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公开(公告)号：US20240178795A1
公开(公告)日：2024-05-30
申请号：US18060295
申请日：2022-11-30
发明人： Mohamed Abouzied , Chuan Wang , Anosh Davierwalla , Muhammad Hassan , Vinod Panikkath , Li Liu
CPC分类号： H03D7/1491 , H04B17/21
摘要： An apparatus is disclosed for oscillator feedthrough calibration, such as a component arrangement that can be calibrated to account for signal leakage from an oscillator coupled to a mixer circuit. In example aspects, the apparatus includes a mixer circuit having a first stage, a second stage, and tuning circuitry. The first stage includes at least one transistor coupled between a mixer input and a mixer output. The second stage includes one or more transistors coupled between the at least one transistor of the first stage and the mixer output. The one or more transistors are also coupled between a local oscillator signal input and the mixer output. The tuning circuitry includes at least one current source coupled to the at least one transistor of the first stage.
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公开(公告)号：US09874896B2
公开(公告)日：2018-01-23
申请号：US15226568
申请日：2016-08-02
发明人： Edoardo Botti
CPC分类号： G05F3/267 , H02M2001/0003 , H03D7/1491 , H03F1/3211 , H03F3/183 , H03F3/185 , H03F3/217 , H03F3/393 , H03F3/45183 , H03F3/45197 , H03F3/45775 , H03F2200/03 , H03F2200/351 , H03F2203/45356 , H03F2203/45392
摘要： A voltage-current converter includes a first input stage and a second input stage with a first transistor and a second transistor driven by the first input stage and by the second input stage, respectively. First and second current generators are coupled to current lines of the first transistor and of the second transistor. At least one resistor couples the current lines of the first transistor and of the second transistor, where the ends of the aforesaid resistor are coupled to feedback terminals of the input stages so that an input voltage applied between voltage input terminals of the input stages is converted into a current on respective current output terminals of the converter. The converter includes switching circuits for coupling the first and second current generators alternately to the current line of the first transistor and to the current line of the second transistor.
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公开(公告)号：US20150249474A1
公开(公告)日：2015-09-03
申请号：US14710764
申请日：2015-05-13
发明人： Saverio Trotta , Herbert Knapp
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03D7/1433 , H03D7/1458 , H03D7/1491
摘要： A mixing stage includes a first modulation stage that receives an input signal from a first common node of the mixing stage, a first local oscillator input that receives a local oscillator signal, and a first modulation signal output adapted to provide a first modulated signal. A second modulation stage of the mixing stage includes a second input that receives a phase inverted representation of the input signal from a second common node of the mixing stage, a second local oscillator input that receives the local oscillator signal, and a second modulation signal output adapted to provide a second modulated signal. A current generation circuit provides a supply current to the first common node and to the second common node. A current control circuit is adapted to superimpose an offset current to the current of at least one node of the first common node and the second common node.
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公开(公告)号：US09065507B2
公开(公告)日：2015-06-23
申请号：US14019028
申请日：2013-09-05
发明人： Saverio Trotta , Herbert Knapp
CPC分类号： H04B1/0475 , H03D7/1433 , H03D7/1458 , H03D7/1491
摘要： A mixing stage includes a first modulation stage that receives an input signal from a first common node of the mixing stage, a first local oscillator input that receives a local oscillator signal, and a first modulation signal output adapted to provide a first modulated signal. A second modulation stage of the mixing stage includes a second input that receives a phase inverted representation of the input signal from a second common node of the mixing stage, a second local oscillator input that receives the local oscillator signal, and a second modulation signal output adapted to provide a second modulated signal. A current generation circuit provides a supply current to the first common node and to the second common node. A current control circuit is adapted to superimpose an offset current to the current of at least one node of the first common node and the second common node.
摘要翻译： 混合级包括从混合级的第一公共节点接收输入信号的第一调制级，接收本地振荡器信号的第一本地振荡器输入和适于提供第一调制信号的第一调制信号输出。 混合级的第二调制级包括第二输入端，其接收来自混频级的第二公共节点的输入信号的相位反转表示，接收本机振荡器信号的第二本机振荡器输入端和第二调制信号输出端 适于提供第二调制信号。 电流产生电路向第一公共节点和第二公共节点提供电源电流。 电流控制电路适于将偏移电流叠加到第一公共节点和第二公共节点的至少一个节点的电流。
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公开(公告)号：US20150070071A1
公开(公告)日：2015-03-12
申请号：US14394956
申请日：2013-04-03
发明人： Martin Andersson , Lars Sundstrom
IPC分类号： H03D7/14
CPC分类号： H03D7/1491 , H03D7/1458 , H03D7/1466 , H03D7/1475 , H03D7/165 , H03D2200/0086
摘要： It is disclosed a mixer arrangement for complex signal mixing comprising a first harmonic rejection mixer, and a second harmonic rejection mixer. Each of the harmonic rejection mixers comprises mixer unit cells wherein each mixer unit cell comprises a differential input, transconductance elements corresponding to the differential input, and a switching network arranged to switch signals from the transconductance elements to a differential output, and the first and the second harmonic rejection mixers have mutual quadrature phase relationship. The first and the second rejection mixer share a plurality of mixer unit cell, each comprising an input for receiving a signal to be mixed, an input for receiving control signals derived from a local oscillator signal, and one output for each of the first and second harmonic rejection mixers. A radio circuit comprising such a mixer arrangement and a communication apparatus comprising such a radio circuit are also disclosed.
摘要翻译： 公开了一种用于复数信号混合的混频器装置，其包括第一谐波抑制混频器和二次谐波抑制混频器。 每个谐波抑制混频器包括混频器单元，其中每个混频器单元包括差分输入，对应于差分输入的跨导元件和布置成将来自跨导元件的信号切换到差分输出的开关网络，以及第一和第 二次谐波抑制混频器具有相互正交相位关系。 第一和第二拒绝混频器共享多个混频器单元，每个混频器单元包括用于接收待混合信号的输入端，用于接收从本地振荡器信号导出的控制信号的输入端，以及用于第一和第二 谐波抑制混频器 还公开了包括这种混频器装置的无线电电路和包括这种无线电电路的通信装置。
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公开(公告)号：US08963612B1
公开(公告)日：2015-02-24
申请号：US14030411
申请日：2013-09-18
CPC分类号： H03D7/1491 , H03D7/1433 , H03D7/1458
摘要： A multi-mode circuit can switch an output section between mixer and amplifier modes, with or without variable gain, to create a variable gain amplifier or a variable gain mixer or route an input signal by adjusting a bias current. An input section is controlled by a bias section and connected to the output section. The output section includes a first base-coupled transistor pair adapted to receive an input signal at emitters of the first base-coupled transistor pair, receive a bias signal at bases of the first base-coupled transistor pair, and provide an output signal at collectors of the first base-coupled transistor pair.
摘要翻译： 多模电路可以在具有或不具有可变增益的混频器和放大器模式之间切换输出部分，以通过调整偏置电流来创建可变增益放大器或可变增益混频器或路由输入信号。 输入部分由偏置部分控制并连接到输出部分。 输出部分包括第一基极耦合晶体管对，其适于在第一基极耦合晶体管对的发射极处接收输入信号，在第一基极耦合晶体管对的基极处接收偏置信号，并在集电极处提供输出信号 的第一基极耦合晶体管对。
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7.发明授权Frequency mixing circuit and method for suppressing local oscillation leakage in frequency mixing circuit 有权用于抑制混频电路中局部振荡泄漏的混频电路及方法公开(公告)号：US08947151B2
公开(公告)日：2015-02-03
申请号：US14043116
申请日：2013-10-01
发明人： Hua Cai , Songlin Shuai , Jia He , Yong Zhang
CPC分类号： H03D7/1491 , H03D7/00 , H03D7/18 , H03D2200/0045 , H03D2200/009 , H04B1/30
摘要： Embodiments of the present invention disclose a frequency mixing circuit and a method for suppressing local oscillation leakage in the frequency mixing circuit, where a mixed input signal and a local oscillation signal are involved, and local oscillation leakage can be effectively reduced by using a frequency mixing circuit whose structure is simpler and is easier to be implemented. The frequency mixing circuit includes a direct current bias circuit, where the direct current bias circuit includes a direct current bias voltage source used for reducing a local oscillation current. The frequency mixing circuit is mainly applied to frequency mixing, and especially to a case where an intermediate frequency signal is mixed with a local oscillation signal to output a radio frequency signal.
摘要翻译： 本发明的实施例公开了一种混频电路和一种用于抑制混频电路中局部振荡泄漏的方法，其中涉及混合输入信号和本地振荡信号，并且可以通过使用频率混频来有效地降低局部振荡泄漏 电路的结构更简单，更易于实现。 该混频电路包括直流偏置电路，其中直流偏置电路包括用于减小局部振荡电流的直流偏置电压源。 混频电路主要应用于混频，尤其适用于将中频信号与本地振荡信号混合以输出射频信号的情况。
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公开(公告)号：US08913968B2
公开(公告)日：2014-12-16
申请号：US13672450
申请日：2012-11-08
申请人： Broadcom Corporation
发明人： Ahmad Mirzaei , Hooman Darabi
CPC分类号： H04B1/04 , H03B19/00 , H03D7/1433 , H03D7/1458 , H03D7/1466 , H03D7/1491 , H03D7/165 , H04B1/0475
摘要： A transmitter includes a power amplifier driver to amplify a communication signal and a mixer connected with the power amplifier driver, the mixer to output the communication signal to the power amplifier driver. A capacitor and an inductor connect with the mixer and the power amplifier driver. The capacitor and the inductor create a resonant frequency to attenuate frequency components around a determined order of a local oscillator signal.
摘要翻译： 发射机包括用于放大通信信号的功率放大器驱动器和与功率放大器驱动器连接的混频器，混频器将通信信号输出到功率放大器驱动器。 电容器和电感器与混频器和功率放大器驱动器连接。 电容器和电感器产生谐振频率以衰减围绕本地振荡器信号的确定阶数的频率分量。
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公开(公告)号：US08792847B2
公开(公告)日：2014-07-29
申请号：US13560097
申请日：2012-07-27
申请人： Haitao Gan , Xiaoyong Li
发明人： Haitao Gan , Xiaoyong Li
CPC分类号： H04B1/12 , H03D3/009 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D7/1491 , H03D7/165 , H03D2200/0023 , H03D2200/0088 , H04B1/16
摘要： A circuit used in a mixer configured to receive a signal made up of a relatively small modulation signal and a relatively large carrier signal is described. The mixer includes multiple switches. A balancing circuit configured to receive a supply voltage and a clocking signal is provided, and the balancing circuit provides a control signal to a switch in the mixer. The balancing circuit includes a capacitor configured to receive and selectively dissipate charge as a gate voltage along a gate path. The control signal causes switching of the switch in the mixer at times in accordance with the clocking signal according to a voltage difference value between a source voltage and the gate voltage, wherein the voltage difference value between the source voltage and the gate voltage is approximately a predetermined voltage value greater than a turn on voltage level of the switch.
摘要翻译： 描述了用于接收由相对小的调制信号和较大载波信号组成的信号的混频器中使用的电路。 混音器包括多个开关。 提供了一种被配置为接收电源电压和时钟信号的平衡电路，并且平衡电路向混频器中的开关提供控制信号。 平衡电路包括被配置为沿着栅极路径接收和选择性地耗散电荷作为栅极电压的电容器。 控制信号根据源电压和栅极电压之间的电压差值，根据时钟信号，在混频器中切换开关，其中源极电压和栅极电压之间的电压差大约为 预定的电压值大于开关的接通电压电平。
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公开(公告)号：US20140087669A1
公开(公告)日：2014-03-27
申请号：US14024989
申请日：2013-09-12
发明人： CHAO HSI CHUANG
CPC分类号： H03D7/1491 , H03D7/1441 , H03D7/145 , H04B1/40 , H04B17/21
摘要： A mixer with calibration circuit includes a first gm stage unit, a second gm stage unit, a first detecting unit, a second detecting unit, a comparison block, a control unit and a compensator. The first detecting unit and the second detecting unit are respectively connected to different gm stage unit, and the comparison block compares voltage signals of the first detecting unit and the second detecting unit. The control unit adjusts a current signal of the comparison block according to the comparative result of voltage signals of the first detecting unit and the second detecting unit. Further, the compensator adjusts the first gm stage unit and the second gm stage unit according to the current signal. Thereafter, the improvement of the LO leakage of the mixer can be achieved.
摘要翻译： 具有校准电路的混频器包括第一gm级单元，第二gm级单元，第一检测单元，第二检测单元，比较块，控制单元和补偿器。 第一检测单元和第二检测单元分别连接到不同的gm级单元，比较块比较第一检测单元和第二检测单元的电压信号。 控制单元根据第一检测单元和第二检测单元的电压信号的比较结果来调整比较块的电流信号。 此外，补偿器根据当前信号调整第一gm级单元和第二gm级单元。 此后，可以实现混合器的LO泄漏的改善。
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