| 摘要 |
<p>A low noise mixer comprises a first mixer core configured to receive an input signal, and a first local oscillator signal, wherein the first local oscillator signal is at a frequency that is equal to the frequency of the RF output signal, the first mixer core configured to switch the input signal to at least one secondary mixer core at a frequency that coincides with the frequency of the first local oscillator signal, the at least one secondary mixer core configured to receive the switched input signal and a second local oscillator signal, where the second local oscillator signal is at a frequency that is normally twice the frequency of the RF output signal, and wherein switching the input signal at the frequency of the first local oscillator signal substantially eliminates flicker noise associated with the up-conversion process.</p> |
