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Integration of Passive RF Front-End Components in SoCs by Ahmad Mirzaei, Hooman Darabi

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6 Design of a Superheterodyne Receiver Using M-Phase Filters

6.1 Introduction

In the previous chapters, conventional M-phase filters that can provide a high-Q bandpass filter with a center controlled by clock frequency were introduced. The evolution of the conventional M-phase filter to other useful forms such as high-Q image-rejection filters and high-Q filters with their centers controlled by sum or difference of two clocks was also introduced. In this chapter, we will show how various structures of the previously described M-phase filters have been used in a fully integrated superheterodyne receiver.

Zero-IF or low-IF architectures are two of the dominant architectures for today’s integrated receivers, because these two architectures are ...

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