發明
美國
17/528,307
US 11,533,021 B1
Down-conversion mixer
國立暨南國際大學
2022/12/20
A down-conversion mixer includes a converting-and-mixing circuit and a load circuit. The converting-and-mixing circuit performs voltage to current conversion and mixing with a differential oscillatory voltage signal pair upon a differential input voltage signal pair to generate a differential mixed current signal pair. The load circuit includes two transistors each having a transconductance that varies according to a control voltage, two resistors each decreasing a threshold voltage of a respectively one of the transistors, and a resistor-inductor circuit cooperating with the transistors to convert the differential mixed current signal pair into a differential mixed voltage signal pair. (一種降頻混頻器,包含:一轉導混頻模組,接收一差動射頻電壓信號及一差動振盪電壓 信號,並將該差動射頻電壓信號與該差動振盪電壓信號進行轉導與混和,以產生一包括 一第一混合電流信號及一第二混合電流信號的差動混合電流信號;及一負載模組,電連 接該轉導混頻模組以接收該差動混合電流信號,並將該差動混合電流信號轉換為一差動 中頻電壓信號。)
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