Simulation of simple delta-sigma modulator for driving class C RF amplifiers

Delta-sigma modulators offer the potential for high linearity in a wide variety of radio frequency applications. In addition, the binary pulse output of the modulator motivates application as a driver for class C and class D amplifiers. Although class D amplifiers offer potential for higher power efficiency, class C amplifiers offer nearly the same performance with potential for less complexity. In addition, most radio signals of interest in these amplifier applications are bandpass. Therefore, the design and simulation of bandpass delta-sigma modulators are considered for application in driving class C amplifiers.