CMOS Quadrature IF Frequency Synthesizer/Modulator
Transmitter blocks are classically implemented in GaAs, Bipolar or BiCMOS technologies. The use of CMOS technologies is however much cheaper and it will become especially interesting when the analog front-end is implemented together with the digital part. The first monolithic CMOS RF transmitter has been presented in [Rof98]. The transmitter is part of a complete low-power transceiver operating in the 902-928 MHz ISM frequency band, which is one of the three Industrial, Scientific and Medicine (ISM) frequency bands opened in the USA by the Federal Communications Commission (FCC) for unlicensed spread-spectrum use.
KeywordsPhase Accumulator Spurious Free Dynamic Range Direct Digital Synthesizer Converter Output Linearize TRANSCONDUCTOR
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