公开(公告)号：US20110148478A1

公开(公告)日：2011-06-23

申请号：US12819144

申请日：2010-06-18

申请人： Yun-mo KANG ,  Tae-yeoul YUN ,  Hee-woo AN ,  Chang Sun KIM ,  Yea Chul ROH ,  Seong Hoon CHOI

发明人： Yun-mo KANG ,  Tae-yeoul YUN ,  Hee-woo AN ,  Chang Sun KIM ,  Yea Chul ROH ,  Seong Hoon CHOI

IPC分类号： H03B28/00

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0084

摘要： Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage. The bias stage is connected between the transconductance stage and a ground terminal, and has the switched biasing technique for allowing not only the stable bias current but also lowering the flicker noise.

摘要翻译： 提供了一种变频混频器。 变频混频器包括跨导级，开关级，负载级，电流泄放电路和偏置级。 跨导级接收RF信号，并且输出与RF信号的电压相对应的电流。 开关级响应于本地振荡信号切换从跨导级输出的电流，以将RF信号频率转换成中频（IF）信号。 负载级连接在开关级和电源电压端子之间。 电流放电电路与开关级并联连接，特别是体现了跨导级逆变器结构，不仅具有电流出流效应，而且具有电流再利用效应，还有一个谐振电感，用于降低跨导间节点寄生电容产生的噪声 舞台和切换阶段。 偏置级连接在跨导级与接地端子之间，并且具有开关偏置技术，不仅允许稳定的偏置电流，还允许降低闪烁噪声。