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21. 发明授权

US06411801B1 Double balanced active mixer 有权
标题翻译：双平衡有源混频器
公开(公告)号：US06411801B1
公开(公告)日：2002-06-25
申请号：US09399832
申请日：1999-09-21
申请人： Min-Gun Kim , Sung-Won Kang , Eung-Gie Oh , Jae-Jin Lee
发明人： Min-Gun Kim , Sung-Won Kang , Eung-Gie Oh , Jae-Jin Lee
IPC分类号： H04B128
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1491 , H03D2200/0084
摘要： A double balanced active mixer is used for compensating an asymmetric characteristic of complementary radio frequency signals, to thereby improve linearity of the double balanced active mixer. The double balanced active mixer includes an input transistor part for amplifying first and second radio frequency signals having complementary phase each other which are inputted from external circuit and for transferring the amplified first and second radio frequency signals and an Output transistor part for outputting first and second intermediate frequency signals which are complementary each other by switching the amplified first and second radio frequency signals.
摘要翻译：双平衡有源混频器用于补偿互补射频信号的不对称特性，从而提高双平衡有源混频器的线性度。双平衡有源混频器包括：输入晶体管部分，用于放大从外部电路输入的互补相位的第一和第二射频信号，以及用于传送放大的第一和第二射频信号;以及输出晶体管部分，用于输出第一和第二通过切换放大的第一和第二射频信号彼此互补的中频信号。

22. 发明授权

US06300845B1 Low-voltage, current-folded signal modulators and methods 有权
标题翻译：低电压，电流折叠信号调制器和方法
公开(公告)号：US06300845B1
公开(公告)日：2001-10-09
申请号：US09544837
申请日：2000-04-06
申请人： Min Z. Zou
发明人： Min Z. Zou
IPC分类号： H04B128
CPC分类号： H03C1/545
摘要： A low voltage, current-folded signal modulator that reduces distortion in the output signal is provided. The signal modulator has a differential amplifier that receives a first input signal and converts it to a current, a current amplifier that has a low impedance input and provides an amplified current signal, and a differential pair circuit that receives a second input signal and modulates the amplified current signal by the second signal.
摘要翻译：提供了一种降低输出信号失真的低电压，电流折叠信号调制器。信号调制器具有差分放大器，其接收第一输入信号并将其转换为电流，具有低阻抗输入并提供放大电流信号的电流放大器，以及差分对电路，其接收第二输入信号并调制通过第二信号放大电流信号。

23. 发明授权

US06219536B1 Mixer circuit 失效
标题翻译：搅拌机电路
公开(公告)号：US06219536B1
公开(公告)日：2001-04-17
申请号：US09154981
申请日：1998-09-17
申请人： Fumihiro Kamase
发明人： Fumihiro Kamase
IPC分类号： H04B128
CPC分类号： H03D7/12
摘要： To provide an analog mixer circuit operating with low power consumption and without needing any BEF for isolating two input signals, an LO signal and an IF signal are supplied to bases of a first transistor (Q1) and a second transistor (Q2) serially connected. A signal of a node (17) where the emitter of the first transistor (Q1) and the collector of the second transistor (Q2) is amplified nonlinearly by a third transistor (Q3) to be output to an output terminal (11), wherefrom an RF signal is extracted by a HPF (18).
摘要翻译：为了提供以低功耗工作的模拟混频器电路，并且不需要用于隔离两个输入信号的任何BEF，将LO信号和IF信号提供给串联连接的第一晶体管（Q1）和第二晶体管（Q2）的基极。通过第三晶体管（Q3）非线性地放大第一晶体管（Q1）的发射极和第二晶体管（Q2）的集电极的节点（17）的信号，以输出到输出端子（11），由此，通过HPF（18）提取RF信号。

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