Design of High-Speed Low-Power ADCs for Wireless Communication
DOI:
https://doi.org/10.15662/IJEETR.2024.0605002Keywords:
High-Speed ADC, Low-Power Design, SAR ADC, Wireless Communication, CMOS Technology, 5G/6G Transceivers, Digital-to-Analog Converter, Power EfficiencyAbstract
With the explosive growth in wireless communication technologies, the demand for high-speed and lowpower analog-to-digital converters (ADCs) has become more critical than ever. These ADCs are the backbone of modern transceivers, enabling accurate digitization of wideband signals while minimizing energy consumption. This paper presents a comprehensive study and design of a high-speed, low-power ADC tailored for next-generation wireless communication systems. Leveraging advanced CMOS technologies and innovative circuit techniques, the proposed ADC achieves a sampling rate exceeding 1 GS/s with power consumption under 10 mW, suitable for applications such as 5G and beyond.
Key innovations include the adoption of Successive Approximation Register (SAR) architecture combined with segmented resistive digital-to-analog converters (DACs) and OTA-based comparators. The design also integrates a lowpower SAR logic controller optimized for fast conversion and minimal energy use. Simulation results demonstrate excellent performance metrics: differential non-linearity (DNL) and integral non-linearity (INL) confined within ±1 LSB, effective number of bits (ENOB) greater than 10 bits, and a signal-to-noise-and-distortion ratio (SNDR) above 60 dB. These results reflect a well-balanced trade-off between speed, accuracy, and power efficiency.
Furthermore, the methodology includes optimization of capacitor arrays, innovative comparator design to reduce kickback noise, and advanced clock management techniques to mitigate power consumption during idle cycles. The proposed ADC design provides a robust foundation for wireless transceivers requiring high data throughput and stringent power budgets. This research contributes a significant step toward enabling ultra-fast, energy-efficient wireless communication hardware, aligning with the aggressive performance demands anticipated in future 6G networks.
References
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