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We present a novel approach for built-in self-testing (BIST) of an RF wireless transmitter. This approach, based on fully-digital hardware and on software algorithms, allows the testing of the transmitter's analog/RF circuitry while providing low-cost replacements for the costly traditional RF tests. The testing approach is structural in nature and substitutes for the commonly employed RF performance...
The digital sigma-delta (SigmaDelta) modulators are used extensively in CMOS wireless SoC designs to achieve high-resolution data conversion while controlling the quantization noise spectrum. This paper presents an implementation of a 90nm CMOS digital band-pass SigmaDelta modulator, running at 900 MHz. The conventional band-pass SigmaDelta structures required to achieve such noise shaping are hardware...
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