| 摘要 |
The present invention according to an embodiment of the present invention relates to a frequency mixer, which minimizes a leakage current of LO signals generated in local oscillators at a receiver for communications system which uses a frequency band of 70 GHz or higher such as band E. The embodiment of the present invention includes: an oscillation unit which outputs LO signals; a first converter which converts inputted IF signals to different first and second IF signals; a first mixer which outputs the first IF signals, first RF signals mixed with the LO signals, and first leakage signals; a second mixer which outputs the second IF signals, the second RF signals mixed with the LO signals, and second leakage signals; and a second converter which mixes and attenuates the first and the second leakage signals and outputs RF signals mixed with the first and the second RF signals. |
