Patent ID: 9172416
Filing Date: 2015-10-27
Classification: H03D,H04B,H04L

Abstract:
1. A tuner comprising: a local oscillator that provides a local oscillator signal having a frequency selected from a plurality of local oscillator frequencies and a continuous-time mixer that mixes an incoming signal with the local oscillator signal so as to translate a lower high frequency spectrum of interest and an upper high frequency spectrum of interest, each spectrum carrying at least a different channel of information from the other spectra, to within a passband, improved wherein the local oscillator frequencies of the plurality are spaced such that any high frequency spectral pair can be tuned from only one local oscillator frequency of the plurality and such that there is substantially no redundant spectral coverage between: an upper and lower high frequency spectrum of interest desired to be recovered frequency-translated to the passband when the local oscillator signal has any first local oscillator frequency of the plurality and an upper and lower high frequency spectrum of interest desired to be recovered frequency-translated to the passband when the local oscillator signal has any local oscillator frequency of the plurality other than the first local oscillator frequency of the plurality, wherein the passband comprises a range of frequencies passed by a low pass filter and excluding DC and the −3 dB frequency responses of the low pass filter is wider than the near-baseband passband.