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1. 发明授权

US07342432B2 Mixer circuit having improved linearity and noise figure 失效
标题翻译：混频器电路具有改善的线性度和噪声系数
公开(公告)号：US07342432B2
公开(公告)日：2008-03-11
申请号：US10775234
申请日：2004-02-11
申请人： Tae-Wook Kim , Bon-Kee Kim , Kwy-Ro Lee
发明人： Tae-Wook Kim , Bon-Kee Kim , Kwy-Ro Lee
IPC分类号： G06G7/16
CPC分类号： H03F3/45089 , H03F2203/45318 , H03F2203/45496 , H03F2203/45702
摘要： A mixer circuit having improved linearity and noise figure is disclosed. The mixer circuit comprises an amplification unit having an input terminal and an output terminal, the amplification unit amplifying a signal applied to the input terminal to output it to the output terminal; a mixing unit having first, second and third input terminals, and first and second output terminals, the mixing unit mixing signals respectively applied to the first and second input terminals with a signal supplied to the third input terminal, to respectively output the mixed signals to the first and second output terminals; a capacitor connected between the output terminal of the amplification unit and the third input terminal of the mixing unit; and a current source for providing a specific quantity of current to the third input terminal of the mixing unit such that the quantity of current flowing through the third input terminal of the mixing unit is substantially larger than the quantity of current flowing through the amplification unit.
摘要翻译：公开了具有改进的线性和噪声系数的混频器电路。所述混频电路包括具有输入端和输出端的放大单元，所述放大单元放大施加到所述输入端的信号，将其输出到所述输出端; 混合单元，具有第一，第二和第三输入端以及第一和第二输出端，所述混合单元将分别施加到第一和第二输入端的信号与提供给第三输入端的信号混合，分别输出混合信号第一和第二输出端子; 连接在所述放大单元的输出端子和所述混频单元的第三输入端子之间的电容器; 以及电流源，用于向混合单元的第三输入端提供特定量的电流，使得流过混合单元的第三输入端的电流量大大地大于流过放大单元的电流量。

2. 发明授权

US6087900A Parallel push-pull amplifier using complementary device 失效
标题翻译：并联推挽放大器采用互补器件
公开(公告)号：US6087900A
公开(公告)日：2000-07-11
申请号：US130328
申请日：1998-08-06
申请人： Kwy-Ro Lee , Bon-Kee Kim
发明人： Kwy-Ro Lee , Bon-Kee Kim
IPC分类号： H03F3/26 , H03F3/30 , H03F3/18
CPC分类号： H03F1/3205 , H03F3/3028
摘要： A parallel push-pull amplifier using a complementary device, which basically operates for a B or AB-level amplification while having a common source configuration, thereby being capable of amplifying the full wave of an input signal without any distortion while obtaining a high gain at a radio frequency. The complementary device consists of an active element for amplifying a half wave of an input signal and a complementary active element for amplifying the other half wave of the input signal. The complementary active element has a duality with respect to the active element. The amplifier also includes bias circuits adapted to set respective operating points of the active and complementary active elements. Where the active and complementary active elements constitute a CMOS device, they are connected together in the form of a push-pull connection using a common source type configuration. Where the active and complementary active elements constitute a BJT, they are connected together using a common emitter configuration. This amplifier takes only the advantages of both the existing -source follower configuration and common source configuration while eliminating the disadvantages of those configurations, thereby achieving a high efficiency and a high linearity. Accordingly, it is possible to provide a power amplifier capable of obtaining a sufficient power gain even at a radio frequency.
摘要翻译：一种使用互补器件的并行推挽放大器，其基本上用于具有公共源配置的B或AB电平放大，从而能够在没有任何失真的情况下放大输入信号的全波，同时获得高增益射频。互补器件由用于放大输入信号的半波的有源元件和用于放大输入信号的另一半波的互补有源元件组成。互补有源元件相对于有源元件具有二重性。放大器还包括适于设置有源和互补有源元件的相应工作点的偏置电路。在有源和互补有源元件构成CMOS器件的情况下，它们使用公共源类型配置以推挽式连接的形式连接在一起。在有源和互补有源元件构成BJT的情况下，它们使用共同的发射极配置连接在一起。该放大器仅具有现有的源跟随器配置和公共源配置的优点，同时消除了这些配置的缺点，从而实现了高效率和高线性度。因此，能够提供能够即使在射频也能获得足够的功率增益的功率放大器。

3. 发明授权

US06919761B2 Wideband variable gain amplifier with high linearity operating in switch mode 有权
标题翻译：宽带可变增益放大器，在开关模式下工作时具有高线性度
公开(公告)号：US06919761B2
公开(公告)日：2005-07-19
申请号：US10724119
申请日：2003-12-01
申请人： Young-Ho Cho , Bo-Eun Kim , Bon-Kee Kim
发明人： Young-Ho Cho , Bo-Eun Kim , Bon-Kee Kim
IPC分类号： H03G3/30 , H03G1/00 , H03F1/14
CPC分类号： H03F3/45197 , H03G1/007
摘要： Disclosed is a wideband variable gain amplifier with high linearity that operates in a switch mode. The variable gain amplifier includes a first amplifier unit, a second amplifier unit and a third amplifier unit. The first amplifier unit includes an amplifier, a wideband-matching element, an attenuator and first switching means. The first amplifier unit supports a high gain mode operation and a low gain mode operation. In the high gain mode, the first switching means is short-circuited and an input signal is amplified with a high gain. It is thus possible to reduce noise characteristics of the entire system by a rear stage. In the low gain mode, the first switching means is opened and the input signal is attenuated by the attenuator without an amplification operation. It is thus possible to reduce a non-linearity occurring by the rear stage of the first amplifier unit. According to another embodiment of the present invention, only the first amplifier unit can be independently used in order to amplify a signal. Furthermore, a variable gain amplifier can be implemented by connecting various combinations of the second amplifier unit and the third amplifier unit at the rear of the first amplifier unit.
摘要翻译：公开了一种在开关模式下工作的具有高线性度的宽带可变增益放大器。可变增益放大器包括第一放大器单元，第二放大器单元和第三放大器单元。第一放大器单元包括放大器，宽带匹配元件，衰减器和第一开关装置。第一放大器单元支持高增益模式操作和低增益模式操作。在高增益模式中，第一开关装置短路，输入信号以高增益放大。因此，可以通过后级来降低整个系统的噪声特性。在低增益模式中，第一开关装置被打开，并且输入信号被衰减器衰减而不进行放大操作。因此，可以减少由第一放大器单元的后级发生的非线性。根据本发明的另一个实施例，只有第一放大器单元可以被独立地使用以放大信号。此外，可变增益放大器可以通过在第一放大器单元的后部连接第二放大器单元和第三放大器单元的各种组合来实现。

4. 发明授权

US07116953B2 Local oscillator using I/Q mismatch compensating circuit through LO path receiver using thereof 有权
标题翻译：使用I / Q失配补偿电路的本地振荡器通过LO路径接收机使用
公开(公告)号：US07116953B2
公开(公告)日：2006-10-03
申请号：US10697988
申请日：2003-10-31
申请人： Bon-Kee Kim , Bo-Eun Kim
发明人： Bon-Kee Kim , Bo-Eun Kim
IPC分类号： H03J7/32 , H04B1/10
CPC分类号： H04B1/30 , H03D3/009 , H04B1/0475 , H04L2027/0016 , H04L2027/0024
摘要： A local oscillator provides an in-phase local oscillating signal and quadrature-phase signal to first and second mixers outputting an input signal with a mixed in-phase local oscillating signal and quadrature-phase local oscillating signal, respectively. The oscillator comprises a local oscillator having first and second delay cells and outputting said in-phase local oscillating signal and said quadrature-phase local oscillating signal; and a correction circuit for controlling phase matching characteristics, said correction circuit setting bias current flowing in said first and second delay cells of said local oscillator as being to be different. In another embodiment, the phase matching characteristic is controlled by setting the bias voltage applied to the first and second delay cells as being to be different, by setting the width of the active device included in the first and second delay cells dells as being to be different, or by setting impedance of passive device to be different.
摘要翻译：本地振荡器向第一和第二混频器提供同相本地振荡信号和正交相位信号，分别输出具有混合同相本地振荡信号和正交相位本地振荡信号的输入信号。所述振荡器包括具有第一和第二延迟单元的本地振荡器，并输出所述同相本地振荡信号和所述正交相位本地振荡信号; 以及用于控制相位匹配特性的校正电路，所述校正电路将在所述本地振荡器的所述第一和第二延迟单元中流动的偏置电流设置为不同。在另一个实施例中，通过将施加到第一和第二延迟单元的偏置电压设置为不同来控制相位匹配特性，通过将包括在第一和第二延迟单元中的有源器件的宽度设定为或者通过将被动设备的阻抗设置为不同。

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