Abstract:A direct digital-to-RF converter (DRFC) is presented in this work. Due to its digital-in-nature design, the DRFC benefits from technology scaling and can be monolithically integrated into advance digital VLSI systems. A fourthorder single-bit quantizer bandpass digital Σ∆ modulator is used preceding the DRFC, resulting in a high in-band signal-to-noise ratio (SNR). The out-ofband spectrally-shaped quantization noise is attenuated by an embedded semidigital FIR filter (SDFIR). The RF output frequencies are synt… Show more
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