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71. 发明申请

US20080318544A1 Frequency mixer 审中-公开
标题翻译：混频器
公开(公告)号：US20080318544A1
公开(公告)日：2008-12-25
申请号：US11820698
申请日：2007-06-20
申请人： Rachel Dan Wang , Francis Yeun Cheul Jeung
发明人： Rachel Dan Wang , Francis Yeun Cheul Jeung
IPC分类号： H04B1/26
CPC分类号： H03D7/125
摘要： A mixer for mixing first and second input signals having first and second frequencies respectively. A voltage-to-current converter is coupled with an input for converting a first input signal into a current signal. A multiplier circuit is coupled with the voltage-to-current converter for multiplying the current signal with a second input signal to form an output signal at an output. A matching circuit is provided that couples a component of the current signal back to the input. The matching circuit can comprise a feedback resistor for feeding a part of the current signal back to the input. The second input signal is received at a second input coupled to a second voltage-to-current converter for converting a second input signal into a second current signal. In one embodiment of the mixer the second input is a local oscillator and the current signal is multiplied with a local oscillator signal to form an output signal at the output.
摘要翻译：一种用于混合具有第一和第二频率的第一和第二输入信号的混频器。电压 - 电流转换器与用于将第一输入信号转换成电流信号的输入相耦合。乘法器电路与电压 - 电流转换器耦合，用于将电流信号与第二输入信号相乘，以在输出端形成输出信号。提供了将电流信号的分量耦合回输入的匹配电路。匹配电路可以包括用于将一部分电流信号反馈到输入端的反馈电阻器。第二输入信号在耦合到第二电压 - 电流转换器的第二输入处被接收，用于将第二输入信号转换成第二电流信号。在混频器的一个实施例中，第二输入是本地振荡器，并且电流信号与本地振荡器信号相乘以在输出端形成输出信号。

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