Patent ID: 7925238

Claim:
An apparatus for tuning any channel of interest from a channelized spectrum having a predetermined channel spacing, the apparatus comprising: (a) a local oscillator configured to generate a local oscillator signal frequency either above or below the frequency of the channel of interest; (b) a first mixer and a second mixer, each having an input coupled to the local oscillator and a radio frequency antenna configured to receive the channel of interest, the first and the second mixer configured to frequency translate the channel of interest; (c) a filtering block having two inputs, the inputs being respectively coupled to the first and second mixer outputs and further wherein one of the inputs is in approximate phase quadrature with a second input, the filtering block configured to filter the frequency translated channel of interest; and, (d) a selector structured to dynamically select either a frequency translated upper high frequency spectrum of interest or a frequency translated lower high frequency spectrum of interest for demodulation; (e) wherein the frequency translated channel of interest is within a near-baseband passband spaced from DC by at least about 20 kHz.