
Demystifying Switched-Capacitor Circuits
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part of the RF transceiver (i.e., the receiver) is implemented based on the high-IF
super-heterodyne (or digital high-IF) architecture [11].
In this design, two identical low-pass ∆Σ modulators are used to fulfi ll the
requirements placed by the RF receiver. Table 8.1 summarizes the measurement
results of each ∆Σ modulator.
Chapter Outline
This chapter is organized as follows. Section 8.2 provides an overview of different
RF receiver architectures and a brief description of IF sampling with a pair of
quadrature complex low-pass ∆Σ modulators. Section 8.3 describes the system-level
design of the ∆Σ modu ...