The present invention receives the IQ signal generated by the poly phase filter (Poly Phase Filter), and sums the output signals output from the transistors operated by the common source amplifier and the transistors operated by the common drain amplifier. Therefore, it relates to a circuit for generating a multi-phase LO and a frequency mixer to which it is applied. According to the present invention, a multi-phase signal is generated by summing an output signal output from a transistor operated by a common source amplifier and a transistor operated by a common drain authentication amplifier. In addition, the present invention is to reduce the error of the amplitude generated in the phase signal generated through the ratio of the gain of the common source amplifier having a diode connection load, PVT (Process, Voltage, Temperature) phase shift coupler advantageous for the external environment Can provide. In addition, there is an effect that can provide a low-power, high-accuracy frequency mixer through a multi-phase generation circuit based on the phase shift combiner of the present invention.
展开▼
