| 主权项 |
1. A down-converter for receiving a multiband radio frequency signal and a local oscillator signal generated by a single oscillator, the down-converter comprising:
a frequency divider configured to divide the local oscillator signal and provide a plurality of different divided local oscillator signals; and two heterodyne receive chains configured to receive the same plurality of different divided local oscillator signals derived from the single oscillator for down-converting the multiband radio frequency signal, wherein each heterodyne receive chain is configured to receive the multiband radio frequency signal with different polarizations, each heterodyne receive chain comprising:
a first stage mixer configured to mix the multiband radio frequency signal and a first divided local oscillator signal of the plurality of different divided local oscillator signals in order to generate a first intermediate frequency signal, anda plurality of second stage mixers, each second stage mixer configured to mix the first intermediate signal and a second divided local oscillator signal of the plurality of different divided local oscillator signals in order to generate second intermediate frequency signals that each represent a different band from the multiband radio frequency signal; where the frequency divider is configured to provide a different divided local oscillator signal to each of the second stage mixers, and where each of the different divided local oscillator signals provided to the second stage mixers are of a different frequency. |
