| 摘要 |
A mixer according to the present invention includes an MLO switching part which has at least three odd numbers for branching the signal of an input terminal and has an MLO switch for inputting an MLO signal; and an LO switching part which is connected in parallel to the output side of each MLO switch of the MLO switching part, has a pair of LO switches which has the same number as the MLO switch, and has the output side of the LO switch connected to positive and negative intermediate frequency output sides. When the LO signal is inputted to a pair of LO switches which has the same number as the MLO switch, the LO switches are connected to the positive and negative intermediate frequency output sides in order to allow the output side of the LO switches to alternately output an output signal to the positive and negative part of the intermediate frequency output sides. According to the present invention, because an LO signal with lower frequency is required, high linearity can be realized by using a low flicker noise and a MLO high-crossing buffer. It can be applied to a wideband wireless communication system by using a signal generator for automatically aligning signals. Therefore, it can be widely applied to any kind of wireless communication system. |
