Concept for a 12-bit Digital Bandpass Delta-Sigma Modulator for Power Amplifier Applications
نویسندگان
چکیده
A digital bandpass delta-sigma modulator (BPDSM) with an SNR of 74 dB at a bandwidth of 20 MHz is proposed. A time-interleaved structure and optimized sparse-tree adders ensure a high sampling frequency and thus a high input signal frequency range. The concept is based on static CMOS gates using a commercial 65 nm process. Simulations indicate a sampling frequency up to 6.6 GHz and a signal frequency of up to 1.67 GHz.
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