Filter partitioning optimum strategy in homodyne multi-standard radio receivers

Overcoming the challenges of designing CMOS Software Defined Radio Receivers front-ends embedding analog signal conditioning

“…3 sketches the liaisons between the individual tradesoffs shaping the SDRR front-end design. The most important consequences of solving the trade-offs are: (1) the optimal filter partitioning, as the solution for the trade-off between the SDRR area and power consumption, [11], and (2) the smart gain partitioning, as a solution for the trade-off between the SDRR noise and linearity performance, [12]. First, the most important issue due to blockers and interferers is the risk of the receiver output clipping.…”

“…In [11], the SDRR generic blockers diagram is defined and introduced, as a very efficient tool in evaluating, in a standard independent approach, the filter partitioning for channel selection in multi-standard radio receivers. The diagram consists of all blockers and interferers present at receiver's antenna input, under which influence the receiver must be able, still, to successfully demodulate the wanted signal.…”

“…The diagram consists of all blockers and interferers present at receiver's antenna input, under which influence the receiver must be able, still, to successfully demodulate the wanted signal. By using this tool, the designer is enabled to find the optimal channel selection strategy (e. g, a LPF order larger than 4 brings no further benefit for the targeted standards channel selection, [11]). Further on, thanks to an in-depth analysis of the envisaged standard requirements, the receiver linearity performance (i. e., its IIP3, IIP3 RX ) is evaluated, [10].…”