Chapter 8

Toward high-resolution RFDAC

The system design perspective*

Abstract

With the idea all-digital orthogonal I/Q combination verified, the next logical step is to add necessary bits to improve the resolution of our RFDAC. This chapter discusses the required resolution and sampling rate from a system perspective.

Keywords

Class-E power amplifier (PA); Quantization noise; Resolution; Dynamic range; Vector modulator

The all-digital orthogonal I/Q modulator concept of Chapter 7 [116118] substantiates that the direct orthogonal summation of the in-phase and quadrature digital RF vectors can generate the composite IQ RF vectors. According to Chapter 7, a 2 × 3-bit static ...

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