混频器单元，并且被实现为存在于输入侧的信号的频率转换为中频。 第一电流源耦合到混频器单元的信号输入，并且第二电流源耦合到混频器单元的信号输出。 混频器装置还包括实现用于检测和输出从当前源中的一个的电流导出的值的传感器电路。 期望的值调节电路通过反馈输入耦合到传感器电路，并且被设计用于从在反馈输入端存在的信号与期望值的比较中导出一个电流源的调节信号。

公开(公告)号：US07161406B1

公开(公告)日：2007-01-09

申请号：US10824960

申请日：2004-04-15

Applicant: Daniel J. Ferris

Inventor： Daniel J. Ferris

IPC: G06F7/44

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0084

Abstract: A method and apparatus for providing non 2:1 current in a Gilbert cell mixer is disclosed. The Gilbert cell mixer provides lower voltage operation, lower LO drive and better linearity. Additional current sources are provided to drive the lower, source-coupled transistor pair thereby allowing operation of the switch transistors with lower current.

Abstract translation: 公开了一种在吉尔伯特细胞混合器中提供非2:1电流的方法和装置。 吉尔伯特电池混合器提供更低的电压操作，更低的LO驱动和更好的线性度。 提供额外的电流源来驱动下部源极耦合晶体管对，从而允许具有较低电流的开关晶体管的操作。

公开(公告)号：US20070004369A1

公开(公告)日：2007-01-04

申请号：US11414346

申请日：2006-05-01

Applicant: Ick-jin Kwon ,  Yun-seong Eo ,  Heung-bae Lee

Inventor： Ick-jin Kwon ,  Yun-seong Eo ,  Heung-bae Lee

IPC: H04B1/26

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D2200/0084

Abstract: Provided is a mixer including: an amplifier amplifying an input signal using at least one amplifier element; a mixing unit mixing the input signal amplified by the amplifier with a local oscillator signal output from a local oscillator. The mixing unit includes at least one pair of switching elements switching the amplifier, and the switching elements are MOSFETs having gates and body nodes to which a same local oscillator signal is applied. Thus, a time required for turning on the switching elements can be reduced, and 1/f noise is also reduced. Also, an overdrive voltage can be increased with respect to local oscillator signals having an identical intensity. Thus, a relatively low voltage operation can be performed.

Abstract translation: 提供一种混频器，包括：使用至少一个放大器元件放大输入信号的放大器; 混合单元将由放大器放大的输入信号与从本地振荡器输出的本地振荡器信号进行混合。 混合单元包括至少一对开关放大器的开关元件，并且开关元件是具有施加相同本地振荡器信号的门和体节点的MOSFET。 因此，可以减少接通开关元件所需的时间，并且还可以降低1 / f噪声。 此外，相对于具有相同强度的本机振荡器信号，可以增加过驱动电压。 因此，可以执行相对低的电压操作。