IEEE Journal of Solid-State Circuits – Early Access

An IEEE 802.15.4/4z Coherent Quadrature Hybrid Correlation UWB Receiver in 65-nm CMOS

An IEEE 802.15.4/4z Coherent Quadrature Hybrid Correlation UWB Receiver in 65-nm CMOS 150 150

Abstract:

This article presents a coherent ultra-wideband (UWB) receiver architecture based on a quadrature hybrid correlation (QHC) method that significantly reduces the digital-correlation-relevant power in the conventional standard-compliant UWB receiver. The proposed QHC receiver front end employs analog correlation, two-step synchronization with a digital-assisted path, and time-interleaved (TI) sampling methods for …

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A 300- $\mu$ W 2.4-GHz PVT-Insensitive Subthreshold Reference-Based LNA

A 300- $\mu$ W 2.4-GHz PVT-Insensitive Subthreshold Reference-Based LNA 150 150

Abstract:

This article introduces a novel ultra-low-power reference-based low-noise amplifier (LNA) designed to reduce performance variations due to process, voltage, and temperature (PVT) when operating in the subthreshold region. The LNA is embedded within a reference circuit that directly controls the performance of the LNA over PVT variations. By combining the …

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Analysis and Design of a 10.4-ENOB 0.92–5.38- $\mu$ W Event-Driven Level-Crossing ADC With Adaptive Clocking for Time-Sparse Edge Applications

Analysis and Design of a 10.4-ENOB 0.92–5.38- $\mu$ W Event-Driven Level-Crossing ADC With Adaptive Clocking for Time-Sparse Edge Applications 150 150

Abstract:

Level-crossing ADCs (LCADCs) operate on changes in the input signal, resulting in an event-driven power consumption and data output. For signals with time-sparse activity (e.g., neural action potentials, and ECG), such ADCs can offer advantages at the system level through the reduced data rate that decreases the transmission and/…

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A 6 to 12-GHz Fractional- $N$ Frequency Synthesizer With a Digital Technique to Counter Modulus-Dependent Feedback Divider Delays

A 6 to 12-GHz Fractional- $N$ Frequency Synthesizer With a Digital Technique to Counter Modulus-Dependent Feedback Divider Delays 150 150

Abstract:

This article presents a frequency synthesizer for generating quadrature local-oscillator (LO) waveforms covering an octave range of 6 to 12-GHz. It uses two voltage-controlled oscillators (VCO) to cover an octave range from 12 to 24 GHz. The VCOs employ inductor mode switching in addition to conventional capacitor switching to obtain a wide tuning …

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